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Status Future consideration
Workspace z/OS
Categories JES2
Created by Guest
Created on Apr 7, 2023

Support JESLOG parameter on job card with the master subsystem

We execute our Netview STCs under the master subsystem rather than under JES2 and they can stay up for months at a time. The JESMSGLG can grow to several million lines which consumes a non-insignificant amount of spool space. We don't need that information and would like to suppress it, since it's also in the system log. 

Idea priority Medium
  • Guest
    Reply
    |
    Apr 18, 2023
    There are multiple ways to specify the JESLOG parameter fo request job id jobs in the current code. The idea of placing a keyword on the job card associated with a request jobid job is not one of them since JES never sees the job card for these job. The following methods can be used:

    First, and most basic, is to use the REQJOBID to specify the JESLOG attributes for all STCs that start under MSTR but then request a JOBID. Information on this can be found here: https://www.ibm.com/docs/en/zos/2.5.0?topic=descriptions-reqjobid-specify-jeslog-characteristics

    If doing this for all request jobid jobs is not what is wanted, then Netview could provide them an option to manage the job log either by supressing it or specify JESLOG values. This is controlled by options in the IEFSSRR request jobid SSOB extention. Netview can specify the fields they want in SSRRLOG. This should be located here but is currently missing https://www.ibm.com/docs/en/zos/2.5.0?topic=20-input-parameters I have sent a request for the books to be updated. The fields of interest are:
    SSRRLOG DS XL5 JESLOG control information
    ORG SSRRLOG
    SSRRLFLG DS B Flags
    SSRRELIG EQU B'10000000' Spin eligible (mutually
    exclusive with SSRRNJBL
    and SSRRNOSP)
    SPACE 1
    **************************************************************
    * *
    * SSRRTIMI, SSRRTIMD and SSRRLINE are mutually *
    * exclusive. If SSRRELIG is on and none of the three *
    * is on, that implies that an operator command can be *
    * used to spin output, but there is no automatic *
    * spinning. It is an error if any of the 3 bits are *
    * on and SSRRELIG is off. *
    * *
    **************************************************************
    SPACE 1
    SSRRTIMI EQU B'01000000' Spin on time interval
    SSRRTIMD EQU B'00100000' Spin on time of day
    SSRRLINE EQU B'00010000' Spin upon line delta
    SSRRNOSP EQU B'00001000' No Spin (mutually
    exclusive with SSRRELIG
    and SSRRNJBL)
    * EQU B'00000111' Reserved for future use
    and must be zero
    SPACE 1
    **************************************************************
    * *
    * SSRRSVAL has one of the following values: *
    * *
    * o 0 if no bit on in SSRRLFLG or just SSRRELIG or *
    * SSRRNOSP is on. *
    * o Increment in minutes if SSRRTIMI on. *
    * Increment must be 10 minutes or more. *
    * o Number of minutes past midnight if SSRRTIMD on.*
    * The range is 0 through 23:59 (23*60+59). *
    * o Line delta if SSRRLINE on. *
    * The range is 500 through 999 million. *
    * *
    **************************************************************
    SPACE 1
    SSRRSVAL DS F Spin value

    JES2 policies would also be a way to do this. The recent (z/OS 3.1) JOB create policy does affect request job id jobs but currently does not currently support modifying JESLOG.