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Historical CPU Utilization & IOPs Trend analysis for Oracle database

edited Nov 29, 2017 11:25PM in Database Tuning (MOSC) 3 commentsAnswered

Hello Everyone ,

We are trying to do an analysis of CPU utilization & IOPS requirement ( IOPs & Mbytes/s) per Oracle database instance (Note : All our databases are configured with Oracle RAC option). We are trying to obtain a trend of last 7 days.

Can anyone tell us if the below Oracle views provide information per database instance running in each hosts/node or sum total of all database instances running per node/host wise?

- DBA_HIST_SYSMETRIC_SUMMARY

- DBA_HIST_OSSTAT

read tota

Also, in awrgrpt.sql ( Global RAC report ) there are CPU related metrics ( DB CPU s) and IO related metrics ( physical read total bytes , physical write total bytes ). I believe these are per database instance wise , but just want a confirmation.

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