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• Too many heap subpools might break the upgrade

  - by Mike Dietrich

  Recently one of our new upcoming Oracle Database 11.2 reference customers did upgrade their production database - a huge EBS system - from Oracle 9.2.0.8 to Oracle Database 11.2.0.2. They've tested very well, we've optimized the upgrade process, the recompilation timings etc.  But once the live upgrade was done it did fail in the JAVA component piece with this error: begin if initjvmaux.startstep('CREATE_JAVA_SYSTEM') then * ORA-29553: classw in use: SYS.javax/mail/folder ORA-06512: at "SYS.INITJVMAUX", line 23 ORA-06512: at line 5 Support diagnosis was pretty quick - and refered to:Bug 10165223 - ORA-29553: class in use: sys.javax/mail/folder during database upgrade But how could this happen? Actually I don't know as we have used the same init.ora setup on test and production. The only difference: the prod system has more CPUs and RAM. Anyway, the bug names as workarounds to either decrease the SGA to less than 1GB or decrease the number of heap subpools to 1. Finally this query did help to diagnose the number of heap subpools: select count(distinct kghluidx) num_subpools from x$kghlu where kghlushrpool = 1; The result was 2 - so we did run the upgrade now with this parameter set: _kghdsidx_count=1 And finally it did work well. One sad thing:After the upgrade did fail Support did recommend to restore the whole database - which took an additional 3-4 hours. As the ORACLE SERVER component has been already upgraded successfully at the stage where the error did happen it would have been fine to go on with the manual upgrade and start catupgrd.sql script. It would have been detected that the ORACLE SERVER is upgraded already and just picked up the non-upgraded components. The good news:Finally I had one extra slide to add to our workshop presentation

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• SWATCH - what am I doing wrong?

  - by Brian Dunbar

  What I want/need/desire is to log when a user logs into my FTP server. Problem: I can't make swatch work the way I should be able to. This data is logged to a file - but of course these logs are not kept very long. I can't keep the logs around forever, but I can extract data from then, analyze it, store results elsewhere. If there is a better way to do this than the following, I'm all ears. Swatch version 3.2.3 Perl 5.12 FTP: VSFTP OS (Test): OS X 10.6.8 OS (Production): Solaris From man I see I can pass contents to a command .. so I should be able to echo those values to file, do a sed/cut/uniq thing on them for stats. $ man swatch (snip) exec command Execute command. The command may contain variables which are substituted with fields from the matched line. A $N will be replaced by the Nth field in the line. A $0 or $* will be replaced by the entire line. Swatch file .swatchrc watchfor /OK LOGIN/ echo=red pipe "echo "0: $0 1:$1 2:$2 3:$3 4:$4 5:$5" >> /Users/bdunbar/dev/ftplog/output.txt" Launch with $ swatch -c /Users/bdunbar/.swatchrc --script-dir /Users/bdunbar/dev/ftplog -t /Users/bdunbar/dev/ftplog/vsftpd.log & Test echo "Mon July 9 03:11:07 2012 [pid 14938] [aetech] OK LOGIN: Client "206.209.255.227"" >> vsftpd.log Results - it's echoing to TTY. This is not needed or desired on the server, but it does tell me things are working. ftplog *** swatch version 3.2.3 (pid:25780) started at Mon Jul 9 15:23:33 CDT 2012 Mon July 9 03:11:07 2012 [pid 14938] [aetech] OK LOGIN: Client 206.209.255.227 Results - bad! I appear to not be sending the variables to text. $ tail -f output.txt 0: /Users/bdunbar/dev/ftplog/.swatch_script.25780 1: 2: 3: 4: 5:

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• Designing and refactoring of payment logic

  - by jokklan

  Im currently working on an application that helps users to coordinate dinner clubs and all related accounting. (A dinner club is where people in a group, take turns to cook for the rest and then you pay a small amount to participate. This is pretty normal in dorms and colleges where im from). However there is some different models that all have a price and the accounting aspect is therefore a little spread. We both have DinnerClub, ShoppingItem and are about to implement the third Payment when users pay their debts (or get refunded for expenses). Each of these have a "price" attribute and a users expense (that he or she needs refunded) is calculated by the total of these "prices" minus what other users have bought and he or she have used/participated in. My question is then if someone have some hints to refactor this bring all this behavior together in one place? For now have i thought about a Transaction class that are responsible for this behaviour, but I'm a little worried about the performance impact on having to query for another polymorphic record each time i want to show the price on dinner clubs and shopping items (i have a standard index page with a list for both so it's a lot of extra records being queried)...

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• Creating a folder named after the current date and time

  - by lowerkey

  I'm trying to create a powershell script that creates a new folder with the current date (formatted as yyyy-MM-dd) as a name. Here's what I have so far: PS C:\Users\me\Desktop> powershell.exe -command "new-item ($(get-location) + (Get-Date).year + "-" + (Get-Date).month + "-" + (Get-Date).day) -type directo ry" Die Benennung "C:\Users\me\Desktop" wurde nicht als Name eines Cmdlet, ein er Funktion, einer Skriptdatei oder eines ausführbaren Programms erkannt. Überp rüfen Sie die Schreibweise des Namens, oder ob der Pfad korrekt ist (sofern ent halten), und wiederholen Sie den Vorgang. Bei Zeile:1 Zeichen:35 + new-item (C:\Users\me\Desktop <<<< + (Get-Date).year + - + (Get-Date). month + - + (Get-Date).day) -type directory + CategoryInfo : ObjectNotFound: (C:\Users\j.moore\Desktop:String ) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException

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• Move unity launcher to bottom of the screen

  - by argvar

  I have Ubuntu 13.04 DESKTOP version and for some odd reason I'm told that the Unity launcher cannot be moved to the bottom of the screen because of several reasons: 1. Canonical wants it there so it fits with their overall design goals, namely when it comes to touchscreen devices and netbooks. This in my mind totally ignores the fact that most Ubuntu users are DESKTOP users. No matter what Canonicals long term goal is, it surely mustn't be at the expense of needs of their core user base. 2. Most monitors are widescreen, the launcher is more compact where it is. This is not only taking away the users choice, but is also a wrong assessment. Widescreen monitors can sometimes be rotated on a pivot, giving it a portrait aspect. By displaying the Unity launcher on the left side it takes up a lot of space. Many desktop users have multiple monitors, and having the launcher on the left side of each monitor is very awkward. Also, many websites are catered to fit on a half 1920 display, so you can have two browser windows open side-by-side with all content visible. The placement of the Unity launcher takes away the horizontal space meaning there's less room for each browser window, and you'll see the right side of the web pages being occluded. Any suggestion to simply hide the Unity launcher, or "Canonical knows best" or "get used to it" are unwelcome and totally ignores the above points. Linux is about choice. Canonical's stubbornness with the Unity launcher placement is inconsistent with what Linux is about.

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• We have our standards, and we need them

  - by Tony Davis

  The presenter suddenly broke off. He was midway through his section on how to apply to the relational database the Continuous Delivery techniques that allowed for rapid-fire rounds of development and refactoring, while always retaining a “production-ready” state. He sighed deeply and then launched into an astonishing diatribe against Database Administrators, much of his frustration directed toward Oracle DBAs, in particular. In broad strokes, he painted the picture of a brave new deployment philosophy being frustratingly shackled by the relational database, and by especially by the attitudes of the guardians of these databases. DBAs, he said, shunned change and “still favored tools I’d have been embarrassed to use in the ’80′s“. DBAs, Oracle DBAs especially, were more attached to their vendor than to their employer, since the former was the primary source of their career longevity and spectacular remuneration. He contended that someone could produce the best IDE or tool in the world for Oracle DBAs and yet none of them would give a stuff, unless it happened to come from the “mother ship”. I sat blinking in astonishment at the speaker’s vehemence, and glanced around nervously. Nobody in the audience disagreed, and a few nodded in assent. Although the primary target of the outburst was the Oracle DBA, it made me wonder. Are we who work with SQL Server, database professionals or merely SQL Server fanbois? Do DBAs, in general, have an image problem? Is it a good career-move to be seen to be holding onto a particular product by the whites of our knuckles, to the exclusion of all else? If we seek a broad, open-minded, knowledge of our chosen technology, the database, and are blessed with merely mortal powers of learning, then we like standards. Vendors of RDBMSs generally don’t conform to standards by instinct, but by customer demand. Microsoft has made great strides to adopt the international SQL Standards, where possible, thanks to considerable lobbying by the community. The implementation of Window functions is a great example. There is still work to do, though. SQL Server, for example, has an unusable version of the Information Schema. One cast-iron rule of any RDBMS is that we must be able to query the metadata using the same language that we use to query the data, i.e. SQL, and we do this by running queries against the INFORMATION_SCHEMA views. Developers who’ve attempted to apply a standard query that works on MySQL, or some other database, but doesn’t produce the expected results on SQL Server are advised to shun the Standards-based approach in favor of the vendor-specific one, using the catalog views. The argument behind this is sound and well-documented, and of course we all use those catalog views, out of necessity. And yet, as database professionals, committed to supporting the best databases for the business, whatever they are now and in the future, surely our heart should sink somewhat when we advocate a vendor specific approach, to a developer struggling with something as simple as writing a guard clause. And when we read messages on the Microsoft documentation informing us that we shouldn’t rely on INFORMATION_SCHEMA to identify reliably the schema of an object, in SQL Server!

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• Certify May Updates

  - by Sadia2

  We have added some release and platform certifications to MOS Certify Database: Oracle Database 10.2.0.5.0, Oracle Fail Safe Server 4.1.0 Fusion Middleware: Oracle Tuxedo 10.3.0.0.0, Oracle Business Intelligence Applications 11.1.1.7.1 E-Business Suite: Oracle E-Business Suite 12.1.2 JD Edwards EnterpriseOne: JD Edwards EnterpriseOne Database Server for In-Memory Applications X9.1.3.0, JD Edwards EnterpriseOne Business Services Server 9.1.3.0 JD Edwards World: JD Edwards World Base product A9.3-Single Byte  

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• Facebook Payments & Credits vs. Real-World & Charities

  - by Adam Tannon

  I am having a difficult time understanding Facebook's internal "e-commerce microcosm" and what it allows Facebook App developers to do (and what it restricts them from doing). Two use cases: I'm an e-com retailer selling clothes and coffee mugs (real-world goods) on my website; I want to write a Facebook App that allows Facebook users to buy my real-world goods from inside of Facebook using real money ($ USD) I'm highschool student trying to raise money for my senior class trip and want to build a Facebook App that allows Facebook users to donate to our class using real money ($ USD) Are these two scenarios possible? If not, why (what Facebook policies prohibit me from doing so)? If so, what APIs do I use: Payments or Credits? And how (specifically) would it work? Do Facebook Users have to first buy "credits" (which are mapped to $ USD values under the hood) and pay/donate with credits, or can they whip out their credit card and pay/donate right through my Facebook App? I think that last question really summarizes my confusion: can Facebook users enter their credit card info directly into Facebook Apps, or do you have to go through Payments/Credits APIs as a "middleman"?

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• best way to send messages to all subscribers with multiple subscriptions and multiple providers

  - by coding_idiot

  I'm writing an application in which - Many users can subsribe to posts made by another users. So for a single publisher there can be many subscribers. When a message is posted by an user X, all users who have subscribed to messages of User X will be sent an email. How to achieve this ? I'm thinking of using publish-subscribe pattern. And then I came through JMS. Which is the best JMS implementation to use according to your experience ? Or else what else solution do you propose to the given problem ? Shall I go for a straight-forward solution ?: User x posts a message, I find all users (from database) who subscribe to user x and then for every user, I call the sendEmail() method. [EDIT] My intention here is not to send-emails. I'm really sorry if it wasn't clear. I also have to send kind of system-notifications apart from Email to all subscribers. Right now, I've implemented the email-sending as a threadPool

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• How to Access User Directory shared by Apache on OS X Mountain Lion?

  - by schluchc

  When trying to access the local user web page on localhost/~username, I get a "403 Forbidden". The system web page in /Library/WebServer/Documents is accessible on localhost/ though, so I assume Apache is working fine. I know that this problem has been discussed several times, also on superuser. I implemented and checked all I could find, but I still couldn't solve the problem and would be glad if someone had a suggestion for this particular case: sudo apachectl -t returns Syntax OK. I have a username.conf file in /etc/apache2/users/: <Directory "/Users/username/Sites/"> Options Indexes MultiViews FollowSymLinks AllowOverride AuthConfig Limit Order allow,deny Allow from all </Directory> as proposed here [SuperUser] and in several other tutorials. The permissions of the username.conf file are -rw-r--r-- root wheel, as they should be. The httpd.conf is unchanged and therefore contains the line Include /private/etc/apache2/extra/httpd-userdir.conf. That file in turn contains UserDir Sites Include /private/etc/apache2/users/*.conf <IfModule bonjour_module> RegisterUserSite customized-users </IfModule> So the httpd*.conf files should be ok. The permissions of /Users/username/Sites is drwxr-xr-x 10 username staff and -rw-r--r--@ 1 username staff for the index.html. In the error log I simply get a [Sun Nov 25 22:14:32 2012] [error] [client 127.0.0.1] (13)Permission denied: access to /~username/ denied. And yes, after each change I did the sudo apachectl restart. Any help no how to solve the problem or how to further analyze it would be highly appreciated!

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• GPO - Setting not applied, although policy is applied

  - by Kenny Bones

  This is rather strange. In our domain we have several terminal servers and this morning a user reported that no drives are mapped when he logs on to the terminal server. So, I checked Group Policy Results and compare two users. Both users have the exact same policies applied. But for this particular user, the Script section under User Configuration - Policies - Windows Settings is just not there. For the other user, which this is working fine for, it says under the Script section that Winning GPO is Terminal2008, which is the GPO that contains the script section. And the Terminal2008 GPO is applied to both users. Also, the loopback processing is set to Replace. What could be the cause for this? I've never seen this particular issue before. I mean, both users are in the same OU, they log on to the same terminal server and the same policies are applied to both. They do not however have the exact same group memberships, but should that matter? It's not stated that the script should be run only if the user is a member of a certain group either. Not sure if that could be done through that specific setting either.All I know is, the very same policies are applied to both users, in the same OU and the same computer. Meaning, the same policies should be applied? Edit: I just ran Group Policy Results on one of the other terminal servers, which are also in the same OU, and the Scripts section is there! This means that this particular user don't get this setting when he's logged onto this particular server. What could be the cause of this?

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• Oracle University Neue Kurse (Week 12)

  - by swalker

  In der letzten Woche wurden von Oracle University folgende neue Kurse (bzw. Versionen davon) veröffentlicht: Database Oracle Enterprise Manager Cloud Control 12c: Install & Upgrade (2 days) Using Oracle Enterprise Manager Cloud Control 12c Introduction to Big Data (1 day seminar) Introduction to Oracle NoSQL Database (1 day seminar) Oracle Database Administration I: Certification Exam Preparation Seminar (Training On Demand) Development Tools Oracle Database SQL: Certification Exam Preparation Seminar (Training On Demand) MySQL MySQL for Beginners (4 days) Fusion Middleware Oracle Service Bus 11g: System Admin, Design & Integrate Accelerated (5 days) Oracle WebLogic Server 11g: Administration Essentials (Training On Demand) Oracle Solaris Developing and Deploying Applications on Oracle Solaris 11 (3 days) Fusion Applications Fusion Applications: Installation and Administration (4 days) E-Business Suite R12.x Oracle E-Business Suite Essentials for Implementers (Training On Demand) R12.x Implement Oracle Workflow (Training On Demand) R12.x Oracle Applications System Administrator Fundamentals (Training On Demand) PeopleSoft PeopleSoft PeopleTools I Rel 8.50 (Training On Demand) Wenn Sie weitere Einzelheiten erfahren oder sich über Kurstermine informieren möchten, wenden Sie sich einfach an Ihr lokales Oracle University-Team in. Bleiben Sie in Verbindung mit Oracle University: LinkedIn OracleMix Twitter Facebook Google+

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• How do I create a Unicode databases in PostgreSQL 8.4?

  - by wildpeaks

  I installed the postgresql-8.4 package with default options. Everything worked fine, however I can't seem to manage to create unicode databases: -- This doesn't work createdb test1 --encoding UNICODE -- This works createdb test2 The error message, createdb: database creation failed: ERROR: new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII) is a bit puzzling because (afaik) I don't use a template for creating the new db, or is it implicitely referring to the default "postgres" database for some reason ? Or maybe I'm missing a setting in a .conf file ?

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• JPOUG Tech Talk Next Week!

  - by roy.swonger

  Mike and I are really looking forward to our trip to Japan next week, not least because we will have the opportunity to visit the Japan Oracle User Group for a Tech Talk. You can find all of the details about this event here: JPOUG Tech Talk, Tuesday, 12-NOV-2013 The topic for our talk will be "Different ways to Upgrade, Migrate, and Consolidate with Oracle Database 12c."We will discuss changes and enhancements to database upgrade, how to move into a multitenant database environment, and new features that make database migration easier and faster than ever. Thank you to our friends at the JPOUG for making this event possible! 

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• Is there a way to create a cmd shortcut for a specific folder on W7 or/and W8?

  - by Hinstein

  Let say i have 3 different folders that i want to access with CMD C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp1\Debug C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp2\Debug C:\Users\Henok\Documents\Visual Studio 2012\Projects\TestApp3\Debug I wonder if there is a way to create 3 different cmd shortcuts to access those directory (folders) individually without changing the default cmd directory location. Forgive me for my broken English, and thanks for your time.

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• Announcing Oracle Enterprise Manager 12c Release 4

  - by Javier Puerta

  Oracle Delivers Latest Release of Oracle Enterprise Manager 12c. Richer Service Catalog for Database and Middleware as a Service; Enhanced Database and Middleware Management Help Drive Enterprise-Scale Private Cloud Adoption. Oracle Enterprise Manager 12c Release 4, available today, lets organizations rapidly adopt Oracle-based, enterprise-scale private clouds. New capabilities provide advanced technology stack management, secure database administration, and enterprise service governance, enabling Oracle customers and partners to maximize database and application performance and drive innovation using self-service IT platforms. The enhancements have been driven by customers and the growing Oracle Enterprise Manager Ecosystem, comprised of more than 750 Oracle PartnerNetwork (OPN) Specialized partners. Oracle and its partners and customers have built over 140 plug-ins and connectors for Oracle Enterprise Manager. Watch Dan Koloski introducing Enterprise Manager 12c Release 4 in this video

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• Announcing Oracle Enterprise Manager 12c Release 4

  - by Javier Puerta

  Oracle Delivers Latest Release of Oracle Enterprise Manager 12c. Richer Service Catalog for Database and Middleware as a Service; Enhanced Database and Middleware Management Help Drive Enterprise-Scale Private Cloud Adoption. Oracle Enterprise Manager 12c Release 4, available today, lets organizations rapidly adopt Oracle-based, enterprise-scale private clouds. New capabilities provide advanced technology stack management, secure database administration, and enterprise service governance, enabling Oracle customers and partners to maximize database and application performance and drive innovation using self-service IT platforms. The enhancements have been driven by customers and the growing Oracle Enterprise Manager Ecosystem, comprised of more than 750 Oracle PartnerNetwork (OPN) Specialized partners. Oracle and its partners and customers have built over 140 plug-ins and connectors for Oracle Enterprise Manager. Watch Dan Koloski introducing Enterprise Manager 12c Release 4 in this video

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• winexit.scr help for windows server 2003

  - by Kabir Rao

  I am trying to implement winexit.scr in a windows terminal server. I want force logoff all "domain\domain users" from this server after 10 minutes through this. All these users along with domain admins login to this terminal server via Remote Desktop. I want to force logoff only for "domain\domain users" not for administrators and domain admin. I have tried the solutions provided in different sites..but it's logoff administrators also. Please help..thanks upfront.

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• Successful su for user by root in /var/log/auth.log

  - by grs

  I have this sorts of entries in my /var/log/auth.log: Apr 3 12:32:23 machine_name su[1521]: Successful su for user1 by root Apr 3 12:32:23 machine_name su[1654]: Successful su for user2 by root Apr 3 12:32:24 machine_name su[1772]: Successful su for user3 by root Situation: All users are real accounts in /etc/passwd; None of the users has its own crontab; All of those users are logged in the machine some time ago via SSH or No Machine - time varies from few minutes to few hours; no cron jobs are scheduled to run at that time, anacron is removed; I can see similar entries for other days and other times. The common part is the users are logged in when it appears. It does not appear during login, but some time afterwards. This machine has similar setup with few others but it is the only one where I see these entries. What causes them? Thanks

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• Reliable router with good VPN and WAN Throughput [closed]

  - by Asdande

  I have 2 cisco rv180 VPN router. These routers are giving me lots of problems. The webpages wont load correctly, slow response to load webpages plus other many issues. I have several cases pending with cisco. I give up on these routers. I would like to know if you guys can recommend me a reliable router for our 3 branches (NY - main, SC and FL). In NY- main office, we have 55 users. In SC branch, 6 users. In Florida we only have 1 (will grow soon). I need a router capable of support: 3 VPNs Site-to-Site connection VPN throughput of at least 40-50 Mbps WAN throughput at least 100 Mpbs and up PPTP Server for at least 5 PPTP users Web filtering - all users need access to internet Good Firewall Port forwarding for FTP Server - able to show the public IPs of FTP users (rv180 cannot do that, just shows me router's LAN interface IP, opened a case with cisco, now escaleted to level 2, still no answer or workaround) Dual WAN ports for balance or backup internet. Gigabit WAN/LAN ports Price between $400-$500 range. I was thinking on the TP-LINK TL-ER6120 or TL-ER6020 according to the review on smallnetbuilder.com http://www.smallnetbuilder.com/lanwan/lanwan-reviews/31983-tp-link-tl-er6020-safestream-gigabit-dual-wan-vpn-router-reviewed but I don't want to make another mistake as I did when I bought the cisco RV180. Thank you in advance,

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• Hacked by our own hosting company!

  - by dazhall

  OK, so our hosting company decided to clone our site and database onto a new serve. Without our knowledge or permission they then edited our code to point to the new database. The old server was left running, still pointing at the original database. The DNS was changed to reflect the new IP address of the server. Obviously during the propagation customers were hitting both the new and old servers, resulting in orders coming in to both databases, sometimes being split between the two. We're now attempting to reconcile the two databases. The question I have is is it still hacking if it was done by your own hosting company?! I'm fairly sure they shouldn't have edited our code! If they had left it as it was the site would have stayed pointed at the original database and we wouldn't be in this mess! I'm thinking that legal advice is need but just wanted to know if anyone had ever come across this situation before?!

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• Starting services in batch file on windows 7

  - by Dima

  I have a fairly simple batch file which does just one thing - "net start myservice". This batch file gets shortcut-ed in a program group by installer so that users can simply click on the icon and get things started (or stopped). All works well in XP for the users with admin rights. But things get hairy on Win7 as the batch need to be run "as administrator" explicitly and often users don't know this. So my question is how to make this friendly? Telling users to right click and run as admin on Win7 and simply click on XP is kind of weird twist. I need a smart automatic simple thingy. I could probably use "runas/user:administrator" in the batch itself, but this "administrator" account might not be available on some machines. I'm looking for a universal solution for installing things like this on any Windows box. Ideas? How would you do this?

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• SQL 2008 managing 2 Instances on single Physical server

  - by Rajeev

  Hi, I need some calrification about managing SQL server 2008. The scenario is as follows: I have One Windows Physical server at Primary site, I want to have Two different applications database on it, so shall I create two Instances on same server or shall have diffenrent server for another database. First Database is for management purpose while second would be used for Reporting purpose. There is a second database at the secondary site, which will be in Passive mode and I intend to connect them through MSCS. Now, can I have both Instances on Single server and both will work fine? The management database will be used more. Please reply soon. Can both Instances have dedicated reources allocated to them?

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• Branding/Restricting a Software by License/Serial

  - by Sid

  I have made a POS System for a client of mine using MS Access Server-Client approach. He asked me to brand his software to allow only a certain "number" of users (cashiers) to access the POS System, and must be determined to the license his client will buy. EX: 10 User License = 10 Cashiers ( not necessarily 10 users, it can be 30 users, shifting) = it means 10 PCs will be installed with the client software I made. How and where do I put the logic that will determine if it is licensed or not. What I have done: I have created a serial key generator using Name. Problem is it can be duplicated once you give than name+serial combination, it would still work. I am counting the number of users logged at a time. This could be problematic as I am using MSAccess and not MSSQL. I have scrapped this idea, He also asked me if I could just put serial+mac address combination. That I could do but he will have a hard time implementing it and selling it if he needs the mac address of every computers to be installed with my POS. I am at lost on what can I do. Would like to ask for tips and suggestions. Thank you.

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• How to allow unprivileged apache/PHP to do a root task (CentOS)

  - by Chris

  I am setting up a sort of personal dropbox for our customers on a CentOS 6.3 machine. The server will be accessible thru SFTP and a proprietary http service base on PHP. This machine will be in our DMZ so it has to be secure. Because of this I have apache running as an unprivileged user, hardened the security on apache, the OS, PHP, applied a lot of filtering in iptables and applied some restrictive TCP Wrappers. Now you might have suspected this one was coming, SELinux is also set to enforcing. I'm setting up PAM to use MySQL so my users in the web application can login. These users will all be in a group that can use SSH only for SFTP and users will be chrooted to their own 'home' folder. To allow this SELinux wants the folders to have the user_home_t tag. Also the parent directory needs to be writable by root only. If these restrictions are not met SELinux will kill the SSH pipe immediately. The files that need to be accessible thru both http and SFTP so I have made a SELinux module to allow Apache to search/attr/read/write etc. to directories with the user_home_dir_t tag. As sftp users are stored in MySQL I want to setup their home dirs upon user creation. This is a problem since Apache has no write access to the /home dir, it's only writable by root since it's required to keep SELinux and OpenSSH happy. Basically I need to let Apache do only a few tasks as root and only within /home. So I need to somehow elevate the privileges temporarily or let root do these tasks for apache instead. What I need to have apache do with root privileges is the following. mkdir /home/userdir/ mkdir /home/userdir/userdir chmod -R 0755 /home/userdir umask 011 /home/userdir/userdir chcon -R -t user_home_t /home/userdir chown -R user:sftp_admin /home/userdir/userdir chmod 2770 /home/userdir/userdir This would create a home for the user, now I have an idea that might work, cron. That would mean the server needs to check for users that have no home every minute, then when creating users the interface would freeze for an average of 30 seconds before the account creation can be confirmed which I do not prefer. Does anybody know if something can be done with sudoers? Or any other idea's are welcome... Thanks for your time!

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