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Hello Janet ,
According to my knowledge the problem appears on the border between Omegamon reports and the data Db2 prepares in the traces. Although OMPE SQLACTIVITY TRACE gives correct time for SYNC operation, unfortunately Omegamon can not generate correct OMPE ACCOUNTING REPORT/TRACE without changes in the traces/IFCIDs .
Today OMPE ACCOUNTING generates misleading reports charging last invoked package with the costs of the COMMIT.
Many sites worldwide base their analisys only on the Accounting because of its simplisity and because it is really tough to analyze SQLACTIVITY TRACE in a very large environment.
Regards,
Pawel Hryb
Thanks for the suggestion. We would like to understand some details. Db2 today writes the following instrumentation for local attached transaction. We believe this should be enough information. Do you need more information for CICS/IMS ? Performance trace IFCID 88/89 (Begin/End of SYNC requests), IFCID 70/71 (Begin/End of commit phase 2). IFCID 3, accounting for local application also report the commit time under QWACAWTE. “
For DRDA, we agree that the commit instrumentation is missing other than commit received in DDF section and accounting trace only reports the commit process as “Force LOG WRITE”. We need to investigate how we can implement this for DRDA, but please confirm the question on the local application.
Thank you.