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HOW TEMP is calculated for Parallel sessions.

in Database Tuning (MOSC) 7 commentsAnswered ✓

Orace database

version 19.13.

I have a query which runs daily, when i checked SQL monitoring report, it shows 300G temp used at hash join and other step. But when i query GV$active_session_history and dba_hist tables, it shows that SQL used only 50G temp.


SQL runs with parallel 8.


How different is the TEMP usage compared to no parallel and parallel sessions ?

Which one is correct value Monitoring report or ASH data ?

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