PM67249: NO CONVENIENT WAY TO GENERATE A JAVA VIRTUAL MACHINE (JVM) DUMP.

8.5.0.1: WebSphere Application Server V8.5 Fix Pack 1
8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2

APAR status

• Closed as new function.

Error description

• If a hang, memory leak, or other JVM issue in a
  Liberty profile server occurs, there is no convenient way
  to request a Java, heap, or system dump.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty Profile                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: It is not possible to generate a        *
  *                      javacore, heapdump, core, or hprof      *
  *                      file                                    *
  *                      on all operating systems without        *
  *                      specifying flags when starting the      *
  *                      server.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Java virtual machines require on the user to send a QUIT signal
  to the process in order to generate a thread, heap, or system
  dump. This is not possible on Microsoft Windows operating
  systems, particularly when a Liberty server is started in the
  background. Additionally, most virtual machines require
  command-line arguments to be set when starting the process.
  It is not always known when starting a server that the
  diagnostics will be required later.
  

Problem conclusion

• A javadump action was added to the server script, which allows
  thread, heap, and system dumps to be taken at any time while
  the server is running, regardless of the Java virtual machine
  options used to start the server.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.0.1. Please refer to the Recommended Updates page
  for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  LIBERTY PROFILE

• Fixed component ID

  5724J0814

Applicable component levels

• R850 PSY

     UP