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Status Not under consideration
Workspace Db2 for z/OS
Created by Guest
Created on May 25, 2021

Distributed Thread cancelled due to Idle Thread Timeout or MONITOR IDLE THREADS not writing record to SYS1.LOGREC

We noticed that every DB2 distributed thread that is cancelled because:

1) Idle thread timeout value that is specified by Db2 subsystem parameter IDTHTOIN in macro DSN6FAC is exceeded;

or

2) ATTRIBUTE2 value in a row with KEYWORD value MONITOR IDLE THREADS in the SYSIBM.DSN_PROFILE_ATTRIBUTES table, for a profile that monitors the thread is exceeded;

writes a record in LOGREC with ABEND S04E and Reason Code 00E50013.

In certain operational environments, sometimes we have lots of distributed threads falling into IDLE "state" and being cancelled when one of the limits above is exceeded. This causes a lot of records being written to LOGREC.

For certain DB2 environments, we would like to limit the amount of records like these (Abend S04E and RC 00E50013 for distributed threads) being written to

LOGREC or even suppress them. I understand that the writing of these records is not controlled by subsystem parameter SUPERRS today.

We would like that SUPERRS subsystem parameter could be enhanced (or a new zPARM parameter) to manage the writing of SYS1.LOGREC records mentioned

above (produced by distributed threads falling into IDLE "state" and being

cancelled), allowing to limit and/or suppress them.

The advantage is not having a flood of these records being written and offending SYS1.LOGREC file. These several records in general only means that a distributed thread was cancelled. Just a few of them could be relevant to the analysis, but they are repetitive in many cases.

Needed by Date Jun 30, 2022
  • Admin
    Janet Figone
    Sep 2, 2021

    Dear Paulo,

    Thank you for submitting this Db2 for z/OS enhancement request. We have reviewed this request and believe it is a good candidate for the Db2 for z/OS product. However, it does not align within functionality prioritized for delivery within the next 24 months. Therefore, unfortunately, we will not be considering this idea at this time. We will keep it in our inventory however, and may revisit it at a future time.

    Sincerely,

    Db2 for z/OS Team