FBIs and query_rewrite_*
- From: Adam Donahue <adonahue@xxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 06 Jul 2004 11:56:53 -0700
Folks,
Most documentation I've seen suggests that the following two parameters
must be set to enable function-based indexes:
query_rewrite_enabled=true
query_rewrite_integrity=trusted
On Oracle 9.2.0, though, I thought I read somewhere (perhaps Tom Kyte's
book) that these are no longer required for FBIs on native Oracle
functions, e.g., upper(). (My tests confirmed that the CBO, at least,
generates a plan to use an FBI on upper() even when these parameters are
disabled.)
Does anyone have a pointer to official documentation confirming the above?
Thanks,
Adam
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