PH46751: MEMORY LEAK EXECUTING ECLIPSELINK BATCH QUERIES

APAR status

• Closed as program error.

Error description

• Starting in WebSphere release 9.0.5.11, executing JPA queries
  with the Query Hint "eclipselink.batch" enabled, will cause a
  memory leak. The contents of a java Map
  "org.eclipse.persistence.queries.BatchFetchPolicy.dataResults"
  will grow in size each time the query is executed.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server - Java Persistence API -             *
  *                  EclipseLink                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Eclipselink @BatchFetch API contains    *
  *                      a memory leak in BatchFetchPolicy.      *
  *                      This is a regression fix for PH41630.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  APAR PH41630 contained a fix to
  org.eclipse.persistence.queries.BatchFe
  tchPolicy that enabled BatchFetchPolicy.clone() to endlessly
  add references of itself to a Map object every time a query is
  executed. This Map eventually fills up with references and an
  OutOfMemoryException will occur.
  

Problem conclusion

• The fix for this APAR changes the EclipseLink implementation
  and involves an update to the third-party source. See
  https://github.com/eclipse-ee4j/eclipselink/issues/1245
  
  This fix is currently targeted for WebSphere Application
  Server 9.0.5.13 and WebSphere Liberty 22.0.0.8. For more
  information, see 'Recommended Updates for
  WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels