What’s new in statement-level performance metrics
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As I've been visiting various customers and presenting at conferences, I'm finding that there is a lot of interest in our new performance monitoring capabilities in Optim Performance Manager. One of hottest topics in that area is the new statement-level performance metrics. These were significantly enhanced in DB2 LUW 9.7 and are planned for DB2 for z/OS version 10, currently in beta. There are two aspects of this technology that people find exciting:
The histograms can also allow us to easily identify statements that have volatile cost due to data skew. The combination of this function with the Optim Performance Manager's end-to-end monitoring, which allows to account each SQL to the individual workload it originates from (end user, application, client machines etc.), provides a pretty powerful tool. We believe this will be an important new capability in DB2 and our tools, since it holds the promise of allowing us to review performance problems after the fact without having to recreate the problem scenario. That will save all of us a lot of time, since in many cases it isn't easy to reconstruct the conditions that caused the performance problem.