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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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Locking, latching, and buffer pool accounting counters
In this chapter, we discuss serialization counters related to suspensions caused by locks and latches. We also discuss buffer pool counters as caused by the application. We include data sharing information.
This chapter contains the following topics:
Locks
Latches
17.1 Lock and latch
The data in a DB2 subsystem can be accessed by many different users at the same time. To ...

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