RE: CTX Indexes

Hi,
Well it has been a while, but back in 8.1.7 Oracle changed things so = that the analyze did nothing, it only recorded the fact that it had been = run. The optimization method was changed to so that it was carried out = at query time to find the token document count.

The object owned by ctxsys were not analyzed, but the = dr$<your_index_name>$I etc objects created in the application schema = that owned the text indices were analyzed. As well as a regular = CTX_DDL.OPTIMIZE_INDEX. Regards

Pete

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Mercadante, Thomas F (LABOR)
Sent: 25 May 2005 13:00
To: oracle-l
Subject: CTX Indexes

All,
=20

We are just creating CTX type indexes for the first time and I have a couple of questions.

=20

I know that I need to periodically resync the indexes using the Ctx_ddl package. We plan on doing this nightly for now until the apps folks tell us it needs to be done more often.

=20

I also tried to gather stats on the index, but the stats columns in the user_indexes view did not get updated. Is gathering stats on ctx type indexes a waste of time? Should I be gathering stats on some CTX tables instead - like the DR$INDEX_VALUE table where all of the data from the column is actually stored (this is a big assumption on my part)?

=20

Thanks

Tom

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