DB2 9 & 10 for z/OS Overview

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Migration Planning WorkshopDB2 10 Sample Performance Improvements• DB2 10 CMx with REBIND– Run time CPU reductions 5% - 10%– 1 MB page size 0% - 4% z10, z196– Page fix buffers 0% - 8% since V8– Release deallocate 0% - 15% short trans, batch– Virtual storage constraints 0% - 5% memory, latches– Data sharing fewer members 1% for each 2 members– Insert 0% - 40% high volume insert– Predicate evaluation 0% - 60% complex predicates– Increased use of zIIP 0% - 3% IO, RUNSTATS, parallelism– Utilities (from V8) 3% - 20%• DB2 10 NFM– Improved dynamic SQL cache 0% - 20% literals– Access: hash, index include 0% - 5% access improved4© 2011 IBM Corporation
Migration Planning WorkshopDB2 10 Performance...• A beta customer shared some numbers @ IOD 2010JDBC DistributedapplicationDB2 Data Sharing• Another beta customer (V8 to V10) shared:– Average 5 – 9% CPU reduction– Some workloads achieved a 30% CPU reduction– REORGs elapsed times improved20 concurrent LOADs10M rows per jobSHRLEVEL NONE5© 2011 IBM Corporation
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DB2 9 & 10 for z/OS Overview

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