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JR54009: OUTOFMEMORY ERRORS WHEN MIGRATING SEVERAL MILLION INSTANCES DURING SNAPSHOT MIGRATION.

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APAR status

  • Closed as fixed if next.

Error description

  • OutOfMemory errors when migrating several million instances
    during snapshot migration.
    
    When migrating several million instances it may require
    upwards of 3-4 GB of heap space leading to Out of Memory errors
    if the JVM is not large enough.
    
    Part of this will be an instance ID array similar to this:
    1,397,526,832 (24.56%) [24] 1 java/util/ArrayList 0x7003c0db8
    |- 1,397,526,808 (24.56%) [38,780,464] 7,555,066 array of
    java/lang/Object 0x74dd3b0f0
       |- 256 (0%) [24] 1 java/lang/String 0x725169690
       |- 240 (0%) [24] 1 java/lang/String 0x728b46340
       |- 240 (0%) [24] 1 java/lang/String 0x72fda64d0
       |- 240 (0%) [24] 1 java/lang/String 0x72a8db910
       |- 240 (0%) [24] 1 java/lang/String 0x727abc780
       |- 240 (0%) [24] 1 java/lang/String 0x729b87000
    

Local fix

  • Increase the heap size until the migration can succeed.
    

Problem summary

  • When you migrate a large number of inflight process instances
    between snapshots, you might receive an OutOfMemory error that
    might cause the JVM to fail.
    
    
    PRODUCTS AFFECTED
    IBM Business Process Manager (BPM) Advanced
    IBM BPM Standard
    IBM BPM Express
    
    LOCAL FIX -
    None
    
    
    PROBLEM SUMMARY
    No additional information is available.
    
    PROBLEM CONCLUSION ?
    The fix is available for an IBM BPM V8.5.6.0 cumulative fix that
    uses heap memory more efficiently and does not retain as much
    memory at a time.
    
    To determine whether the cumulative fix is available and
    download it if it is, complete the following steps on Fix
    Central:
    
    1. Select IBM Business Process Manager with your edition from
    the product selector, the installed version to the fix pack
    level, and your platform, and then click Continue.
    2. Select Text, enter ?cumulative fix?, and click Continue.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    JR54009

  • Reported component name

    BPM ADVANCED

  • Reported component ID

    5725C9400

  • Reported release

    855

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-08-10

  • Closed date

    2015-12-09

  • Last modified date

    2015-12-09

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

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

Fix information

Applicable component levels

  • R856 PSY

       UP

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Document Information

Modified date:
09 December 2015