DB2 9 & 10 for z/OS Overview

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Migration Planning WorkshopIn Memory Workfiles– DB2 10 supports simple predicate evaluation. Thisenhancement reduces the CPU time for workloads thatexecute queries that require the use of small workfiles– Available in CM mode, no REBIND needed208© 2011 IBM Corporation
Migration Planning Workshop1 MB Page Size (Frame size)• DB2 takes advantage of the new 1 MB page size onthe z10 and later• Specify PGFIX=YES to get 1 MB page size in yourbuffer pools• Must be backed by real storage• Must allocate space above the bar with LFAREAparm in IEASYSxx in Parmlib• Potential for significant performance improvements• Using the 1 MB page size will enable efficiencies inthe hardware209© 2011 IBM Corporation
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DB2 9 & 10 for z/OS Overview

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