WebLogic database migration UI output displays a java.lang.NullPointerException in RSA Identity Governance and Lifecycle
Originally Published: 2017-01-11
Article Number
Applies To
RSA Product/Service Type: Enterprise Software
Platform: WebLogic
Issue
The aveksaServer.log contains the following:
01/11/2017 16:53:28.558 ERROR ([STUCK] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)') [MainManager]
java.lang.NullPointerException
at com.aveksa.migration.jdbctool.CheckDatabase.followOutput(CheckDatabase.java:2589)
at com.aveksa.migration.jdbctool.CheckDatabase.handleRequest(CheckDatabase.java:2342)
at com.aveksa.gui.core.ACMManager.checkHandleRequest(ACMManager.java:62)
at com.aveksa.gui.core.MainManager.handleRequest(MainManager.java:142)
at com.aveksa.gui.core.MainManager.doGet(MainManager.java:128)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
The stdout.log contains the following messaging:
<Jan 11, 2017 5:24:53 PM CET> <Error> <WebLogicServer> <XXX-000337> <[STUCK] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'
has been busy for "661" seconds working on the request "Http Request Information: weblogic.servlet.internal.ServletRequestImpl@4f1ceb6c[GET /aveksa/main]
", which is more than the configured time (StuckThreadMaxTime) of "600" seconds in "server-failure-trigger". Stack trace:
java.lang.Thread.sleep(Native Method)
com.aveksa.migration.jdbctool.CheckDatabase.followOutput(CheckDatabase.java:2597)
com.aveksa.migration.jdbctool.CheckDatabase.handleRequest(CheckDatabase.java:2342)
com.aveksa.gui.core.ACMManager.checkHandleRequest(ACMManager.java:62)
com.aveksa.gui.core.MainManager.handleRequest(MainManager.java:142)
com.aveksa.gui.core.MainManager.doGet(MainManager.java:128)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
Cause
In this case the WebLogic Server Stuck Thread Max Time was set to 600 seconds, which is the default, and the process thread was inactive for longer than 600 seconds. Note the error occurred after 661 seconds of inactivity.
Resolution
Please note you may want to set this value temporarily for a database migration and set it back to the normal value once the migration has completed. Normal is based on current site requirements. The WebLogic default value is 600.
Workaround
- Refresh the browser window when the null pointer exception occurs. This causes the thread to activate and continue logging information.
- Alternatively, tail the migrate.log to monitor migration progress.
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