Hi community members.
Could you please share your experience of reducing OMEGAMON overhead?
We use IBM OMEGAMON XE for DB2 PE V5R3M0 with DB2 11, z/OS:02.02.00
OMPE has a lot of monitoring features, but some of them can incur significant overhead.
You can contact me off-list and I can help engage the right people in OMPE development for a review of your settings (PARMGEN).
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Thanks for your reply.
We are not so current with OMEGAMON, our version is V5R3 with RSU 1508. We noticed that when DB2 OMEGAMON is down, some critical CICS transection consumes 7% less CPU.
Is it possible to measure the OMEGAMON overhead without
Most sites do not run Object Analysis all of the time due to high overheads, and so make it available to switch on only when needed for short periods. In addition, the Historical capture features of Omegamon for DB2 can be expensive especially for dynamic SQL. Turning off that feature did lead to significant overhead reduction. I don't have the specifics of the Db2 Customer savings at hand unfortunately, but was worth significant money.
DB2 Application Performance Specialist
CPT Global Ltd