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Database Tuning (MOSC)

Performance issue in 11.2.0.4

Feb 10, 2022 6:10PM in Database Tuning (MOSC) 5 commentsAnswered

Hi,

my DB has a strange performance issue.

I run a query and it produce a lot of physical Disk Read.

Then I run command:

Analyze table mytab compute statistics for table for all indexes;

and the physical disk read disappears.

After 4 hours or an instance shutdown/restart, the physical disk reads came back again and my app became unresponsive.

Where can I look to find a cause?

thanks

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