Index Statistics not gathered even after runing dbms_stats.GATHER_TABLE_STATS

I am trying to collect statistics to a table 'T' which is owned by 'S' schema.
When i try to gather statistics to the table, I see that the table statistics are gathered but the index statistics are still not gathered. I use the following command to collect the statistics. EXEC DBMS_STATS.GATHER_TABLE_STATS('S', 'T',estimate_percent => 30);

I confirmed the statics of index are not gathered by quering

select * from dba_indexes
where table_name = 'T'

columns leaf_blocks ,distinct_keys,clustering_factor,num_rows shows value 0
and the last_analyzed does not show the date on which i ran the
gather_table_stats.

Why does DBMS_STATS.GATHER_TABLE_STATS not gather statistics for the index?

I have not tried running gather_index_stats or rebuilding the index.

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Thanks,
Dwarak.K

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http://www.freelists.org/webpage/oracle-l Received on Thu Dec 24 2009 - 02:31:24 CST