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Error Cannot Find The Pool Manager Reference

Have you configured your data source to do this? The usual design is that if this is that important to you, you better put your WAS on top of MQ server. To troubleshoot this type of problem, you should have access to the administrative console and the SystemOut.log for your application server. When then network come back up, we still receive alot of these messages. http://optimisersonpc.com/error-cannot/error-cannot-resolve-reference-microsoft-vc80-atl.html

Thanks, Aoife The error is: [30/05/05 17:36:34:562 IST] 341c5f5e ConnectionMan E J2CA0020E: The Connection Pool Manager could not allocate a Managed Connection: java.lang.IllegalStateException: Internal Error: cannot find the PoolManager Reference. Try to create the JMS Text Message again. No, continue to question 5. Is the web container thread pool size set too high or is the isGrowable checkbox checked in your configuration? http://www.ibm.com/support/docview.wss?uid=swg21206150

U metioned that "we have built 3 retries in our application framework" .can u please explain me how u build those retries........... No, continue to question 8. Cross reference information Segment Product Component Platform Version Edition Application Servers Runtimes for Java Technology Java SDK Document information More support for: WebSphere Application Server DB Connections/Connection Pooling Software version: 6.0, Yes, the root cause of the problem is that the JNDI lookup of the data source by the application fails.

Also check with your DBA to make sure that the userid and password that you are using are correct for connecting to the database. More details about this scenario and solutions for it are documented in this article. If it occurs for every connection attempt, the root cause of the problem is likely that the data source properties are misconfigured. The call to createQueueConnection() gets a connection from the connection pool and the call to createQueueSession() gets a session from the session pool for that connection.

It is not recommended to cache sessions or connections. Review this technote to resolve the problem. Accept & Close WAS v8.5 > Set up the application serving environment > Administer application servers > Manage application servers Stopping an application server Stopping an application server ends a server http://www.ibm.com/support/docview.wss?uid=swg21247168 The following default values are used: [Resource-ref settings] res-auth: 1 (APPLICATION) res-isolation-level: 0 (TRANSACTION_NONE) res-sharing-scope: true (SHAREABLE) loginConfigurationName: null loginConfigProperties: null [Other attributes] res-resolution-control:

Is the problem that you observe (using a tool such as netstat) more TCP/IP connections than you expect between your application server process and an MQ queue manager? I don't want to go and restart every single WAS when the network or MQ went down. If you are using the WebSphere JMS Provider in V5 (Embedded Messaging), ensure that the userid specified in the J2C authentication alias is also in the user registry. The trace output can show you that a connection leak exists, and it can also show exactly what application code is leaking connections.

  1. Now, in WebSphere Application Server, there is one JMS Session Pool for each JMS Connection that has been defined.
  2. You should see a line like this: ---- Begin backtrace for Nested Throwables com.ibm.mq.MQException: MQJE001: Completion Code 2, Reason 2009 The four-digit number is the reason code.
  3. This section does not include ConnectionWaitTimeoutExceptions or StaleConnectionExceptions, which are covered in subsequent sections.
  4. nope, it's a feature!

Note that the application should close connections in a finally block to ensure that the connections are closed even in error conditions. http://www.mqseries.net/phpBB/viewtopic.php?p=69281&sid=2271447cd68f63d13096f09ddf9a0029 I notice that every now and then my server throws an error and stops one of my message listener ports. Create a new JMS Session. J2CA0106E: A 5.0 DataSource was attempted to be used in a WebModule that was not level 2.3 Yes, the root cause of the problem is that a servlet at the 2.2

Ensure that a J2C authentication alias, containing the correct userid and password, is specified on the data source. http://optimisersonpc.com/error-cannot/peoplesoft-error-cannot-find-sqr.html This way the network interruptions are automatically handled by the channels. not sure if this is the same issue as yours but it is easy enough to try. Claudio Reply to this Reply to original maybe try this?[ Go to top ] Posted by: Nancy Hefner Posted on: August 07 2009 13:40 EDT in response to Claudio Augusto Teixeira

allocateMCWrapper(ConnectionManager.java:1007) at com.ibm.ejs.j2c.ConnectionManager. Find the last linked exception. Review the documentation on how to handle the StaleConnectionException and implement this in your application code. navigate here No, then the root cause of the problem is that connections are "in use" for too long before returning to the free pool.

Yes, the root cause of the problem is likely that the firewall is timing out and dropping connections between the application server and the backend. WebSphere Application Server can determine that a connection is stale based on the exception that is returned by the backend when trying to establish a connection. The longer that a connection remains in the pool, the more susceptible it is to becoming stale.

If you are testing a connection to a Microsoft SQL Server database, does the following error occur?

J2CA0075W: An active transaction should be present while processing method allocateMCWrapper. Are there any network or database issues at the time that the problem occurs? If it is a messaging system or an enterprise information system, continue to question 6. Correct the problem with the network or the database server.

If the JMS connection is closed, but the JMS session is not closed (for example, the JMS session might be cached), this problem might occur. No, the problem can probably be resolved by configuring the data source to pretest connections before they are allocated to the application. You would want to forward / deploy your JMS beans only on one or two servers. http://optimisersonpc.com/error-cannot/error-cannot-resolve-reference-microsoft-vc90-debugcrt.html If it occurs intermittently or only after a certain time period has elapsed, continue to question 4.

Join us to help others who have the same bug. Follow the steps in the Troubleshooting JDBC connections section. Applications should follow the "get/use/close" pattern and close all connections immediately after finishing using them. Does the error message and the accompanying SQLException indicate a problem with the user ID and password that are used to connect to the database?

This should reveal the root cause of the problem. Maybe you are suffering from net collisions in an environment were traffic is exeptionally high. This includes java.sql.SQLExceptions and WebSphere Application Server messages that begin with DSRA. Resolving the problem To resolve this problem, the application must close the JMS session before it closes the JMS connection.

If the problem does not clear up until you restart the application server, continue to question 5. com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionM anager.java:696) . When this occurs, the connection manager cleans up the connection, purges its session pool, and sets the PoolManager Reference to null. There is no graceful way to put it.

This is a case were more bucks to pay means less worries...' Now you are talking about a bunch of WAS ... You should conduct thorough load testing to find the optimal value for Maximum Connections. Read about the Services utility in the Windows online help. Read the topic about the WASService command for information about adding and removing Windows services. If it remains in the pool for the Unused Timeout number of seconds (configured in the connection pool settings), the connection is discarded from the pool.

When an application tries to use a connection it has previously obtained, the connection is no longer valid. Finally, if none of the previous troubleshooting steps helped to resolve the problem, continue to the MustGather for database connection and connection pooling problems. ExtendedMessage: RawData: Back to top jefflowrey Posted: Mon Aug 16, 2004 7:02 am    Post subject: Grand PoobahJoined: 16 Oct 2002Posts: 19981 What happens when you restart WAS?_________________I am *not* the model This doesn't necessarily indicate a problem, but you should review this technote for more details.

To do this, the Connection Manager tries to access the JMS Session Pool being used by this thread, and finds that it is no longer accessible.

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