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  • Internet connection is very slow

    - by ThanujJA
    I use GSM onnection to surfe internet. Before I move to ubuntu I used windows 7 OS. It gives me good speed with GSM connection (100 kbps) But now ubuntu gives me very slow speed.(2-3 kbps) Now it make difficult to use GSM connection. In my country (Sri Lanka) mobile brodbrand servises are very expensive so I cant move to onother one. If I use GSM connection they gives me free data (Airtel connection) So it is most valuable reason for me to use GSM connection. Please anybody help me to speed up my network. Thanx

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  • Specification of Extended Properties in OleDb connection string?

    - by Monty
    At the moment I'm searching for properties for a connection string, which can be used to connect to an Excel file in readonly mode. Searching Google gets me a lot of examples of connection strings, but I can't seem to find a specification of all possibilities in the 'Extended Properties' section of the OleDb connection string. At the moment I've this: Provider = Microsoft.Jet.OLEDB.4.0; Data Source = D:\Data\Customers.xls; Extended Properties = 'Excel 8.0; Mode=Read; ReadOnly=true; HDR=Yes'; However... I've composed this by examples. So questions: 1. What is a decent source for OleDb Connection String documentation/reference? 2. Is the above connection string indeed connecting to the Excel file in readonly mode? Thanks!

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  • Sybase ODBC connection String with .net

    - by nitinkhanna
    Hi, I am having SYBASE 12.5 install on my server as well as my PC, I am unable to get the correct connection string. I have used the connectionstrings.com but unable to get the correct one. After runnig and making the connection Driver={Sybase ASE ODBC Driver};srvr=server_name;database=database_name;UID=user_name;PWD=pass; and some other combination of thic connection string I am getting the Datasource ="" Driver ="" DataBase="" ServerVersion = Invalid Operation. Connection is closed What am I suppose to correct in that. Please help. Thanks

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  • Wired connection stops working suddenly

    - by user90950
    I have Ubuntu 12.04.I was downloading something via aria..and then it suddenly stopped..no connection to Internet. I tried to ping the host but no reply..also tried to ping the route 192.168.250.1 but no reply got a message saying 'Ubuntu 12.04 has experienced internal error'. I restarted system but nothing is sorted out. The wired connection 'establishes' but I am not able to use Internet or ping either to host/route/8.8.8.8. The wireless is working fine and it does connect to Internet. I have a static IP address for wired connection and it does connect to Internet on Windows OS installed on this same Laptop with same IP settings.. please suggest how do i get my wired connection start working properly again..

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  • Cable connection takes a lot to establish

    - by user162237
    I've just installed Xubuntu on my computer. It's all OK, but I have a problem with the internet connection: when I boot the PC and I login into Xubuntu it says to me "Cable connection disconnected" or "No cable connection". After a while (like 40 seconds) it connects to the internet and then I'm able to surf the net. I was wondering: why it takes so long to establish a connection? I had no problems of this kind on Windows or other distributions. EDIT: here are some outputs: http://pastebin.com/8nWFC5BV

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  • Scope of Connection Object for a Website using Connection Pooling (Local or Instance)

    - by Danny
    For a web application with connection polling enabled, is it better to work with a locally scoped connection object or instance scoped connection object. I know there is probably not a big performance improvement between the two (because of the pooling) but would you say that one follows a better pattern than the other. Thanks ;) public class MyServlet extends HttpServlet { DataSource ds; public void init() throws ServletException { ds = (DataSource) getServletContext().getAttribute("DBCPool"); } protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException { SomeWork("SELECT * FROM A"); SomeWork("SELECT * FROM B"); } void SomeWork(String sql) { Connection conn = null; try { conn = ds.getConnection(); // execute some sql ..... } finally { if(conn != null) { conn.close(); // return to pool } } } } Or public class MyServlet extends HttpServlet { DataSource ds; Connection conn;* public void init() throws ServletException { ds = (DataSource) getServletContext().getAttribute("DBCPool"); } protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException { try { conn = ds.getConnection(); SomeWork("SELECT * FROM A"); SomeWork("SELECT * FROM B"); } finally { if(conn != null) { conn.close(); // return to pool } } } void SomeWork(String sql) { // execute some sql ..... } }

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  • Linux udev persistent net rule

    - by Anonymous
    I have a Linux system (Slackware Linux 13.0) with two network interfaces. Let's call them NIC0 and NIC1 My goal is to make NIC0 to appear as eth0 in the system. I know this can be achieved via udev rules that map network aliases to MAC addresses of network interfaces. In Slackware Linux the file /etc/udev/rules.d/70-persistent-net.rules contains such rules. The trickiest part of my problem is that I need to fake the MAC address of NIC0. I know I can dynamically change the MAC addres of a network interface with the command: ifconfig eth0 hw ether <new MAC address> Do you see the problem? This supposes that the network interfaces are already set up. So my question is: If I would have an udev rule for NIC1(the one that shall go up as eth1, with its original MAC address), would it be enough for the system to bring the other network interface (NIC0) as eth0 by default? This way I could change its MAC address later, after the udev machinery completes and the network aliases are brought up.

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  • bradford persistent agent login not coming up.

    - by alex
    Wired connection. Desktop. It downloads and installs fine but at the point where the login is supposed to pop up. Nothing happens. Bradford says I have normal network access and it never shows it scanning. It just installs and does nothing. I have all of the updates and everything Bradford needs. And I've used the internet at this dorm before witb this computer. Tried reinstalling.disabling my firewall. Any advice would be appreciated

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  • Wired Network not working on Ubuntu 11.10 + Strange Behavior with Manual Conf

    - by Mauricio Cruz
    I'm new to Ubuntu - to be honest this is my very first day trying it... and I've already spent hours trying to make my wired connection work. I've been using this wired network with Windows and OSX, and in both systems I also had some trouble trying to connect in the past (and the troubleshooters did their magic and helped me get connected). Today, this is what I got: I'm running Ubuntu 11.10; ifconfig: eth0 Link encap:Ethernet HWaddr 78:2b:cb:c3:bf:8f UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:1 errors:0 dropped:0 overruns:0 frame:0 TX packets:343 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:70 (70.0 B) TX bytes:63273 (63.2 KB) Interrupt:20 Memory:e2e00000-e2e20000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1859 errors:0 dropped:0 overruns:0 frame:0 TX packets:1859 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:149368 (149.3 KB) TX bytes:149368 (149.3 KB) wlan0 Link encap:Ethernet HWaddr 10:0b:a9:82:55:c0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:15484 errors:0 dropped:0 overruns:0 frame:0 TX packets:16871 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:12048377 (12.0 MB) TX bytes:2677679 (2.6 MB) I also have some information from Windows ipconfig /all that I ran at my friend's machine Ipv6 Address: <address> preferential Ipv4 Address: 172.26.65.23 <preferential> Netmask: 255.255.254.0 Default Gateway: 172.26.64.1 DHCP Server : <address> DNS Servers : <address> DNS Suffix : <suffix> The weird thing is that I've tried to configure everything manually, using "Network Connections". When I add everything inside IPv4 Settings, the connection is finally successful, but only for 4~5 seconds before getting disconnected again... Update:I just changed the Connection Method to "Local-Link Only", and the same described above happens: At first, it says "Connection Stablished", but after a few seconds, the wired network gets disconnected. I hope someone can help me get connected! Thanks!

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  • php connection pooling mysql

    - by coool
    Hi, I am planning to use MYSQL. Is there a connection pooling extension available. or what is the normal practice for connection. is this the one used in every where... mysqli_connect("localhost", "xxx", "xxx", "test"); Do people use just normal msql_connect or pconnect..? how better is pconnect and what setting should I do for PConnect.... THnks

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  • Uses of persistent data structures in non-functional languages

    - by Ray Toal
    Languages that are purely functional or near-purely functional benefit from persistent data structures because they are immutable and fit well with the stateless style of functional programming. But from time to time we see libraries of persistent data structures for (state-based, OOP) languages like Java. A claim often heard in favor of persistent data structures is that because they are immutable, they are thread-safe. However, the reason that persistent data structures are thread-safe is that if one thread were to "add" an element to a persistent collection, the operation returns a new collection like the original but with the element added. Other threads therefore see the original collection. The two collections share a lot of internal state, of course -- that's why these persistent structures are efficient. But since different threads see different states of data, it would seem that persistent data structures are not in themselves sufficient to handle scenarios where one thread makes a change that is visible to other threads. For this, it seems we must use devices such as atoms, references, software transactional memory, or even classic locks and synchronization mechanisms. Why then, is the immutability of PDSs touted as something beneficial for "thread safety"? Are there any real examples where PDSs help in synchronization, or solving concurrency problems? Or are PDSs simply a way to provide a stateless interface to an object in support of a functional programming style?

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  • Network connection fails when downloading data

    - by Guus
    In the past few weeks, I've noticed my network connection becoming unstable while downloading files. I'm not sure how to diagnose this issue. I've found that my network connections appear to be temporarily unresponsive (for periods up to a minute or so) while I'm downloading a file (that's large enough to not be downloaded instantly). The problem occurs when downloading data through a webbrowser, but also when using SCP to download data from a remote location. During the period in which network connections are unresponsive, every resource that I try to access over the network is unavailable. This includes: The download itself (SCP reports a 'stalled' download) Web pages (won't load - browsers report 'resource unavailable') SSH sessions (CLI freezes) VPN connections (connections terminate) IM client connections (client starts reconnection attempts) ... (everything is pretty much dead) I've noticed that during such a period, I cannot even access the (web-based) administrative console of the router on my LAN at home (although it remains reachable for other devices). The problem occurs when connected to my home network, but also when I'm in the office. Other devices than my laptop are not affected. Given the above two characteristics I assume the problem cause lies within my laptop, not the network infrastructure. I'm running Ubuntu 11.10. Apart from applying automatic updates from Ubuntu, I can't think of a change that I applied to the OS that could have started the problems. I'm absolutely positive that this issue did not occur up to a few weeks ago (as it's very noticeable, and only started to annoy me in the last few days). When the problem occurs, applications that make use of a network connection fail visibly (I get popups telling me that a VPN connection is broken, for instance). The network manager does not report any issues related to my wifi-connection though. Help?

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  • Internet connection lost for browser but still there for transmission

    - by Ashu2982
    I brought Dell Inspiron N5050 few months back. from day 1 i am getting problem with wired connection, i am able to use web browser for few minutes then all of the sudden i lost internet connection but i don't know why transmission is still able to download torrent from internet. today i installed steadyflow download manager and i see it is also downloading fine but beside these everything fails to connect to internet. one more thing internet connection is recovered automatically after few minutes. But this problem occurred repeatedly I have reinstalled ubuntu 12.04 three times, but problem is still there

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  • Using Linux as guest on vmware and sharing connection with windows vista

    - by mike
    I been trying for weeks with vmwware player, now d/l vmwware work station 7, Have a laptop with one built in modem and a usb modem I bought, It works great switching it over from host to use in ubuntu to connect to the net, now when I use that modem from the host to connect online I have no trouble getting ubuntu to share the internet connection, But tried with NAT bridge host and all to get it to work from ubuntu to share the internet connection to windows vista, the host, I know it should work if it works the other way around, I tried setting up my wlan0 eht0 and eth1 to the correct IP can get both systems to notice each other by name and ip, but cant get them to share the connection from guest to host, I've tried iptables and all as well, Can someone please help me out with this? I am sure It is something something I'm over looking, Thanks in advance

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  • DB2 Driver Connection Hanging in Glassfish Connection Pool

    - by Ant
    We have an intermittent issue around the DB2 used from a Glassfish connection pool. What happens is this: Under situations where the database (DB2 on ZOS) is under stress, our application (which is a multi-threaded application using connections to DB2 via a Glassfish connection pool) stops doing anything. The following are observed: 1) Looking at the server using JConsole, we can see a thread waiting indefinitely in the DB2 driver's getConnection() method. We can also see that it has gained a lock on a Vector within the driver. Several other threads are also calling the getConnection() method in the driver, and are hanging waiting for the lock on the Vector to be released. 2) Looking at the database itself, we can see that there are connections from the Glassfish server open and waiting to be used. It seems that there is some sort of mismatch between the connection pool on Glassfish and the connections actually open to DB2. Has anyone come across this issue before? Or something similar? If you need any more information that I haven't provided, then please let me know!

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  • Connection Strings between Web Application and SQL Server

    - by Raven Dreamer
    Greetings. I'm writing a web application that is supposed to connect to a SQL Server database; the connection is formed from the following database string: <add key="DatabaseConnectionString" value="server=DEVPC1\SQLEXPRESS;uid=USERID;pwd=PASSWORD;database=DATABASE"/> However, whenever I try and run the web application, I get a connection error, specifically: An error occurred attempting this login: Login failed for user 'USERID'. Any suggestions on how to go about debugging this? I'm not really familiar with SQL, so any suggestions would be greatly appreciated.

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  • Persistent PuTTY sessions for multiple windows

    - by Tgr
    I'm working in various Linux environments through PuTTY connections which break from time to time. I'm looking for a solution to make the PuTTY windows persist (e.g. if I was editing a file, then after reconnecting I should be in the same editor with the same file open at the same place), with the following requirements: it shouldn't require any manual setup at the beginning of the session or after reconnection (I don't want to type in screen or anything like that) I have several windows open to the same machine with the same user, which tend to disconnect at the same time the number/role of windows is not constant (it's not like I have an mc window, a mysql window and a "script runner" window; sometimes I use one window for search or for SVN commands, other times I need several at the same time) sometimes I need to change the properties of the windows for a task (large window for grepping/editing, small windows because I need to see two of them at the same time, red background because I am modifying the live database in MySQL etc), so I need to get the same console back in the same window after a reconnect Is there a way to achieve this? I suppose I should use screen or something equivalent, but how does it know which window I am reconnecting from? Is there some way to pass a unique window identifier to the shell from PuTTY?

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  • Cannot establish Wired connection on Acer Aspire 5930G

    - by drakos46
    I use an Acer Aspire 5930G, dual booted with Windows 7 and Ubuntu 13.10. My problem is that i cannot establish wired connection on my ubuntu. Wireless connection works in both of my OSs but the Wired connection does not, only on the Ubuntu. I have already tried the common fix: echo on | sudo tee /sys/class/net/eth0/device/power/control but without any results. Any ideas? eth0 Link encap:Ethernet HWaddr 00:1d:72:c2:21:a5 inet6 addr: fe80::21d:72ff:fec2:21a5/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:945 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:204318 (204.3 KB) Interrupt:16 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:7241 errors:0 dropped:0 overruns:0 frame:0 TX packets:7241 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:645874 (645.8 KB) TX bytes:645874 (645.8 KB) wlan0 Link encap:Ethernet HWaddr 00:16:ea:57:7b:cc inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::216:eaff:fe57:7bcc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19937 errors:0 dropped:0 overruns:0 frame:0 TX packets:16933 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:10877245 (10.8 MB) TX bytes:3131378 (3.1 MB) 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8071 PCI-E Gigabit Ethernet Controller (rev 16)

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  • Create an ad-hoc connection that looks like a wifi connection from a router

    - by James
    I have a Vizio tablet (running a modified version of Android 2.3.2) which, for some reason or another, refuses to list Windows ad-hoc wifi connections on it's wifi connection screen. It can connect to wifi networks served from a normal router, but the wireless bit of my home router is broken, so I'd like to share the internet connection through my laptop's wifi card until the new router arrives. Is it possible to create an ad-hoc network in Ubuntu that looks like a normal wireless network to my tablet?

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  • Avoiding connection timeouts on first connection to LocalDB edition of SQL Server Express

    - by Greg Low
    When you first make a connection to the new LocalDB edition of SQL Server Express, the system files, etc. that are required for a new version are spun up. (The system files such as the master database files, etc. end up in C:\Users\<username>\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\LocalDBApp1) That can take a while on a slower machine, so this means that the default connection timeout of 30 seconds (in most client libraries) could be exceeded. To avoid this hit on the...(read more)

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  • Android XML Preference issue. Can't make it persistent

    - by Budius
    I have a very simple activity just to show the preference fragment: public class PreferencesActivity extends Activity { Fragment frag = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); FragmentTransaction ft = getFragmentManager().beginTransaction(); if (frag == null) { // If not, instantiate and add it to the activity frag = new PrefsFragment(); ft.add(android.R.id.content, frag, frag.getClass().getName()); } else { // If it exists, simply attach it in order to show it ft.attach(frag); } ft.commit(); } private static class PrefsFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preferences); } } } and preferences.xml with persistent to true: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:enabled="true" android:persistent="true" android:title="@string/settings" > <EditTextPreference android:dialogTitle="@string/dialog_ip" android:negativeButtonText="@android:string/cancel" android:persistent="true" android:positiveButtonText="@android:string/ok" android:title="@string/ip" /> </PreferenceScreen> if I open the EditTextPreference, write something, close the dialog and open it again. The value is still there. But that's it... if I click the Back button, and enter the again on the preferences screen, I already lost what was written. If you exit the application also doesn't save. Am I missing something here? Running on: Android 4.0.3 Asus TF300

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  • Setting primary internet connection and network on notebook

    - by Francois
    I have installed Ubuntu on a notebook that I have configured to connect to the internet using an Iburst USB modem. This works 100% after a bit of configuring. I now have a desktop pc that I have installed ubuntu on, and would like to connect the two with a router. I bought a router with wifi, and would like to connect my notebook to the other computer using wifi, while still keeping the internet working with the usb modem. The problem is that as soon as the wifi connect, the internet connection dies. Is there a way to force ubuntu to get internet access through the usb modem, but use wifi to connect to the network? I am pretty new to ubuntu so any help would be appreciated. I also have a samsung galaxy tab that I would like to connect to the internet through usb modem via the wifi, so is there also a way to share that internet connection with the other computers on the network? Thanks in advance.....

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  • Tornado Web & Persistent Connections

    - by Engrost
    How can I write Http server in TornadoWeb that will support persistent Connections. I mean will be able to receive many requests and answer to them without closing connection. How does it actually work in async? I just want to know how to write handler to handle persistent connection. How actually would it work? I have handler like that: class MainHandler(RequestHandler): count = 0 @asynchronous def post(self): #get header content type content_type = self.request.headers.get('Content-Type') if not content_type in ACCEPTED_CONTENT: raise HTTPError(403, 'Incorrect content type') text = self.request.body self.count += 1 command = CommandObject(text, self.count, callback = self.async_callback(self.on_response)) command.execute() def on_response(self, response): if response.error: raise HTTPError(500) body = response.body self.write(body) self.flush() execute calls callback when finishes. is my asumption right that with things that way post will be called many times and for one connection count will increase with each httprequest from client? but for each connection I will have separate count value?

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