When would we see optimizer_mode=NONE in V$SQLAREA ?

From: Hemant K Chitale <hkchital_at_singnet.com.sg>
Date: Wed, 29 Oct 2003 07:04:29 -0800
Message-ID: <F001.005D4F20.20031029070429@fatcity.com>

I noticed in an 9.2 instance that a number of entries in V$SQL, V$SQLAREA showed up with OPTIMIZER_MODE=NONE [there were others with CHOOSE]

I can understand that it might be NONE if someone has done an ANALYZE or DBMS_STATS
or executed DDL and the SQLs are invalidated. But do you normally see a number of entries in V$SQL like that ?

[I had approx 20% of the entries].

Hemant K Chitale
Oracle 9i Database Administrator Certified Professional My personal web site is : http://hkchital.tripod.com

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Author: Hemant K Chitale
  INET: hkchital_at_singnet.com.sg

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