IBM Support

PM12927: OPEN JPA MEMORY LEAK

Fixes are available

7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for AIX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for HP-UX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for IBM i
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Linux
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Solaris
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Windows
7.0.0.13: Java SDK 1.6 SR8FP1 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Applications utilizing Java Persistence API (JPA) extended
    persistence context may experience OutOfMemoryErrors if
    their stateful session beans time out rather than being
    removed normally.
    .
       The java heapdump will show
    Number of leak suspects 6
    
    2,030,915,088 (96%) [56] 81 class
    mycom/gov/sdp/tesct/jpa/mycomApp
    
    0xbc42748
     1,865,327,568 (88%) [56] 30 class
    org/apache/openjpa/enhance/PCRegistry
    
    0xb55f070
      1,865,256,824 (88%) [48] 1 java/util/LinkedList 0x2aaab08a0d50
       1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
    0x2aaab08dcd70
    
    1,865,327,568 (88%) [56] 30 class
    org/apache/openjpa/enhance/PCRegistry
    
    0xb55f070
     1,865,256,824 (88%) [48] 1 java/util/LinkedList 0x2aaab08a0d50
      1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
    0x2aaab08dcd70
       1,865,256,680 (88%) [48] 3 java/util/LinkedList$Entry
    0x2aab29f53f88
        1,865,131,736 (88%) [48] 3 java/util/LinkedList$Entry
    0x2aab28e327b0
        124,896 (0%) [280] 26
    org/apache/openjpa/jdbc/meta/MappingRepository
    
    0x2aab29ed3ac0
        1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
    0x2aaab08dcd70
       48 (0%) [48] 3 java/util/LinkedList$Entry 0x2aaab08e6fc8
    
    The heapdump shows that 1800m of the 2G heap is being consumed
    by a LinkedList array created by
    org/apache/openjpa/enhance/PCRegistry.
    The objects in the linked list array are of type
    org/apache/openjpa/jdbc/meta/MappingRepository.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server V7.0 using Java Persistence API      *
    *                  (JPA) Extended Persistence Context          *
    ****************************************************************
    * PROBLEM DESCRIPTION: Applications using JPA extended         *
    *                      persistence context may experience Out  *
    *                      of Memory issues.                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    JPA Entity Managers are associated with a Stateful Session
    Bean instance.   If these SFSB instances timeout prior to the
    Entity Manager instance being closed they are not properly
    cleaned up and will not be garbage collected.  Over time this
    can cause OutOfMemory and potentially other issues.
    

Problem conclusion

  • The EJBContainer code that functions when timeouts occur has
    been fixed to clear out the Entity Manger references to the
    Stateful Session Bean instances.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 7.0.0.13.  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 number

    PM12927

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-04-22

  • Closed date

    2010-05-21

  • Last modified date

    2012-11-07

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R700 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM12927

Modified date: 07 November 2012