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Some SQLs running in RBO mode

edited Jul 26, 2014 5:01AM in SQL Performance (MOSC) 4 commentsAnswered

Hi,

I'm confusing on optimizer.

Some SQLs from FLEXCUBE 12 run slowly in test servers. (We are going to upgrade from FLEXCUBE 10 to FLEXCUBE 12)

So when I checked v$sqlarea the column optimizer_mode shows 'RULE' for the slow SQLs.

EM shows the RULE as well.

Actually the init param optimizer_mode is set to ALL_ROWS.

How can the 'RULE' optimizer mode happen?

Please Help me!

Thanks.

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