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SQL Performance (MOSC)

Silent card change

Apr 21, 2017 9:42AM edited May 8, 2017 5:00AM in SQL Performance (MOSC) 3 commentsAnswered

Hello

I have a sql expr with a unique SQL_ID and only 1 child. It includes a gtt.

from V$SQL : no invalidation, no reload observed.

but statistics changed

from V$SQL_PLAN : gtt cardinalty has changed from 47000 to 50000.

the sql statement has run lots of time with a real card of 1000.

Could explain under what condition can occur that phenomenon?

I'm on 11.2.0.4 EE

Thank you.

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