On Wed, 01 Oct 2003 21:36:22 +1000, Howard J. Rogers
<howardjr2000_at_yahoo.com.au> wrote:
> fuxs wrote:
>
>> ORA SQL - Ref for 9i Release 2 advises to set two startup - paramerters
>> to
>> work with function based indexes:
>>
>> <quote>
>> In addition, in order for Oracle to use
>> function-based indexes in queries, the QUERY_REWRITE_ENABLED parameter
>> must be set to TRUE, and the QUERY_REWRITE_INTEGRITY parameter must be
>> set
>> to TRUSTED.
>> </quote>
>>
>> Is it really necessary to set QUERY_REWRITE_INTEGRITY to TRUSTED? I'd
>> like
>> staying with 'ENFORCED'.
>>
>
> It's necessary, unfortunately. It's a well-known issue that the setting
> you
> want for function-based index use conflicts with what you may well want
> for
> the use of (say) materialized views.
>
> Jonathan Lewis mentions it in his practical Oracle 8i book, amongst other
> sources.
>
> Regards
> HJR
Thank you for your quick response!
Within a test - scenario (ORA 9.2.0.3 on W2K Srv SP4) a function based
index is used for according selects, even though
'QUERY_REWRITE_INTEGRITY=ENFORCED' is used. What do I miss?
--
fuxs
Received on Wed Oct 01 2003 - 10:25:20 CDT
