Joined: 19 May 2004 Posts: 51 Topics: 25 Location: My House
Posted: Wed Aug 10, 2005 7:18 pm Post subject: IMS buffers.
Hi,
Our programs are not written well enough to issue a checkpoint when FW status code is obtained. As a result we are facing many abends with 'FR' status code.
As a quick solution we are planning to increase the Normal Buffer (NBA) and Overflow Buffer (OBA).
1. How to estimate the amount of NBA and OBA required.
2. Is there any system constrain exists for these valuse, will there be a problem if too many jobs with increased values run at a same time?
3. If we ensure that competing jobs run at different times, will it help solving the problem?
Joined: 26 Nov 2002 Posts: 12383 Topics: 75 Location: San Jose
Posted: Thu Aug 11, 2005 6:50 am Post subject:
Quote:
Our programs are not written well enough to issue a checkpoint when FW status code is obtained. As a result we are facing many abends with 'FR' status code.
As a quick solution we are planning to increase the Normal Buffer (NBA) and Overflow Buffer (OBA).
YSMVS,
I suggest that you code an error-handling routine, triggered by the FW status code, that will cause your program to issue SYNC calls, CHKP requests, or SYMCHKP commands as soon as an FW status code is returned to your program. This reduces the total buffer requirement. To avoid receiving the FW status code, issue SYNC or CHKP calls more frequently.
Quote:
1. How to estimate the amount of NBA and OBA required.
2. Is there any system constrain exists for these valuse, will there be a problem if too many jobs with increased values run at a same time?
If you have more jobs trying to increase/allocate buffers , then you would definitely have problem acquiring buffers as all buffers would have been exhausted.
Quote:
3. If we ensure that competing jobs run at different times, will it help solving the problem?
I don't think so ! I also suspect that you will be adding more problems. Try with suggestion of an error-routine which issue SYNC calls.
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