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PI80252: The size of the Java heap grows over time when using the MSGLOG DD.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • If a Liberty server is started using a PROC, and the MSGLOG
    DD is provided on that PROC, the size of the Java heap may
    grow over time.  When the maximum size of the Java heap is
    reached, a java/lang/OutOfMemoryError may be thrown.
    

Local fix

  • 
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty for z/OS                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: The size of the Java heap grows over    *
    *                      time when using the MSGLOG DD.          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    If a Liberty server is started using a PROC, and the MSGLOG DD
    is provided on that PROC, the size of the Java heap may grow
    over time.  When the maximum size of the Java heap is reached, a
    java/lang/OutOfMemoryError may be thrown.  Each message that is
    written to the MSGLOG DD must be converted from its original
    ASCII codepage to EBCDIC.  The results of this codepage
    conversion are being cached, and the cached entries are never
    removed.  Since each message written to the MSGLOG DD is unique,
    there is no need to cache the result of the ASCII to EBCDIC
    conversion.
    

Problem conclusion

  • Code was added to prevent the result of ASCII to EBCDIC
    conversion of messages from being cached.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 17.0.0.2.  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

    PI80252

  • Reported component name

    LIBERTY PROF -

  • Reported component ID

    5655W6514

  • Reported release

    CD0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-04-19

  • Closed date

    2017-04-20

  • Last modified date

    2017-05-08

  • 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 PROF -

  • Fixed component ID

    5655W6514

Applicable component levels

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Platform":[{"code":"PF054","label":"z\/OS"}],"Version":"CD0"}]

Document Information

Modified date:
28 March 2021