Waht is BUFNI set to?
At 12:17 PM 7/3/2023, Steve Estle via IBM TechXchange Community wrote:
>Hello Z Community, I'm doing some ZBNA analysis
>(if you haven't tried it - give it a try - great
>insights gleaned). As part of ZBNA findings,...
>
>
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>VSAM Batch LSR with IMS Utility DFSRRC00 - Supported?
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>Jul 3, 2023 1:18 PM
><https: community.ibm.com/community/user/people/steve-estle="">Steve Estle
>
>Hello Z Community,
>
>I'm doing some ZBNA analysis (if you haven't
>tried it - give it a try - great insights
>gleaned). As part of ZBNA findings, we
>indentified one VSAM index receiving ~7M Read
>I/O's in a single job step but the native
>program being run in batch job step is "DFSRRC00" IMS utility as follows:
>
>PGM=DFSRRC00,REGION=8M,PARM=(BMP, xxx(etc.))
>
>In this step is the DD statement for the VSAM
>file. The ~7M I/O activity is all reads on the
>VSAM index which is only 1 track in size. I
>want to apply Batch LSR buffering to this job
>step, but am concerned about using it in a job
>executing this IMS program name.½ Are there
>any concerns in combining batch LSR VSAM
>buffering with IMS program in same batch job step - is this fully supported?
>
>Thanks much,
>
>Steve Estle
>
>
>------------------------------
>Steve Estle ZOS Systems Programmer
>------------------------------
>
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Original Message:
Sent: 7/3/2023 12:38:00 PM
From: Steve Estle
Subject: Combining VSAM Batch LSR with IMS Utility DFSRRC00 - Supported?
Hello Z Community,
I'm doing some ZBNA analysis (if you haven't tried it - give it a try - great insights gleaned). As part of ZBNA findings, we indentified one VSAM index receiving ~7M Read I/O's in a single job step but the native program being run in batch job step is "DFSRRC00" IMS utility as follows:
PGM=DFSRRC00,REGION=8M,PARM=(BMP, xxx(etc.))
In this step is the DD statement for the VSAM file. The ~7M I/O activity is all reads on the VSAM index which is only 1 track in size. I want to apply Batch LSR buffering to this job step, but am concerned about using it in a job executing this IMS program name. Are there any concerns in combining batch LSR VSAM buffering with IMS program in same batch job step - is this fully supported?
Thanks much,
Steve Estle
------------------------------
Steve Estle ZOS Systems Programmer
------------------------------
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