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Improve DB2 DBD pool processing to prevent full and provide better diagnostics

Improve DB2 DBD pool processing by
1) providing a dynamic increase process to help prevent full conditions (and therefore thread failures)
2) providing better diagnostics to identify the DBD's consuming the most non-stealable space. Optionally - identify the thread activity causing the non-stealable usage.

Some further ideas on details:
* add several zparms to control this enhancement
- zparms for warning and problem EDM DBD non-stealable usage levels
- at warning - provide a message alert and identify the top consuming DBD
- at problem - provide a message alert, take a diagnostic dump, and dynamically increase EDMDBD size, later this size can be reduced when no longer needed.
- zparms to control the EDMDBD size increase
- zp to control incremental space increase amount
- zp to control the number of times to allow an increase
  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Dec 15 2018
  • Delivered
Idea Priority Medium
Client Name Fidelity Investments
  • Attach files
  • Admin
    Janet Figone commented
    28 Jul 07:51pm

    We are pleased to inform you that requirement number 1 (the new instrumentation to monitor EDM pool portion) has been delivered in APARs PH09377 and PI91054.

    Additionally, we would like to ask you to submit a new Idea for requirement number 2 (providing better diagnostics to identify the DBD's consuming the most non-stealable space. Optionally - identify the thread activity causing the non-stealable usage.)

    Thank you,

    Db2 for z/OS Development team

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