IBM Support

PH30128: ECLIPSELINK INTERMITTENT CONCURRENTMODIFICATIONEXCEPTION

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APAR status

  • Closed as program error.

Error description

  • EclipseLink throws an intermittent
    ConcurrentModificationException for some @OneToMany
    relationships
    
    Exception:
        Caused by: java.util.ConcurrentModificationException
         at
    java.util.IdentityHashMap$IdentityHashMapIterator.nextIndex(Iden
    tityHashMap.java:734)
         at
    java.util.IdentityHashMap$KeyIterator.next(IdentityHashMap.java:
    825)
         at
    org.eclipse.persistence.internal.sessions.CollectionChangeRecord
    .mergeRecord(CollectionChangeRecord.java:261)
         at
    org.eclipse.persistence.internal.sessions.ObjectChangeSet.mergeO
    bjectChanges(ObjectChangeSet.java:773)
        Caused by: java.util.ConcurrentModificationException
         at
    java.util.IdentityHashMap$IdentityHashMapIterator.nextIndex(Iden
    tityHashMap.java:734)
         at
    java.util.IdentityHashMap$KeyIterator.next(IdentityHashMap.java:
    825)
         at
    org.eclipse.persistence.internal.sessions.CollectionChangeRecord
    .mergeRecord(CollectionChangeRecord.java:261)
         at
    org.eclipse.persistence.internal.sessions.ObjectChangeSet.mergeO
    bjectChanges(ObjectChangeSet.java:773)
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server - Java Persistence API - JPA         *
    *                  2.1 & EclipseLink                           *
    ****************************************************************
    * PROBLEM DESCRIPTION: EclipseLink throws an intermittent      *
    *                      ConcurrentModificationException for     *
    *                      some @OneToMany relationships.          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Exception stack:
    ´´´
    Caused by: java.util.ConcurrentModificationException
    at
    java.util.IdentityHashMap$IdentityHashMapIterator.nextIndex(Iden
    tityHashMap.java:746)
    at
    java.util.IdentityHashMap$KeyIterator.next(IdentityHashMap.java:
    837)
    at
    org.eclipse.persistence.internal.sessions.CollectionChangeRecord
    .mergeRecord(CollectionChangeRecord.java:261)
    at
    org.eclipse.persistence.internal.sessions.ObjectChangeSet.mergeO
    bjectChanges(ObjectChangeSet.java:773)
    at
    org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet.me
    rgeObjectChanges(UnitOfWorkChangeSet.java:492)
    at
    org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet.me
    rgeUnitOfWorkChangeSet(UnitOfWorkChangeSet.java:509)
    at
    org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfW
    ork.writeChanges(RepeatableWriteUnitOfWork.java:469)
    at
    org.eclipse.persistence.internal.jpa.EntityManagerImpl.flush(Ent
    ityManagerImpl.java:878)
    ´´´
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PH30128

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-10-06

  • Closed date

    2020-11-17

  • Last modified date

    2020-11-17

  • 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

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"900"}]

Document Information

Modified date:
18 November 2020