IBM Support

JR32567: IMPROVEMENT OF STACK SPACE UTILIZATION BY OPTIMIZER

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • This APAR is created  to improve the stack space  utilization by
    optimizer so that a large iterative operation could be performed
    with smaller size of the agent stack size
    
    The improvement might  reduce stack space need from 4Meg to
    2.75 - 3Meg  for certain large queries
    

Local fix

  • Increase the agent stack size to avoid stack overflow
    

Problem summary

  • Users Affected : Users running a large query  needing several
    layers of iterations
    
    Problem Description : Please  see APAR text
    
    Problem Conclusion : With this fix the optimizer might
    require lesser stack size in most of the situations.
    

Problem conclusion

  • Problem was first fixed in Version V9.1 Fix Pack 8
    CQ defect#wsdbu00400312
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR32567

  • Reported component name

    DB2 UDB ESE WIN

  • Reported component ID

    5765F4101

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-03-31

  • Closed date

    2009-07-15

  • Last modified date

    2009-07-15

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

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

    JR32568

Fix information

  • Fixed component name

    DB2 UDB ESE WIN

  • Fixed component ID

    5765F4101

Applicable component levels

  • R910 PSY

       UP

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
12 October 2021