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Which execution plan holds the truth in 11gR2 ?

edited May 23, 2013 4:59AM in SQL Performance (MOSC) 7 commentsAnswered
Hi ,

I use PLSQL Developer and I would like to know if the execution plan displayed by F5 key is well really followed by the query in 11gR2 ?

Do I have to really execute the query (or to trace it) to have the true execution plan ?

Which plan of execution is displayed in PLSQL Developer ( or Toad) if several plans exist in memory for the same query ?

Best regards.

GD.

 

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