DB2 9 & 10 for z/OS Overview

Migration Planning WorkshopStatistics Enhancement... AutoStats• Autostats is implemented though a set of Stored Procedures– Stored procedures are provided to enable administration tools andpackaged applications to automate statistics collection.– ADMIN_UTL_MONITOR: Look for statistics needing update– ADMIN_UTL_EXECUTE: Execute RUNSTATS– ADMIN_UTL_MODIFY: Clean up the Autostats Repository– ADMIN_ADD_TASK: Called by MONITOR/EXECUTE & start up– STATS ADVISOR (Data Studio)• Run automatically honoring specified time windows• Working together, these procedures– Determine what stats to collect– Determine when stats need to be collected– Schedules and Performs the stats collection– Records activity for later reviewSee Chapter 11 "Designing DB2statistics for performance" inthe DB2 10 for z/OS ManagingPerformance Guide for details onhow to configure autonomicmonitoring directly within DB2.Also see the ADMIN_UTL_MONITORdefinition for criteria ofMissing, Out of Date, orInconsistent statistics.152© 2011 IBM Corporation