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Unable to use JConsole with Tomcat running as windows service

- by Kees de Kooter

I am running tomcat 6.0.18 as a windows service. In the service applet the jvm is configured default, i.e. it is using jvm.dll of the JRE. I am trying to monitor this application with JConsole but cannot connect to it locally. I added the parameter -Dcom.sun.management.jmxremote (which works when starting tomcat with the start.bat script). But the jvm does not seem to pick up the parameter.

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CPU and profiling not supported for remote jvisualvm session

- by yawn

When monitoring a remote app (using jstatd) I can neither profile nor monitor cpu consumption. Heap monitoring (provided I do not use G1) works. jvisualvm provides the message "Not supported for this JVM." in the CPU graph window. Is there anything missing in my setup? The google showed up next to no results. The local environment (Mac OS X 10.6): java version "1.6.0_15" Java(TM) SE Runtime Environment (build 1.6.0_15-b03-219) Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02-90, mixed mode) The remote environment (Linux version 2.6.16.27-0.9-smp (gcc version 4.1.0 (SUSE Linux))): java version "1.6.0_16" Java(TM) SE Runtime Environment (build 1.6.0_16-b01) Java HotSpot(TM) 64-Bit Server VM (build 14.2-b01, mixed mode) Local monitoring works as advertised.

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How to access Memory pool mbeans

- by nandula-shankar

Hi, I want to access MemoryPool Mbeans through a java program so that I can retrieve the Eden Space, Perm Gen space, CodeCahe, Survior Space statistics during a period of time. How to do this? I tried java.lang:type=MemoryPool,name=Eden Space I wan not lucky Thanks, Shankar

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Converting standard mbeans to dynamic mbeans / Code generation

- by saugata

I have a bunch of standard MBeans which I need to convert to dynamic MBeans, (main purpose is to add user friendly descriptions to attributes, operations and operation parameters). I was wondering if there is any tool which can make my job easier by generating skeleton code for dynamic MBeans from the existing standard MBeans.

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How to Sum calulated fields

- by Nazero Jerry

I‘d like to ask I question that here that I think would be easy to some people. Ok I have query that return records of two related tables. (One to many) In this query I have about 3 to 4 calculated fields that are based on the fields from the 2 tables. Now I want to have a group by clause for names and sum clause to sum the calculated fields but it ends up in error message saying: “You tried to execute a query that is not part of aggregate function” So I decided to just run the query without the totals *(ie no group by , sum etc,,,) : And then I created another query that totals my previous query. ( i.e. using group by clause for names and sum for calculated fields… no calculation here) This is fine ( I use to do this) but I don’t like having two queries just to get summary total. Is their any other way of doing this in the design view and create only one query?. I would very much appreciate. Thankyou: JM

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Mbean registered but not found in mbean Server

- by Prisco

I have a problem about the mbeans. I have created a simple mbean and I have registered it on the default mBeanServer that is run (Via eclipse or java -jar mbean.jar) and in the same process if I try to fouund the mbean registered with a simple query: for (ObjectInstance instance : mbs.queryMBeans(ObjectNameMbean, null)) { System.out.println(instance.toString()); } the query retuerns my mbean, but if I start another process and try to search this mbean registered the mbeas is not found! why? The approch is : (Process that is running) public static void main(String[] args) throws Exception { MBeanServer mbeanServer =ManagementFactory.getPlatformMBeanServer(); ObjectName objectName = new ObjectName(ObjectNameMbean); Simple simple = new Simple (1, 0); mbeanServer.registerMBean(simple, objectName); while (true) { wait (Is this necessary?) } } So this is the first process that is running (that has the only pourpose to registry the mbean, because there is another process that want to read these informations. So I start another process to search this mbean but nothing. I 'm not using jboss but the local Java virtual Machine but my scope is to deploy this simple application in one ejb (autostart) and another ejb will read all informations. All suggestions are really apprecciated. This example should be more useful : Object Hello: public class Hello implements HelloMBean { public void sayHello() { System.out.println("hello, world"); } public int add(int x, int y) { return x + y; } public String getName() { return this.name; } public int getCacheSize() { return this.cacheSize; } public synchronized void setCacheSize(int size) { this.cacheSize = size; System.out.println("Cache size now " + this.cacheSize); } private final String name = "Reginald"; private int cacheSize = DEFAULT_CACHE_SIZE; private static final int DEFAULT_CACHE_SIZE = 200; } Interface HelloBean (implemented by Hello) public interface HelloMBean { public void sayHello(); public int add(int x, int y); public String getName(); public int getCacheSize(); public void setCacheSize(int size); } Simple Main import java.lang.management.ManagementFactory; import java.util.logging.Logger; import javax.management.MBeanServer; import javax.management.ObjectName; public class Main { static Logger aLog = Logger.getLogger("MBeanTest"); public static void main(String[] args) { try{ MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); ObjectName name = new ObjectName("ApplicationDomain:type=Hello"); Hello mbean = new Hello(); mbs.registerMBean(mbean, name); // System.out.println(mbs.getAttribute(name, "Name")); aLog.info("Waiting forever..."); Thread.sleep(Long.MAX_VALUE); } catch(Exception x){ x.printStackTrace(); aLog.info("exception"); } } } So now I have exported this project as jar file and run it as "java -jar helloBean.jar" and by eclipse I have modified the main class to read informations of this read (Example "Name" attribute) by using the same objectname used to registry it . Main to read : public static void main(String[] args) { try{ MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); ObjectName name = new ObjectName("ApplicationDomain:type=Hello"); System.out.println(mbs.getAttribute(name, "Name")); } catch(Exception x){ x.printStackTrace(); aLog.info("exception"); } } But nothing, the bean is not found.

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links for 2010-05-17

- by Bob Rhubart

Government 2.0 Expo 2010 - May 25-27, 2010 Washington DC WIKI page covering Oracle's sponsorship of Government 2.0 Expo 2010 in Washington, DC USA. (tags: architect enterprise2.0 oracle otn) @myfear: DOAG 2010 Conference and Exhibition CfP still running "In more than 300 speakers slots the DOAG 2010 Conference, which takes place November 16th-18th, 2010 in Nuremberg, provides current information on the successful use of the Oracle products as well as practical tips and tricks and exchange of experience. Stay up to date with informations and follow @doagkonferenz on twitter." -- Oracle ACE Director Marcus Eisele (tags: oracle otn oracleace DOAG) @oracle_ace: MySQL Track at ODTUG Kaleidoscope "It looks like MySQL will be making a splash in DC this year at ODTUG Kaleidoscope. The conference organizers have announced a new MySQL track. Is this a good thing? MySQL is not really an Oracle tool, per se. It is, however, an Oracle database. As a database geek, and as an Oracle ACE Director, I like it." -- Oracle ACE Director Lewis Cunningham (tags: oracle otn oracleace mysql ODTUG) @ORACLENERD: Exadata Quotes Oracle ACE Chet "ORACLENERD"Justice leverages Hollywood to share his thoughts on Oracle Exadata. (tags: oracle otn oracleace exadata) Anthony Shorten: Accessing JMX for Oracle WebLogic 11g Anthony Shortens illustrates one way to allow "a console like jconsole to remotely monitor and manage Oracle WebLogic using the JMX Mbeans." (tags: oracle otn weblogic java ejb jmx) The Aquarium: Oracle Blogs, Tweeters, Feeds and Planets The Aquarium shares "some useful links to Oracle-related content that I recently discovered, as seen from the perspective of a 'Sun classic' Oracle employee." (tags: oracle sun blogs community) Anthony Shorten: JMX Based Monitoring - Part Two - JVM Monitoring The second article in Anthony Shorten's series focusing on the JMX based monitoring capabilities possible with the Oracle Utilities Application Framework. (tags: oracle otn virtualization jvm jmx java)

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Look Inside WebLogic Server Embedded LDAP with an LDAP Explorer

- by james.bayer

Today a question came up on our internal WebLogic Server mailing lists about an issue deleting a Group from WebLogic Server. The group had a special character in the name. The WLS console refused to delete the group with the message a java.net.MalformedURLException and another message saying “Errors must be corrected before proceeding.” as shown below. The group aa:bb is the one with the issue. Click to enlarge. WebLogic Server includes an embedded LDAP server that can be used for managing users and groups for “reasonably small environments (10,000 or fewer users)”. For organizations scaling larger or using more high-end features, I recommend looking at one of Oracle’s very popular enterprise directory services products like Oracle Internet Directory or Oracle Directory Server Enterprise Edition. You can configure multiple authenicators in WebLogic Server so that you can use multiple directories at the same time. I am not sure WebLogic Server supports special characters in group names for the Embedded LDAP server, but in this case both the console and WLST reported the same issue deleting the group with the special character in the name. Here’s the WLST output: wls:/hotspot_domain/serverConfig/SecurityConfiguration/hotspot_domain/Realms/myrealm/AuthenticationProviders/DefaultAuthenticator> cmo.removeGroup('aa:bb') Traceback (innermost last): File "<console>", line 1, in ? weblogic.security.providers.authentication.LDAPAtnDelegateException: [Security:090296]invalid URL ldap:///ou=people,ou=myrealm,dc=hotspot_domain??sub?(&(objectclass=person)(wlsMemberOf=cn=aa:bb,ou=groups,ou=myrealm,dc=hotspot_domain)) at weblogic.security.providers.authentication.LDAPAtnGroupMembersNameList.advance(LDAPAtnGroupMembersNameList.java:254) at weblogic.security.providers.authentication.LDAPAtnGroupMembersNameList.<init>(LDAPAtnGroupMembersNameList.java:119) at weblogic.security.providers.authentication.LDAPAtnDelegate.listGroupMembers(LDAPAtnDelegate.java:1392) at weblogic.security.providers.authentication.LDAPAtnDelegate.removeGroup(LDAPAtnDelegate.java:1989) at weblogic.security.providers.authentication.DefaultAuthenticatorImpl.removeGroup(DefaultAuthenticatorImpl.java:242) at weblogic.security.providers.authentication.DefaultAuthenticatorMBeanImpl.removeGroup(DefaultAuthenticatorMBeanImpl.java:407) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at weblogic.management.jmx.modelmbean.WLSModelMBean.invoke(WLSModelMBean.java:437) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase$16.run(WLSMBeanServerInterceptorBase.java:449) at java.security.AccessController.doPrivileged(Native Method) at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase.invoke(WLSMBeanServerInterceptorBase.java:447) at weblogic.management.mbeanservers.internal.JMXContextInterceptor.invoke(JMXContextInterceptor.java:263) at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase$16.run(WLSMBeanServerInterceptorBase.java:449) at java.security.AccessController.doPrivileged(Native Method) at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase.invoke(WLSMBeanServerInterceptorBase.java:447) at weblogic.management.mbeanservers.internal.SecurityInterceptor.invoke(SecurityInterceptor.java:444) at weblogic.management.jmx.mbeanserver.WLSMBeanServer.invoke(WLSMBeanServer.java:323) at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder$11$1.run(JMXConnectorSubjectForwarder.java:663) at java.security.AccessController.doPrivileged(Native Method) at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder$11.run(JMXConnectorSubjectForwarder.java:661) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363) at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder.invoke(JMXConnectorSubjectForwarder.java:654) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1427) at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265) at java.security.AccessController.doPrivileged(Native Method) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1367) at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:788) at javax.management.remote.rmi.RMIConnectionImpl_WLSkel.invoke(Unknown Source) at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667) at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146) at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518) at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207) at weblogic.work.ExecuteThread.run(ExecuteThread.java:176) Caused by: java.net.MalformedURLException at netscape.ldap.LDAPUrl.readNextConstruct(LDAPUrl.java:651) at netscape.ldap.LDAPUrl.parseUrl(LDAPUrl.java:277) at netscape.ldap.LDAPUrl.<init>(LDAPUrl.java:114) at weblogic.security.providers.authentication.LDAPAtnGroupMembersNameList.advance(LDAPAtnGroupMembersNameList.java:224) ... 41 more It’s fairly clear that in order to work that the : character needs to be URL encoded to %3A or similar. But all is not lost, there is another way. You can configure an LDAP Explorer like JXplorer to WebLogic Server Embedded LDAP and browse/edit the entries. Follow the instructions here, being sure to change the authentication credentials to the Embedded LDAP server to some value you know, as by default they are some unknown value. You’ll need to reboot the WebLogic Server Admin Server after making this change. Now configure JXplorer to connect as described in the documentation. I’ve circled the important inputs. In this example, my domain name is “hotspot_domain” which listens on the localhost listen address and port 7001. The cn=Admin user name is a constant identifier for the Administrator of the embedded LDAP and that does not change, but you need to know what it is so you can enter it into the tool you use. Once you connect successfully, you can explore the entries and in this case delete the group that is no longer desired.

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War deployment error related to classloading

- by user563564

hello when i am deploying my war file and run it it will give error like org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader Jan 6, 2011 3:16:04 PM org.apache.catalina.startup.HostConfig deployDescriptor INFO: Deploying configuration descriptor servlet.xml Jan 6, 2011 3:16:04 PM org.apache.catalina.core.StandardContext preDeregister SEVERE: error stopping LifecycleException: Pipeline has not been started at org.apache.catalina.core.StandardPipeline.stop(StandardPipeline.java:257) at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4629) at org.apache.catalina.core.StandardContext.preDeregister(StandardContext.java:5370) at org.apache.tomcat.util.modeler.BaseModelMBean.preDeregister(BaseModelMBean.java:1130) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.preDeregisterInvoke(DefaultMBeanServerInterceptor.java:1048) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.exclusiveUnregisterMBean(DefaultMBeanServerInterceptor.java:421) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:403) at com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:506) at org.apache.tomcat.util.modeler.Registry.unregisterComponent(Registry.java:575) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:619) Jan 6, 2011 3:16:05 PM org.apache.catalina.loader.WebappLoader start SEVERE: LifecycleException java.lang.ClassNotFoundException: org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at org.apache.catalina.loader.WebappLoader.createClassLoader(WebappLoader.java:773) at org.apache.catalina.loader.WebappLoader.start(WebappLoader.java:638) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4341) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:619) Jan 6, 2011 3:16:05 PM org.apache.catalina.core.ContainerBase addChildInternal SEVERE: ContainerBase.addChild: start: LifecycleException: start: : java.lang.ClassNotFoundException: org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader at org.apache.catalina.loader.WebappLoader.start(WebappLoader.java:679) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4341) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:619) Jan 6, 2011 3:16:05 PM org.apache.catalina.startup.HostConfig deployDescriptor SEVERE: Error deploying configuration descriptor servlet.xml java.lang.IllegalStateException: ContainerBase.addChild: start: LifecycleException: start: : java.lang.ClassNotFoundException: org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:795) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:619) context.xml file -- <?xml version="1.0" encoding="UTF-8"?> <Context antiJARLocking="true" path="servlet"> <Loader loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/> </Context> FAIL - Failed to deploy application at context path /servlet so how can i resolve it

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JBoss Client-Cert Authentication: Hot to setup UsersRolesLoginModule in login-config.xml

- by sixtyfootersdude

I am looking that chapter 8 of the RedHat, JBoss documentation. I am trying to setup Certificate Authentication as described on this page . On the page it says that the login-config file should have this in it: <application-policy name="jmx-console"> <authentication> <login-module code="org.jboss.security.auth.spi.BaseCertLoginModule" flag="required"> <module-option name="password-stacking">useFirstPass</module-option> <module-option name="securityDomain">java:/jaas/jmx-console</module-option> </login-module> <login-module code="org.jboss.security.auth.spi.UsersRolesLoginModule" flag="required"> <module-option name="password-stacking">useFirstPass</module-option> <module-option name="usersProperties">jmx-console-users.properties</module-option> <module-option name="rolesProperties">jmx-console-roles.properties</module-option> </login-module> </authentication> </application-policy> I think that the BaseCertLoginModule chekcs the clients server and the UsersRolesloginModule assigns the client to role (using the file jmx-console-roles.properties). However I am completely bewildered as to what should be in this file: jmx-console-users.properties. Normally that file stores user/password pairs (source) but when using client-cert I don't think that there should be passwords in there. Right now I am leaving that file empty but I am getting this exception: [org.jboss.security.auth.spi.UsersRolesLoginModule.initialize:135] Failed to load users/passwords/role files java.io.IOException: No properties file: users.properties or defaults: defaultUsers.properties found ... What should be in that file? Thanks.

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WLS MBeans

- by Jani Rautiainen

WLS provides a set of Managed Beans (MBeans) to configure, monitor and manage WLS resources. We can use the WLS MBeans to automate some of the tasks related to the configuration and maintenance of the WLS instance. The MBeans can be accessed a number of ways; using various UIs and programmatically using Java or WLST Python scripts.For customization development we can use the features to e.g. manage the deployed customization in MDS, control logging levels, automate deployment of dependent libraries etc. This article is an introduction on how to access and use the WLS MBeans. The goal is to illustrate the various access methods in a single article; the details of the features are left to the linked documentation.This article covers Windows based environment, steps for Linux would be similar however there would be some differences e.g. on how the file paths are defined. MBeansThe WLS MBeans can be categorized to runtime and configuration MBeans.The Runtime MBeans can be used to access the runtime information about the server and its resources. The data from runtime beans is only available while the server is running. The runtime beans can be used to e.g. check the state of the server or deployment.The Configuration MBeans contain information about the configuration of servers and resources. The configuration of the domain is stored in the config.xml file and the configuration MBeans can be used to access and modify the configuration data. For more information on the WLS MBeans refer to: Understanding WebLogic Server MBeans WLS MBean reference Java Management Extensions (JMX)We can use JMX APIs to access the WLS MBeans. This allows us to create Java programs to configure, monitor, and manage WLS resources. In order to use the WLS MBeans we need to add the following library into the class-path: WL_HOME\lib\wljmxclient.jar Connecting to a WLS MBean server The WLS MBeans are contained in a Mbean server, depending on the requirement we can connect to (MBean Server / JNDI Name): Domain Runtime MBean Server weblogic.management.mbeanservers.domainruntime Runtime MBean Server weblogic.management.mbeanservers.runtime Edit MBean Server weblogic.management.mbeanservers.edit To connect to the WLS MBean server first we need to create a map containing the credentials; Hashtable<String, String> param = new Hashtable<String, String>(); param.put(Context.SECURITY_PRINCIPAL, "weblogic"); param.put(Context.SECURITY_CREDENTIALS, "weblogic1"); param.put(JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES, "weblogic.management.remote"); These define the user, password and package containing the protocol. Next we create the connection: JMXServiceURL serviceURL = new JMXServiceURL("t3","127.0.0.1",7101, "/jndi/weblogic.management.mbeanservers.domainruntime"); JMXConnector connector = JMXConnectorFactory.connect(serviceURL, param); MBeanServerConnection connection = connector.getMBeanServerConnection(); With the connection we can now access the MBeans for the WLS instance. For a complete example see Appendix A of this post. For more details refer to Accessing WebLogic Server MBeans with JMX Accessing WLS MBeans The WLS MBeans are structured hierarchically; in order to access content we need to know the path to the MBean we are interested in. The MBean is accessed using “MBeanServerConnection. getAttribute” API. WLS provides entry points to the hierarchy allowing us to navigate all the WLS MBeans in the hierarchy (MBean Server / JMX object name): Domain Runtime MBean Server com.bea:Name=DomainRuntimeService,Type=weblogic.management.mbeanservers.domainruntime.DomainRuntimeServiceMBean Runtime MBean Servers com.bea:Name=RuntimeService,Type=weblogic.management.mbeanservers.runtime.RuntimeServiceMBean Edit MBean Server com.bea:Name=EditService,Type=weblogic.management.mbeanservers.edit.EditServiceMBean For example we can access the Domain Runtime MBean using: ObjectName service = new ObjectName( "com.bea:Name=DomainRuntimeService," + "Type=weblogic.management.mbeanservers.domainruntime.DomainRuntimeServiceMBean"); Same syntax works for any “child” WLS MBeans e.g. to find out all application deployments we can: ObjectName domainConfig = (ObjectName)connection.getAttribute(service,"DomainConfiguration"); ObjectName[] appDeployments = (ObjectName[])connection.getAttribute(domainConfig,"AppDeployments"); Alternatively we could access the same MBean using the full syntax: ObjectName domainConfig = new ObjectName("com.bea:Location=DefaultDomain,Name=DefaultDomain,Type=Domain"); ObjectName[] appDeployments = (ObjectName[])connection.getAttribute(domainConfig,"AppDeployments"); For more details refer to Accessing WebLogic Server MBeans with JMX Invoking operations on WLS MBeans The WLS MBean operations can be invoked with MBeanServerConnection. invoke API; in the following example we query the state of “AppsLoggerService” application: ObjectName appRuntimeStateRuntime = new ObjectName("com.bea:Name=AppRuntimeStateRuntime,Type=AppRuntimeStateRuntime"); Object[] parameters = { "AppsLoggerService", "DefaultServer" }; String[] signature = { "java.lang.String", "java.lang.String" }; String result = (String)connection.invoke(appRuntimeStateRuntime,"getCurrentState",parameters, signature); The result returned should be "STATE_ACTIVE" assuming the "AppsLoggerService" application is up and running. WebLogic Scripting Tool (WLST) The WebLogic Scripting Tool (WLST) is a command-line scripting environment that we can access the same WLS MBeans. The tool is located under: $MW_HOME\oracle_common\common\bin\wlst.bat Do note that there are several instances of the wlst script under the $MW_HOME, each of them works, however the commands available vary, so we want to use the one under “oracle_common”. The tool is started in offline mode. In offline mode we can access and manipulate the domain configuration. In online mode we can access the runtime information. We connect to the Administration Server : connect("weblogic","weblogic1", "t3://127.0.0.1:7101") In both online and offline modes we can navigate the WLS MBean using commands like "ls" to print content and "cd" to navigate between objects, for example: All the commands available can be obtained with: help('all') For details of the tool refer to WebLogic Scripting Tool and for the commands available WLST Command and Variable Reference. Also do note that the WLST tool can be invoked from Java code in Embedded Mode. Running Scripts The WLST tool allows us to automate tasks using Python scripts in Script Mode. The script can be manually created or recorded by the WLST tool. Example commands of recording a script: startRecording("c:/temp/recording.py") <commands that we want to record> stopRecording() We can run the script from WLST: execfile("c:/temp/recording.py") We can also run the script from the command line: C:\apps\Oracle\Middleware\oracle_common\common\bin\wlst.cmd c:/temp/recording.py There are various sample scripts are provided with the WLS instance. UI to Access the WLS MBeans There are various UIs through which we can access the WLS MBeans. Oracle Enterprise Manager Fusion Middleware Control Oracle WebLogic Server Administration Console Fusion Middleware Control MBean Browser In the integrated JDeveloper environment only the Oracle WebLogic Server Administration Console is available to us. For more information refer to the documentation, one noteworthy feature in the console is the ability to record WLST scripts based on the navigation. In addition to the UIs above the JConsole included in the JDK can be used to access the WLS MBeans. The JConsole needs to be started with specific parameter to force WLS objects to be used and jar files in the classpath: "C:\apps\Oracle\Middleware\jdk160_24\bin\jconsole" -J-Djava.class.path=C:\apps\Oracle\Middleware\jdk160_24\lib\jconsole.jar;C:\apps\Oracle\Middleware\jdk160_24\lib\tools.jar;C:\apps\Oracle\Middleware\wlserver_10.3\server\lib\wljmxclient.jar -J-Djmx.remote.protocol.provider.pkgs=weblogic.management.remote For more details refer to the Accessing Custom MBeans from JConsole. Summary In this article we have covered various ways we can access and use the WLS MBeans in context of integrated WLS in JDeveloper to be used for Fusion Application customization development. References Developing Custom Management Utilities With JMX for Oracle WebLogic Server Accessing WebLogic Server MBeans with JMX WebLogic Server MBean Reference WebLogic Scripting Tool WLST Command and Variable Reference Appendix A package oracle.apps.test; import java.io.IOException;import java.net.MalformedURLException;import java.util.Hashtable;import javax.management.MBeanServerConnection;import javax.management.MalformedObjectNameException;import javax.management.ObjectName;import javax.management.remote.JMXConnector;import javax.management.remote.JMXConnectorFactory;import javax.management.remote.JMXServiceURL;import javax.naming.Context;/** * This class contains simple examples on how to access WLS MBeans using JMX. */public class BlogExample { /** * Connection to the WLS MBeans */ private MBeanServerConnection connection; /** * Constructor that takes in the connection information for the * domain and obtains the resources from WLS MBeans using JMX. * @param hostName host name to connect to for the WLS server * @param port port to connect to for the WLS server * @param userName user name to connect to for the WLS server * @param password password to connect to for the WLS server */ public BlogExample(String hostName, String port, String userName, String password) { super(); try { initConnection(hostName, port, userName, password); } catch (Exception e) { throw new RuntimeException("Unable to connect to the domain " + hostName + ":" + port); } } /** * Default constructor. * Tries to create connection with default values. Runtime exception will be * thrown if the default values are not used in the local instance. */ public BlogExample() { this("127.0.0.1", "7101", "weblogic", "weblogic1"); } /** * Initializes the JMX connection to the WLS Beans * @param hostName host name to connect to for the WLS server * @param port port to connect to for the WLS server * @param userName user name to connect to for the WLS server * @param password password to connect to for the WLS server * @throws IOException error connecting to the WLS MBeans * @throws MalformedURLException error connecting to the WLS MBeans * @throws MalformedObjectNameException error connecting to the WLS MBeans */ private void initConnection(String hostName, String port, String userName, String password) throws IOException, MalformedURLException, MalformedObjectNameException { String protocol = "t3"; String jndiroot = "/jndi/"; String mserver = "weblogic.management.mbeanservers.domainruntime"; JMXServiceURL serviceURL = new JMXServiceURL(protocol, hostName, Integer.valueOf(port), jndiroot + mserver); Hashtable<String, String> h = new Hashtable<String, String>(); h.put(Context.SECURITY_PRINCIPAL, userName); h.put(Context.SECURITY_CREDENTIALS, password); h.put(JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES, "weblogic.management.remote"); JMXConnector connector = JMXConnectorFactory.connect(serviceURL, h); connection = connector.getMBeanServerConnection(); } /** * Main method used to invoke the logic for testing * @param args arguments passed to the program */ public static void main(String[] args) { BlogExample blogExample = new BlogExample(); blogExample.testEntryPoint(); blogExample.testDirectAccess(); blogExample.testInvokeOperation(); } /** * Example of using an entry point to navigate the WLS MBean hierarchy. */ public void testEntryPoint() { try { System.out.println("testEntryPoint"); ObjectName service = new ObjectName("com.bea:Name=DomainRuntimeService,Type=" +"weblogic.management.mbeanservers.domainruntime.DomainRuntimeServiceMBean"); ObjectName domainConfig = (ObjectName)connection.getAttribute(service, "DomainConfiguration"); ObjectName[] appDeployments = (ObjectName[])connection.getAttribute(domainConfig, "AppDeployments"); for (ObjectName appDeployment : appDeployments) { String resourceIdentifier = (String)connection.getAttribute(appDeployment, "SourcePath"); System.out.println(resourceIdentifier); } } catch (Exception e) { throw new RuntimeException(e); } } /** * Example of accessing WLS MBean directly with a full reference. * This does the same thing as testEntryPoint in slightly difference way. */ public void testDirectAccess() { try { System.out.println("testDirectAccess"); ObjectName appDeployment = new ObjectName("com.bea:Location=DefaultDomain,"+ "Name=AppsLoggerService,Type=AppDeployment"); String resourceIdentifier = (String)connection.getAttribute(appDeployment, "SourcePath"); System.out.println(resourceIdentifier); } catch (Exception e) { throw new RuntimeException(e); } } /** * Example of invoking operation on a WLS MBean. */ public void testInvokeOperation() { try { System.out.println("testInvokeOperation"); ObjectName appRuntimeStateRuntime = new ObjectName("com.bea:Name=AppRuntimeStateRuntime,"+ "Type=AppRuntimeStateRuntime"); String identifier = "AppsLoggerService"; String serverName = "DefaultServer"; Object[] parameters = { identifier, serverName }; String[] signature = { "java.lang.String", "java.lang.String" }; String result = (String)connection.invoke(appRuntimeStateRuntime, "getCurrentState", parameters, signature); System.out.println("State of " + identifier + " = " + result); } catch (Exception e) { throw new RuntimeException(e); } }}

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??????WLST

- by Masa Sasaki

WebLogic Server?????????????WebLogic Server????????7?23?????????38?WebLogic Server???@??????????????WLST?(?????? ??????????? ?? ??)??????????????WLST(WebLogic Scripting Tool)?WebLogic Server???????????????????????????????????WLST?????TIPS??????????????????????WLST????????????????????????????????????????????·????????????(?????? Fusion Middleware?????? ??? ??) WLST?? WebLogic Scripting Tool???WebLogic ??????????????????????????·?????????? WebLogic Server 9.x???????????????????Java??????·?????????Jython??????????? WLST???????????????????????????Jython??????WebLogic Server??????????????(????)????????WLST?Jython??????????????????????????? WLST???????? WLST?????????????????????????WebLogic????????????????????????????????·????????????????·??????(???????????)???????? (WLST????????????????????????????????????????????) WLST??????Java Management Extensions (JMX)???????????????JMX??????????????????????????????????Bean (MBean)??????????????????????? WLST???????? WLST??????WebLogic Server?????????????????·??????????????????????????????????????????????????????????????????????????????????????????????????????????WLST??????WebLogic Server??????????JMX????????????????????????????????WebLogic???????????????WLST????????????????????? ???????????·???????????? ????? ???????????·???·??????WLST?????????????????????????????????????????????????????????????????????????????????????????????????????WLST??????????????????????????????????????????? ?????·??? ???.py????????·????(?????filename.py)?WLST?????????????????????????????WLST???????????????????????????·?????Jython??????????????????????? ?????? ?????????Java?????WLST??????????????????????WLST????????????????????????????????·????????WLST???????????????????????????? WLST?MBean WebLogic Server?????(?????????)?JMX(Java Management Extension)?????????????JMX???????????????Bean(MBean)?????? MBean?????? MBean????????????????????????????????MBean???????????????????????????????????????????????????????????????????? WLST????????? ? ?????? ? ???????????(MBean???)??? ? ?????????? - ??????? - ?????????? - ?? - ?????? WLST???? ??·??·?????WLST???????????????????????????????????????????WLST??????????????? TIPS?MBean???? TIPS?????????????????WLST????????????????????????????????????????????(SSL)?????????????????????????????????SSL??????????????????????????????????????????????MBean????????WLST ls?????WLST find?????JRockit Mission Control?config.xml???????????????????WebLogic Server MBean Reference????????????????? ??? WLST??????????????????????????????????????????????????????????????????ThreadPoolRuntimeMBean??????JMS?????????WLST??????????????? ??????????????????????????? WLST ????????? $WL_HOME/samples/server/examples/src/examples/wlst/online WLST????????????? $WL_HOME/common/templates/scripts/wlst ???????????????????????????????????????????????????????????????????WLST???????????????????·??????????WLST????????????????????? ?????? WebLogic Server??? WebLogic Server?????????WebLogic Server?????! WebLogic Server??????(???????????) WebLogic Server???????? WebLogic Server??????

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Java Management Extensions with Oracle WebLogic Server 12c–Webcast Nocember 13th 2012

- by JuergenKress

Date: Tuesday, November 13, 2012 Time: 10:00 AM PST You’re responsible for evaluating technologies to monitor and configure Oracle WebLogic Server. This Webcast will help you get a complete picture of what Oracle WebLogic Server 12c with Java Management Extensions (JMX) can do for you. Dr. Frank Munz will explain the development of JMX with Spring and compare it to Java EE. A new feature of Oracle WebLogic Server 12c, the RESTful Management API, will also be examined. Learn how JMX in Oracle WebLogic Server 12c is: Highly efficient. It uses WebLogic Scripting Tool (WLST) instead of a client JMX program written in Java, resulting in little overhead. Effective. It bundles optimized tools such as WLST and WebLogic Diagnostic Framework to eliminate the requirement for Java programming on the client side. Compliant. It is fully standard-compliant but also works with open source clients and frameworks. Register for the Webcast today. Speakers: Dr. Frank Munz, Oracle Technologist of the Year Dave Cabelus, Senior Principal Product Manager, Oracle WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: Java,Frank Munz,WebLogic Community,Oracle,OPN,Jürgen Kress

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Calculating the Size (in Bytes and MB) of a Oracle Coherence Cache

- by Ricardo Ferreira

The concept and usage of data grids are becoming very popular in this days since this type of technology are evolving very fast with some cool lead products like Oracle Coherence. Once for a while, developers need an programmatic way to calculate the total size of a specific cache that are residing in the data grid. In this post, I will show how to accomplish this using Oracle Coherence API. This example has been tested with 3.6, 3.7 and 3.7.1 versions of Oracle Coherence. To start the development of this example, you need to create a POJO ("Plain Old Java Object") that represents a data structure that will hold user data. This data structure will also create an internal fat so I call that should increase considerably the size of each instance in the heap memory. Create a Java class named "Person" as shown in the listing below. package com.oracle.coherence.domain; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Random; @SuppressWarnings("serial") public class Person implements Serializable { private String firstName; private String lastName; private List<Object> fat; private String email; public Person() { generateFat(); } public Person(String firstName, String lastName, String email) { setFirstName(firstName); setLastName(lastName); setEmail(email); generateFat(); } private void generateFat() { fat = new ArrayList<Object>(); Random random = new Random(); for (int i = 0; i < random.nextInt(18000); i++) { HashMap<Long, Double> internalFat = new HashMap<Long, Double>(); for (int j = 0; j < random.nextInt(10000); j++) { internalFat.put(random.nextLong(), random.nextDouble()); } fat.add(internalFat); } } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } } Now let's create a Java program that will start a data grid into Coherence and will create a cache named "People", that will hold people instances with sequential integer keys. Each person created in this program will trigger the execution of a custom constructor created in the People class that instantiates an internal fat (the random amount of data generated to increase the size of the object) for each person. Create a Java class named "CreatePeopleCacheAndPopulateWithData" as shown in the listing below. package com.oracle.coherence.demo; import com.oracle.coherence.domain.Person; import com.tangosol.net.CacheFactory; import com.tangosol.net.NamedCache; public class CreatePeopleCacheAndPopulateWithData { public static void main(String[] args) { // Asks Coherence for a new cache named "People"... NamedCache people = CacheFactory.getCache("People"); // Creates three people that will be putted into the data grid. Each person // generates an internal fat that should increase its size in terms of bytes... Person pessoa1 = new Person("Ricardo", "Ferreira", "[email protected]"); Person pessoa2 = new Person("Vitor", "Ferreira", "[email protected]"); Person pessoa3 = new Person("Vivian", "Ferreira", "[email protected]"); // Insert three people at the data grid... people.put(1, pessoa1); people.put(2, pessoa2); people.put(3, pessoa3); // Waits for 5 minutes until the user runs the Java program // that calculates the total size of the people cache... try { System.out.println("---> Waiting for 5 minutes for the cache size calculation..."); Thread.sleep(300000); } catch (InterruptedException ie) { ie.printStackTrace(); } } } Finally, let's create a Java program that, using the Coherence API and JMX, will calculate the total size of each cache that the data grid is currently managing. The approach used in this example was retrieve every cache that the data grid are currently managing, but if you are interested on an specific cache, the same approach can be used, you should only filter witch cache will be looked for. Create a Java class named "CalculateTheSizeOfPeopleCache" as shown in the listing below. package com.oracle.coherence.demo; import java.text.DecimalFormat; import java.util.Map; import java.util.Set; import java.util.TreeMap; import javax.management.MBeanServer; import javax.management.MBeanServerFactory; import javax.management.ObjectName; import com.tangosol.net.CacheFactory; public class CalculateTheSizeOfPeopleCache { @SuppressWarnings({ "unchecked", "rawtypes" }) private void run() throws Exception { // Enable JMX support in this Coherence data grid session... System.setProperty("tangosol.coherence.management", "all"); // Create a sample cache just to access the data grid... CacheFactory.getCache(MBeanServerFactory.class.getName()); // Gets the JMX server from Coherence data grid... MBeanServer jmxServer = getJMXServer(); // Creates a internal data structure that would maintain // the statistics from each cache in the data grid... Map cacheList = new TreeMap(); Set jmxObjectList = jmxServer.queryNames(new ObjectName("Coherence:type=Cache,*"), null); for (Object jmxObject : jmxObjectList) { ObjectName jmxObjectName = (ObjectName) jmxObject; String cacheName = jmxObjectName.getKeyProperty("name"); if (cacheName.equals(MBeanServerFactory.class.getName())) { continue; } else { cacheList.put(cacheName, new Statistics(cacheName)); } } // Updates the internal data structure with statistic data // retrieved from caches inside the in-memory data grid... Set<String> cacheNames = cacheList.keySet(); for (String cacheName : cacheNames) { Set resultSet = jmxServer.queryNames( new ObjectName("Coherence:type=Cache,name=" + cacheName + ",*"), null); for (Object resultSetRef : resultSet) { ObjectName objectName = (ObjectName) resultSetRef; if (objectName.getKeyProperty("tier").equals("back")) { int unit = (Integer) jmxServer.getAttribute(objectName, "Units"); int size = (Integer) jmxServer.getAttribute(objectName, "Size"); Statistics statistics = (Statistics) cacheList.get(cacheName); statistics.incrementUnit(unit); statistics.incrementSize(size); cacheList.put(cacheName, statistics); } } } // Finally... print the objects from the internal data // structure that represents the statistics from caches... cacheNames = cacheList.keySet(); for (String cacheName : cacheNames) { Statistics estatisticas = (Statistics) cacheList.get(cacheName); System.out.println(estatisticas); } } public MBeanServer getJMXServer() { MBeanServer jmxServer = null; for (Object jmxServerRef : MBeanServerFactory.findMBeanServer(null)) { jmxServer = (MBeanServer) jmxServerRef; if (jmxServer.getDefaultDomain().equals(DEFAULT_DOMAIN) || DEFAULT_DOMAIN.length() == 0) { break; } jmxServer = null; } if (jmxServer == null) { jmxServer = MBeanServerFactory.createMBeanServer(DEFAULT_DOMAIN); } return jmxServer; } private class Statistics { private long unit; private long size; private String cacheName; public Statistics(String cacheName) { this.cacheName = cacheName; } public void incrementUnit(long unit) { this.unit += unit; } public void incrementSize(long size) { this.size += size; } public long getUnit() { return unit; } public long getSize() { return size; } public double getUnitInMB() { return unit / (1024.0 * 1024.0); } public double getAverageSize() { return size == 0 ? 0 : unit / size; } public String toString() { StringBuffer sb = new StringBuffer(); sb.append("\nCache Statistics of '").append(cacheName).append("':\n"); sb.append(" - Total Entries of Cache -----> " + getSize()).append("\n"); sb.append(" - Used Memory (Bytes) --------> " + getUnit()).append("\n"); sb.append(" - Used Memory (MB) -----------> " + FORMAT.format(getUnitInMB())).append("\n"); sb.append(" - Object Average Size --------> " + FORMAT.format(getAverageSize())).append("\n"); return sb.toString(); } } public static void main(String[] args) throws Exception { new CalculateTheSizeOfPeopleCache().run(); } public static final DecimalFormat FORMAT = new DecimalFormat("###.###"); public static final String DEFAULT_DOMAIN = ""; public static final String DOMAIN_NAME = "Coherence"; } I've commented the overall example so, I don't think that you should get into trouble to understand it. Basically we are dealing with JMX. The first thing to do is enable JMX support for the Coherence client (ie, an JVM that will only retrieve values from the data grid and will not integrate the cluster) application. This can be done very easily using the runtime "tangosol.coherence.management" system property. Consult the Coherence documentation for JMX to understand the possible values that could be applied. The program creates an in memory data structure that holds a custom class created called "Statistics". This class represents the information that we are interested to see, which in this case are the size in bytes and in MB of the caches. An instance of this class is created for each cache that are currently managed by the data grid. Using JMX specific methods, we retrieve the information that are relevant for calculate the total size of the caches. To test this example, you should execute first the CreatePeopleCacheAndPopulateWithData.java program and after the CreatePeopleCacheAndPopulateWithData.java program. The results in the console should be something like this: 2012-06-23 13:29:31.188/4.970 Oracle Coherence 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/tangosol-coherence.xml" 2012-06-23 13:29:31.219/5.001 Oracle Coherence 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/tangosol-coherence-override-dev.xml" 2012-06-23 13:29:31.219/5.001 Oracle Coherence 3.6.0.4 <D5> (thread=Main Thread, member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified 2012-06-23 13:29:31.266/5.048 Oracle Coherence 3.6.0.4 <D5> (thread=Main Thread, member=n/a): Optional configuration override "/custom-mbeans.xml" is not specified Oracle Coherence Version 3.6.0.4 Build 19111 Grid Edition: Development mode Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 2012-06-23 13:29:33.156/6.938 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded Reporter configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/reports/report-group.xml" 2012-06-23 13:29:33.500/7.282 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/coherence-cache-config.xml" 2012-06-23 13:29:35.391/9.173 Oracle Coherence GE 3.6.0.4 <D4> (thread=Main Thread, member=n/a): TCMP bound to /192.168.177.133:8090 using SystemSocketProvider 2012-06-23 13:29:37.062/10.844 Oracle Coherence GE 3.6.0.4 <Info> (thread=Cluster, member=n/a): This Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=2) joined cluster "cluster:0xC4DB" with senior Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=2) 2012-06-23 13:29:37.172/10.954 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service Cluster with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service Management with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service DistributedCache with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Started cluster Name=cluster:0xC4DB Group{Address=224.3.6.0, Port=36000, TTL=4} MasterMemberSet ( ThisMember=Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle) OldestMember=Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith) ActualMemberSet=MemberSet(Size=2, BitSetCount=2 Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith) Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle) ) RecycleMillis=1200000 RecycleSet=MemberSet(Size=0, BitSetCount=0 ) ) TcpRing{Connections=[1]} IpMonitor{AddressListSize=0} 2012-06-23 13:29:37.891/11.673 Oracle Coherence GE 3.6.0.4 <D5> (thread=Invocation:Management, member=2): Service Management joined the cluster with senior service member 1 2012-06-23 13:29:39.203/12.985 Oracle Coherence GE 3.6.0.4 <D5> (thread=DistributedCache, member=2): Service DistributedCache joined the cluster with senior service member 1 2012-06-23 13:29:39.297/13.079 Oracle Coherence GE 3.6.0.4 <D4> (thread=DistributedCache, member=2): Asking member 1 for 128 primary partitions Cache Statistics of 'People': - Total Entries of Cache -----> 3 - Used Memory (Bytes) --------> 883920 - Used Memory (MB) -----------> 0.843 - Object Average Size --------> 294640 I hope that this post could save you some time when calculate the total size of Coherence cache became a requirement for your high scalable system using data grids. See you!

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Extended JMS Support

- by ACShorten

In a previous post I discussed the real time JMS integration we added in FW4.1 and also as patches for FW2.2. There are some additional aspects of this integration I did not mention which may be of interest: JMS Topic Support - In the post I concentrated on talking about JMS Queue support but failed to mention that the MDB and outgoing real time JMS also supports JMS Topics. JMS Queues are typically used for point to point decoupled integration and JMS Topics are used for hub integration that uses Publish and Subscribe. JMS Selector Support - By default the MDB will process every message from a JMS resource (Queue or Topic). If you want to alter this behaviour to selectively filter JMS messages then you can use JMS Selectors to specify the conditions for the MDB to selectively process JMS messages based upon conditions. JMS Selectors allow filters to be specified on elements in the JMS Header and JMS Message Properties using SQL like syntax. Note: JMS Selectors do not support filters on the body elements. JMS Header Support - It is possible to place custom information in the JMS Header and JMS Message Properties for outgoing messages (so that other applications can use JMS selectors if necessary as well). This is only available when installing Patches 11888040 (FW4.1) and 11850795 (FW2.2). These facilities coupled with the JMS facilities described in the previous posts gives the product integration capabilities in JMS which can be used with configuration rather than coding. Of course, the JMS facility I have described can also be used in conjunction with SOA Suite to provide greater levels of traceability and management.

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List of available whitepapers as at 04 May 2010

- by Anthony Shorten

The following table lists the whitepapers available, from My Oracle Support, for any Oracle Utilities Application Framework based product: KB Id Document Title Contents 559880.1 ConfigLab Design Guidelines Whitepaper outlining how to design and implement a ConfigLab solution. 560367.1 Technical Best Practices for Oracle Utilities Application Framework Based Products Whitepaper summarizing common technical best practices used by partners, implementation teams and customers. 560382.1 Performance Troubleshooting Guideline Series A set of whitepapers on tracking performance at each tier in the framework. The individual whitepapers are as follows: Concepts - General Concepts and Performance Troublehooting processes Client Troubleshooting - General troubleshooting of the browser client with common issues and resolutions. Network Troubleshooting - General troubleshooting of the network with common issues and resolutions. Web Application Server Troubleshooting - General troubleshooting of the Web Application Server with common issues and resolutions. Server Troubleshooting - General troubleshooting of the Operating system with common issues and resolutions. Database Troubleshooting - General troubleshooting of the database with common issues and resolutions. Batch Troubleshooting - General troubleshooting of the background processing component of the product with common issues and resolutions. 560401.1 Software Configuration Management Series A set of whitepapers on how to manage customization (code and data) using the tools provided with the framework. The individual whitepapers are as follows: Concepts - General concepts and introduction. Environment Management - Principles and techniques for creating and managing environments. Version Management - Integration of Version control and version management of configuration items. Release Management - Packaging configuration items into a release. Distribution - Distribution and installation of releases across environments Change Management - Generic change management processes for product implementations. Status Accounting -Status reporting techniques using product facilities. Defect Management -Generic defect management processes for product implementations. Implementing Single Fixes - Discussion on the single fix architecture and how to use it in an implementation. Implementing Service Packs - Discussion on the service packs and how to use them in an implementation. Implementing Upgrades - Discussion on the the upgrade process and common techniques for minimizing the impact of upgrades. 773473.1 Oracle Utilities Application Framework Security Overview Whitepaper summarizing the security facilities in the framework. Updated for OUAF 4.0.1 774783.1 LDAP Integration for Oracle Utilities Application Framework based products Whitepaper summarizing how to integrate an external LDAP based security repository with the framework. 789060.1 Oracle Utilities Application Framework Integration Overview Whitepaper summarizing all the various common integration techniques used with the product (with case studies). 799912.1 Single Sign On Integration for Oracle Utilities Application Framework based products Whitepaper outlining a generic process for integrating an SSO product with the framework. 807068.1 Oracle Utilities Application Framework Architecture Guidelines This whitepaper outlines the different variations of architecture that can be considered. Each variation will include advice on configuration and other considerations. 836362.1 Batch Best Practices for Oracle Utilities Application Framework based products This whitepaper oulines the common and best practices implemented by sites all over the world. Updated for OUAF 4.0.1 856854.1 Technical Best Practices V1 Addendum Addendum to Technical Best Practices for Oracle Utilities Application Framework Based Products containing only V1.x specific advice. 942074.1 XAI Best Practices This whitepaper outlines the common integration tasks and best practices for the Web Services Integration provided by the Oracle Utilities Application Framework. Updated for OUAF 4.0.1 970785.1 Oracle Identity Manager Integration Overview This whitepaper outlines the principals of the prebuilt intergration between Oracle Utilities Application Framework Based Products and Orade Identity Manager used to provision user and user group secuity information 1068958.1 Production Environment Configuration Guidelines (New!) Whitepaper outlining common production level settings for the products

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AccessControlException when trying to redeploy webapp to Tomcat using Netbeans

- by Venc

I'm getting the following error trying redeploy an webapp on Tomcat from within Netbeans 6.8. It has probably something to do with the new deploy on save and hot swap functionality. Any ideas how to resolve this issue? INFO: Error registering wrapper with jmx StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CubeAdSaSim2] Catalina:j2eeType=WebModule,name=//localhost/CubeAdSaSim2,J2EEApplication=none,J2EEServer=none java.security.AccessControlException: access denied (javax.management.MBeanTrustPermission register) java.security.AccessControlException: access denied (javax.management.MBeanTrustPermission register) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323) at java.lang.SecurityManager.checkPermission(SecurityManager.java:568) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.checkMBeanTrustPermission(DefaultMBeanServerInterceptor.java:1824) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:310) at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482) at org.apache.tomcat.util.modeler.Registry.registerComponent(Registry.java:805) at org.apache.catalina.core.StandardContext.registerJMX(StandardContext.java:5281) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4482) at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:377) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:196) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619)

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Spring maven libraries

- by Calm Storm

I would like to know why some of the libraries are not released during a normal release cycle. For example, from http://repo2.maven.org/maven2/org/springframework/ while spring-core have 3.0.3-RELEASE, spring-remoting and spring-jmx were released only in 2.0.8. Can someone tell me what this would mean? I agree that if there are no changes in the component say spring-jmx then they don't have to release it, but since 90% of the world uses Maven for dependency management can they not just re-release the same libs (of spring-remoting and spring-jmx?) I ask this because I declare my deps like, <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-remoting</artifactId> <version>${spring.version}</version> </dependency> and I would prefer supplying one spring.version instead of keeping version numbers upto date for all components? The four libraries of interest to me are spring-dao, spring-support, spring-jmx, spring-remoting

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JbossESB jmsProvider cannot convert IBMMQ JMS Message JMSTextMessage

- by Himanshu

I am trying to integrate IBMMQ v6.0.2 with jbossESB. we have local Queue available on IBMMQ on one of our QA QUEUEMANAGER. I am able to listen to the QUEUE using JMSprovider of jboss ESB. As soon as a message (of type jms_text ) is dropped , esb listen to it and pick it up and before it hit the next action it throws following error message. ERROR [JmsComposer] Unsupported JMS message type: com.ibm.jms.JMSTextMessage Here are the steps I followed. jboss-service.mxl : Defined Connection Factory and QUEUE added jars ( com.ibm.mq.* ) to ${jbossesb}/server/${mynode}/lib Added jms lsinterner configuration on jboss-esb.xml Please guide me what I m missing here... Do I need to create custom MessagePlugin ? jboss-esb looks like this <jms-provider name="WSMQ" connection-factory="MQQueueConnectionFactory"> <jms-bus busid="queuestartGwChannel"> <jms-message-filter dest-type="QUEUE" dest-name="wsmq/SerivceOrderQueue" acknowledge-mode ="AUTO_ACKNOWLEDGE" /> </jms-bus> <jms-bus busid="queuestartEsbChannel"> <jms-message-filter dest-type="QUEUE" dest-name="wsmq/SerivceOrderQueue" /> </jms-bus> </jms-provider> jboss-service.xml looks like this <mbean code="jmx.service.wsmq.WSMQConnectionFactory" name="jmx.service.wsmq:service=MQQueueConnectionFactory"> <attribute name="JndiName">MQQueueConnectionFactory</attribute> <attribute name="JMSStyle">Queue</attribute> <attribute name="IsXA">false</attribute> <attribute name="QueueManagerName">SQAT0083</attribute> <attribute name="HostName">111.111.111.111</attribute> <attribute name="Port">1415</attribute> <attribute name="Channel">MYCO.SVRCONN</attribute> <attribute name="TransportType">CLIENT</attribute> <depends>jboss:service=Naming</depends> </mbean> <mbean code="jmx.service.wsmq.WSMQDestination" name="jmx.service.wsmq:service=WSMQRequestQueue"> <attribute name="JndiName">wsmq/SerivceOrderQueue</attribute> <attribute name="JMSStyle">Queue</attribute> <attribute name="QueueManagerName">SQAT0083</attribute> <attribute name="DestinationName">MYCO.SERVICEORDER.QA01.QL01</attribute> <attribute name="TargetClient">MQ</attribute> <depends>jboss:service=Naming</depends> </mbean> I am using jboss-eap-4.3. Really appreciate any help.

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Memory leak of java.lang.ref.WeakReference objects inside JDK classes

- by mandye

The following simple code reproduces the growth of java.lang.ref.WeakReference objects in the heap: public static void main(String[] args) throws Exception { while (true) { java.util.logging.Logger.getAnonymousLogger(); Thread.sleep(1); } } Here is the output of jmap command within a few seconds interval: user@t1007:~ jmap -d64 -histo:live 29201|grep WeakReference 8: 22493 1079664 java.lang.ref.WeakReference 31: 1 32144 [Ljava.lang.ref.WeakReference; 106: 17 952 com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference user@t1007:~ jmap -d64 -histo:live 29201|grep WeakReference 8: 23191 1113168 java.lang.ref.WeakReference 31: 1 32144 [Ljava.lang.ref.WeakReference; 103: 17 952 com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference user@t1007:~ jmap -d64 -histo:live 29201|grep WeakReference 8: 23804 1142592 java.lang.ref.WeakReference 31: 1 32144 [Ljava.lang.ref.WeakReference; 103: 17 952 com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference Note that jmap command forces FullGC. JVM settings: export JVM_OPT="\ -d64 \ -Xms200m -Xmx200m \ -XX:MaxNewSize=64m \ -XX:NewSize=64m \ -XX:+UseParNewGC \ -XX:+UseConcMarkSweepGC \ -XX:MaxTenuringThreshold=10 \ -XX:SurvivorRatio=2 \ -XX:CMSInitiatingOccupancyFraction=60 \ -XX:+UseCMSInitiatingOccupancyOnly \ -XX:+CMSParallelRemarkEnabled \ -XX:+DisableExplicitGC \ -XX:+CMSClassUnloadingEnabled \ -XX:+PrintGCTimeStamps \ -XX:+PrintGCDetails \ -XX:+PrintTenuringDistribution \ -XX:+PrintGCApplicationConcurrentTime \ -XX:+PrintGCApplicationStoppedTime \ -XX:+PrintGCApplicationStoppedTime \ -XX:+PrintClassHistogram \ -XX:+ParallelRefProcEnabled \ -XX:SoftRefLRUPolicyMSPerMB=1 \ -verbose:gc \ -Xloggc:$GCLOGFILE" java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) Server VM (build 16.0-b13, mixed mode) Solaris 10/Sun Fire(TM) T1000

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What's a good Java-based Master-Slave communication mechanism?

- by plecong

I'm creating a Java application that requires master-slave communication between JVMs, possibly residing on the same physical machine. There will be a "master" server running inside a JEE application server (i.e. JBoss) that will have "slave" clients connect to it and dynamically register itself for communication (that is the master will not know the IP addresses/ports of the slaves so cannot be configured in advance). The master server acts as a controller that will dole work out to the slaves and the slaves will periodically respond with notifications, so there would be bi-directional communication. I was originally thinking of RPC-based systems where each side would be a server, but it could get complicated, so I'd prefer a mechanism where there's an open socket and they talk back and forth. I'm looking for a communication mechanism that would be low-latency where the messages would be mostly primitive types, so no serious serialization is necessary. Here's what I've looked at: RMI JMS: Built-in to Java, the "slave" clients would connect to the existing ConnectionFactory in the application server. JAX-WS/RS: Both master and slave would be servers exposing an RPC interface for bi-directional communication. JGroups/Hazelcast: Use shared distributed data structures to facilitate communication. Memcached/MongoDB: Use these as "queues" to facilitate communication, though the clients would have to poll so there would be some latency. Thrift: This does seem to keep a persistent connection, but not sure how to integrate/embed a Thrift server into JBoss WebSocket/Raw Socket: This would work, but require a lot more custom code than I'd like. Is there any technology I'm missing? Edit: Also looked at: JMX: Have the client connect to JBoss' JMX server and receive JMX notifications for bidirectional comms.

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JBoss AS 5: starts but can't connect (Windows, remote)

- by Nuwan

Hello I installed Jboss 5.0GA and Its works fine in localhost.But I want It to access through remote Machine.Then I bind my IP address to my server and started it.This is the command I used run.bat -b 10.17.62.63 Then the server Starts fine This is the console log when starting the server > =============================================================================== > > JBoss Bootstrap Environment > > JBOSS_HOME: C:\jboss-5.0.0.GA > > JAVA: C:\Program Files\Java\jdk1.6.0_34\bin\java > > JAVA_OPTS: -Dprogram.name=run.bat -server -Xms128m -Xmx512m > -XX:MaxPermSize=25 6m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Ds un.rmi.dgc.server.gcInterval=3600000 > > CLASSPATH: C:\jboss-5.0.0.GA\bin\run.jar > > =============================================================================== > > run.bat: unused non-option argument: ûb run.bat: unused non-option > argument: 0.0.0.0 13:43:38,179 INFO [ServerImpl] Starting JBoss > (Microcontainer)... 13:43:38,179 INFO [ServerImpl] Release ID: JBoss > [Morpheus] 5.0.0.GA (build: SV NTag=JBoss_5_0_0_GA date=200812041714) > 13:43:38,179 INFO [ServerImpl] Bootstrap URL: null 13:43:38,179 INFO > [ServerImpl] Home Dir: C:\jboss-5.0.0.GA 13:43:38,179 INFO > [ServerImpl] Home URL: file:/C:/jboss-5.0.0.GA/ 13:43:38,195 INFO > [ServerImpl] Library URL: file:/C:/jboss-5.0.0.GA/lib/ 13:43:38,195 > INFO [ServerImpl] Patch URL: null 13:43:38,195 INFO [ServerImpl] > Common Base URL: file:/C:/jboss-5.0.0.GA/common/ > > 13:43:38,195 INFO [ServerImpl] Common Library URL: > file:/C:/jboss-5.0.0.GA/comm on/lib/ 13:43:38,195 INFO [ServerImpl] > Server Name: default 13:43:38,195 INFO [ServerImpl] Server Base Dir: > C:\jboss-5.0.0.GA\server 13:43:38,195 INFO [ServerImpl] Server Base > URL: file:/C:/jboss-5.0.0.GA/server/ > > 13:43:38,210 INFO [ServerImpl] Server Config URL: > file:/C:/jboss-5.0.0.GA/serve r/default/conf/ 13:43:38,210 INFO > [ServerImpl] Server Home Dir: C:\jboss-5.0.0.GA\server\defaul t > 13:43:38,210 INFO [ServerImpl] Server Home URL: > file:/C:/jboss-5.0.0.GA/server/ default/ 13:43:38,210 INFO > [ServerImpl] Server Data Dir: C:\jboss-5.0.0.GA\server\defaul t\data > 13:43:38,210 INFO [ServerImpl] Server Library URL: > file:/C:/jboss-5.0.0.GA/serv er/default/lib/ 13:43:38,210 INFO > [ServerImpl] Server Log Dir: C:\jboss-5.0.0.GA\server\default \log > 13:43:38,210 INFO [ServerImpl] Server Native Dir: > C:\jboss-5.0.0.GA\server\defa ult\tmp\native 13:43:38,210 INFO > [ServerImpl] Server Temp Dir: C:\jboss-5.0.0.GA\server\defaul t\tmp > 13:43:38,210 INFO [ServerImpl] Server Temp Deploy Dir: > C:\jboss-5.0.0.GA\server \default\tmp\deploy 13:43:39,710 INFO > [ServerImpl] Starting Microcontainer, bootstrapURL=file:/C:/j > boss-5.0.0.GA/server/default/conf/bootstrap.xml 13:43:40,851 INFO > [VFSCacheFactory] Initializing VFSCache [org.jboss.virtual.pl > ugins.cache.IterableTimedVFSCache] 13:43:40,866 INFO > [VFSCacheFactory] Using VFSCache [IterableTimedVFSCache{lifet > ime=1800, resolution=60}] 13:43:41,616 INFO [CopyMechanism] VFS temp > dir: C:\jboss-5.0.0.GA\server\defaul t\tmp 13:43:41,648 INFO > [ZipEntryContext] VFS force nested jars copy-mode is enabled. > > 13:43:44,288 INFO [ServerInfo] Java version: 1.6.0_34,Sun > Microsystems Inc. 13:43:44,288 INFO [ServerInfo] Java VM: Java > HotSpot(TM) Server VM 20.9-b04,Sun Microsystems Inc. 13:43:44,288 > INFO [ServerInfo] OS-System: Windows XP 5.1,x86 13:43:44,569 INFO > [JMXKernel] Legacy JMX core initialized 13:43:50,148 INFO > [ProfileServiceImpl] Loading profile: default from: org.jboss > .system.server.profileservice.repository.SerializableDeploymentRepository@e72f0c > (root=C:\jboss-5.0.0.GA\server, > key=org.jboss.profileservice.spi.ProfileKey@143b > 82c3[domain=default,server=default,name=default]) 13:43:50,148 INFO > [ProfileImpl] Using repository:org.jboss.system.server.profil > eservice.repository.SerializableDeploymentRepository@e72f0c(root=C:\jboss-5.0.0. > GA\server, > key=org.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,s > erver=default,name=default]) 13:43:50,148 INFO [ProfileServiceImpl] > Loaded profile: ProfileImpl@8b3bb3{key=o > rg.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,server=default,na > me=default]} 13:43:54,804 INFO [WebService] Using RMI server > codebase: http://127.0.0.1:8083 / 13:44:12,147 INFO [CXFServerConfig] > JBoss Web Services - Stack CXF Runtime Serv er 13:44:12,147 INFO > [CXFServerConfig] 3.1.2.GA 13:44:29,788 INFO > [Ejb3DependenciesDeployer] Encountered deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:37,116 INFO [JMXConnectorServerService] JMX Connector > server: service:jmx > :rmi://127.0.0.1/jndi/rmi://127.0.0.1:1090/jmxconnector 13:44:38,022 > INFO [MailService] Mail Service bound to java:/Mail 13:44:43,162 WARN > [JBossASSecurityMetadataStore] WARNING! POTENTIAL SECURITY RI SK. It > has been detected that the MessageSucker component which sucks > messages f rom one node to another has not had its password changed > from the installation d efault. Please see the JBoss Messaging user > guide for instructions on how to do this. 13:44:43,209 WARN > [AnnotationCreator] No ClassLoader provided, using TCCL: org. > jboss.managed.api.annotation.ManagementComponent 13:44:43,600 INFO > [TransactionManagerService] JBossTS Transaction Service (JTA version) > - JBoss Inc. 13:44:43,600 INFO [TransactionManagerService] Setting up property manager MBean and JMX layer 13:44:44,366 INFO > [TransactionManagerService] Initializing recovery manager 13:44:44,678 > INFO [TransactionManagerService] Recovery manager configured > 13:44:44,678 INFO [TransactionManagerService] Binding > TransactionManager JNDI R eference 13:44:44,787 INFO > [TransactionManagerService] Starting transaction recovery man ager > 13:44:46,428 INFO [Http11Protocol] Initializing Coyote HTTP/1.1 on > http-127.0.0 .1-8080 13:44:46,459 INFO [AjpProtocol] Initializing > Coyote AJP/1.3 on ajp-127.0.0.1-80 09 13:44:46,459 INFO > [StandardService] Starting service jboss.web 13:44:46,475 INFO > [StandardEngine] Starting Servlet Engine: JBoss Web/2.1.1.GA > 13:44:46,616 INFO [Catalina] Server startup in 350 ms 13:44:46,709 > INFO [TomcatDeployment] deploy, ctxPath=/web-console, vfsUrl=manag > ement/console-mgr.sar/web-console.war 13:44:48,553 INFO > [TomcatDeployment] deploy, ctxPath=/juddi, vfsUrl=juddi-servi > ce.sar/juddi.war 13:44:48,678 INFO [RegistryServlet] Loading jUDDI > configuration. 13:44:48,694 INFO [RegistryServlet] Resources loaded > from: /WEB-INF/juddi.prope rties 13:44:48,709 INFO [RegistryServlet] > Initializing jUDDI components. 13:44:48,991 INFO [TomcatDeployment] > deploy, ctxPath=/invoker, vfsUrl=http-invo ker.sar/invoker.war > 13:44:49,162 INFO [TomcatDeployment] deploy, ctxPath=/jbossws, > vfsUrl=jbossws.s ar/jbossws-management.war 13:44:49,475 INFO > [RARDeployment] Required license terms exist, view vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jboss-local-jdbc.rar/META-INF/ra.xml > 13:44:49,569 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jboss-xa-jdbc.rar/META-INF/ra.xml > 13:44:49,741 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jms-ra.rar/META-INF/ra.xml > 13:44:49,819 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/mail-ra.rar/META-INF/ra.xml > 13:44:49,912 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/quartz-ra.rar/META-INF/ra.xml > 13:44:50,069 INFO [SimpleThreadPool] Job execution threads will use > class loade r of thread: main 13:44:50,115 INFO [QuartzScheduler] > Quartz Scheduler v.1.5.2 created. 13:44:50,131 INFO [RAMJobStore] > RAMJobStore initialized. 13:44:50,131 INFO [StdSchedulerFactory] > Quartz scheduler 'DefaultQuartzSchedule r' initialized from default > resource file in Quartz package: 'quartz.properties' > > 13:44:50,131 INFO [StdSchedulerFactory] Quartz scheduler version: > 1.5.2 13:44:50,131 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUS TERED started. 13:44:51,194 INFO > [ConnectionFactoryBindingService] Bound ConnectionManager 'jb > oss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name > 'java:DefaultDS' 13:44:51,819 WARN [QuartzTimerServiceFactory] sql > failed: CREATE TABLE QRTZ_JOB > _DETAILS(JOB_NAME VARCHAR(80) NOT NULL, JOB_GROUP VARCHAR(80) NOT NULL, DESCRIPT ION VARCHAR(120) NULL, JOB_CLASS_NAME VARCHAR(128) NOT > NULL, IS_DURABLE VARCHAR( 1) NOT NULL, IS_VOLATILE VARCHAR(1) NOT > NULL, IS_STATEFUL VARCHAR(1) NOT NULL, R EQUESTS_RECOVERY VARCHAR(1) > NOT NULL, JOB_DATA BINARY NULL, PRIMARY KEY (JOB_NAM E,JOB_GROUP)) > 13:44:51,912 INFO [SimpleThreadPool] Job execution threads will use > class loade r of thread: main 13:44:51,928 INFO [QuartzScheduler] > Quartz Scheduler v.1.5.2 created. 13:44:51,928 INFO [JobStoreCMT] > Using db table-based data access locking (synch ronization). > 13:44:51,944 INFO [JobStoreCMT] Removed 0 Volatile Trigger(s). > 13:44:51,944 INFO [JobStoreCMT] Removed 0 Volatile Job(s). > 13:44:51,944 INFO [JobStoreCMT] JobStoreCMT initialized. 13:44:51,944 > INFO [StdSchedulerFactory] Quartz scheduler 'JBossEJB3QuartzSchedu > ler' initialized from an externally provided properties instance. > 13:44:51,959 INFO [StdSchedulerFactory] Quartz scheduler version: > 1.5.2 13:44:51,959 INFO [JobStoreCMT] Freed 0 triggers from 'acquired' / 'blocked' st ate. 13:44:51,975 INFO [JobStoreCMT] > Recovering 0 jobs that were in-progress at the time of the last > shut-down. 13:44:51,975 INFO [JobStoreCMT] Recovery complete. > 13:44:51,975 INFO [JobStoreCMT] Removed 0 'complete' triggers. > 13:44:51,975 INFO [JobStoreCMT] Removed 0 stale fired job entries. > 13:44:51,990 INFO [QuartzScheduler] Scheduler > JBossEJB3QuartzScheduler_$_NON_CL USTERED started. 13:44:52,381 INFO > [ServerPeer] JBoss Messaging 1.4.1.GA server [0] started 13:44:52,569 > INFO [QueueService] Queue[/queue/DLQ] started, fullSize=200000, pa > geSize=2000, downCacheSize=2000 13:44:52,584 INFO [QueueService] > Queue[/queue/ExpiryQueue] started, fullSize=20 0000, pageSize=2000, > downCacheSize=2000 13:44:52,709 INFO [ConnectionFactory] Connector > bisocket://127.0.0.1:4457 has l easing enabled, lease period 10000 > milliseconds 13:44:52,709 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@1a8ac5e > started 13:44:52,725 WARN [ConnectionFactoryJNDIMapper] > supportsFailover attribute is t rue on connection factory: > jboss.messaging.connectionfactory:service=ClusteredCo nnectionFactory > but post office is non clustered. So connection factory will *no t* > support failover 13:44:52,725 WARN [ConnectionFactoryJNDIMapper] > supportsLoadBalancing attribute is true on connection factory: > jboss.messaging.connectionfactory:service=Cluste redConnectionFactory > but post office is non clustered. So connection factory wil l *not* > support load balancing 13:44:52,740 INFO [ConnectionFactory] > Connector bisocket://127.0.0.1:4457 has l easing enabled, lease period > 10000 milliseconds 13:44:52,740 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@1d43178 > started 13:44:52,740 INFO [ConnectionFactory] Connector > bisocket://127.0.0.1:4457 has l easing enabled, lease period 10000 > milliseconds 13:44:52,756 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@52728a > started 13:44:53,084 INFO [ConnectionFactoryBindingService] Bound > ConnectionManager 'jb > oss.jca:service=ConnectionFactoryBinding,name=JmsXA' to JNDI name > 'java:JmsXA' 13:44:53,225 INFO [TomcatDeployment] deploy, ctxPath=/, > vfsUrl=ROOT.war 13:44:53,553 INFO [TomcatDeployment] deploy, > ctxPath=/jmx-console, vfsUrl=jmx-c onsole.war 13:44:53,975 INFO > [TomcatDeployment] deploy, ctxPath=/TestService, vfsUrl=TestS > erviceEAR.ear/TestService.war 13:44:55,662 INFO [JBossASKernel] > Created KernelDeployment for: myE-ejb.jar 13:44:55,709 INFO > [JBossASKernel] installing bean: jboss.j2ee:jar=myE-ejb.jar,n > ame=RPSService,service=EJB3 13:44:55,725 INFO [JBossASKernel] with > dependencies: 13:44:55,725 INFO [JBossASKernel] and demands: > 13:44:55,725 INFO [JBossASKernel] > jboss.ejb:service=EJBTimerService 13:44:55,725 INFO [JBossASKernel] > and supplies: 13:44:55,725 INFO [JBossASKernel] > jndi:RPSService/remote 13:44:55,725 INFO [JBossASKernel] Added > bean(jboss.j2ee:jar=myE-ejb.jar,name=RP SService,service=EJB3) to > KernelDeployment of: myE-ejb.jar 13:44:56,772 INFO > [SessionSpecContainer] Starting jboss.j2ee:jar=myE-ejb.jar,na > me=RPSService,service=EJB3 13:44:56,803 INFO [EJBContainer] STARTED > EJB: com.monz.rpz.RPSService ejbName: RPSService 13:44:56,819 INFO > [JndiSessionRegistrarBase] Binding the following Entries in G lobal > JNDI: > > > 13:44:57,381 INFO [DefaultEndpointRegistry] register: > jboss.ws:context=myE-ejb, endpoint=RPSService 13:44:57,428 INFO > [DescriptorDeploymentAspect] Add Service id=RPSService > address=http://127.0.0.1:8080/myE-ejb/RPSService > implementor=com.monz.rpz.RPSService > invoker=org.jboss.wsf.stack.cxf.InvokerEJB3 mtomEnabled=false > 13:44:57,459 INFO [DescriptorDeploymentAspect] JBossWS-CXF > configuration genera ted: > file:/C:/jboss-5.0.0.GA/server/default/tmp/jbossws/jbossws-cxf1864137209199 > 110130.xml 13:44:57,569 INFO [TomcatDeployment] deploy, ctxPath=/myE-ejb, vfsUrl=myE-ejb.j ar 13:44:57,709 WARN [config] > Unable to process deployment descriptor for context '/myE-ejb' > 13:44:59,334 INFO [Http11Protocol] Starting Coyote HTTP/1.1 on > http-127.0.0.1-8 080 13:44:59,397 INFO [AjpProtocol] Starting Coyote > AJP/1.3 on ajp-127.0.0.1-8009 13:44:59,459 INFO [ServerImpl] JBoss > (Microcontainer) [5.0.0.GA (build: SVNTag= JBoss_5_0_0_GA > date=200812041714)] Started in 1m:21s:233ms But Still I cant connect to It when I Type my IP address in my browser thanks

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jboss 4: enable UsersRolesLoginModule, where must users.properties files be placed?

- by golemwashere

I have an application (CQ5) that requires enabling unauthenticatedIdentity on jbossdir/conf/login-config.xml I used: <authentication> <login-module code = "org.jboss.security.auth.spi.UsersRolesLoginModule" flag = "required" > <module-option name="unauthenticatedIdentity">nobody</module-option> </login-module> </authentication> then I tried to copy jbossdir/conf/props/jmx-console-users.properties,jmx-console-roles.properties into users.properties and roles.properies (same dir). I still get this error: ERROR [org.jboss.security.auth.spi.UsersRolesLoginModule] Failed to load users/passwords/role files java.io.IOException: No properties file: users.properties or defaults: defaultUsers.properties found where should I put those files?

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Parse java console output with awk

- by Bob Rivers

Hi, I'm trying to use awk to parse an output generated by a java application, but it isn't working. It seems that the command after the pipe isn't able to get/see the data throwed by the java app. I'm executing the following command (with the return generated by the command): [root@localhost]# java -jar jmxclient.jar usr:pass host:port java.lang:type=Threading ThreadCount 06/11/2010 15:46:37 -0300 org.archive.jmx.Client ThreadCount: 103 What I need it's only the last part of the string. So I'm tryng to use awk (with pipe at the end of the line |awk -F ':' '{print $4}': [root@localhost]# java -jar jmxclient.jar usr:pass host:port java.lang:type=Threading ThreadCount|awk -F ':' '{print $4}' But the output isn't being parsed. It throws the entire string: 06/11/2010 15:46:37 -0300 org.archive.jmx.Client ThreadCount: 103 I also tryed to use |cut -f4 -d":" with the same result: the string isn't parsed. So my question is, how do I parse the output in order to get just the number at the end of the string? TIA, Bob

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JBoss DataSource - How can ConnectionCount be larget than MaxSize?

- by Qben

I am running JBoss 4.0.5GA and I have stumbled upon a strange scenario (In my eyes anyway). When I decreases the <max-connections> to 1 for a Quartz DataSource and restart the server everything works fine. When I check the JMX console I can see that ConnectionCount and MaxConnectionInUseCount are both 2. The question is, how can the ConnectionCount be higher than the pool MaxSize (Which is 1 in JMX console as expected)? As a note I did this to try to trigger a production problem I have from time to time where a Quartz DB connection cannot be retrieved for some odd reason (Pool not full).

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