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JR42543: SLOWNESS DUE TO THE PERFORMANCE OF THE MASKING CODE IN DSEXECUTE IN THE PRESENCE OF A LARGE NUMBER OF JOB PARA

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APAR status

  • Closed as program error.

Error description

  • In presence of a large number of job parameters the "masking
    code in DSEXECUTE" damages seriously the performance of
    DSEXECUTE (or "Execute Command Activity" in a job sequence).
    

Local fix

  • Set DS_EXECUTE_NO_MASKING to 1.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of sequence jobs utilising the DSExecute stage
    ****************************************************************
    PROBLEM DESCRIPTION:
    With a large number of job parameters the DSExecute stage
    performed poorly.
    ****************************************************************
    RECOMMENDATION:
    Apply the patch to restore the performance. The original
    implementation made an unnecessarily large number of calls
    to certain routines.
    ****************************************************************
    

Problem conclusion

  • The code to hide encrypted parameters was rewritten to make it
    significantly more efficient. All required information was
    retrieved in two calls to the server rather than processing
    parameters on-by-one.
    

Temporary fix

  • A temporary resolution can be achieved by turning off the code
    which does encrypted parameter masking. This is done by setting
    the environment variable DS_EXECUTE_NO_MASKING
    

Comments

APAR Information

  • APAR number

    JR42543

  • Reported component name

    WIS DATASTAGE

  • Reported component ID

    5724Q36DS

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-13

  • Closed date

    2012-05-08

  • Last modified date

    2012-05-08

  • 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

    WIS DATASTAGE

  • Fixed component ID

    5724Q36DS

Applicable component levels

  • R850 PSY

       UP

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Document Information

Modified date:
11 October 2021