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Subsystem and Transaction Monitoring and Tuning with DB2 11 for z/OS by Yasuhiro Ohmori, Cathy Drummond, Adrian Burke, Felipe Bortoletto, Paolo Bruni

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DRDA, parallelism, and statement cache
In this chapter, we examine accounting for DDF work, query parallelism, capturing information from the statement cache, and performance traces.
The chapter contains the following topics:
20.1 Accounting for DDF work
For most connection types, when we talk about “time in DB2”, we mean class 2 time.
When ...

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