Re: Creating unique index on huge table.
- From: Tim Gorman <tim@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Fri, 23 Sep 2016 22:40:05 -0600
I have rebuilt a large index on a 10.2.0.5 database as a DBA several
times and I do remember that the difference between "compute
statistics" and without "compute statistics" was several minutes. In
the large scheme of things, that may not be important. However, my
index was nowhere near as large as yours. The index was < 1 TB, around
800 GB.
COMPUTE STATISTICS was deprecated in Oracle10gR2; excerpted from the
10.2 documentation
<
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_5010.htm>...
/*COMPUTE STATISTICS* //In earlier releases, you could use this
clause to start or stop the collection of statistics on an index.
This clause has been deprecated. Oracle Database now automatically
collects statistics during index creation and rebuild. This clause
is supported for backward compatibility and will not cause errors.
/
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