FBIs and query_rewrite_*

From: Adam Donahue <adonahue_at_opsware.com>
Date: Tue, 06 Jul 2004 11:56:53 -0700
Message-ID: <40EAF5F5.5080601@opsware.com>

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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Received on Tue Jul 06 2004 - 13:54:19 CDT