Oracle Logbook

March 11, 2011

Difference in gathering statistics

Filed under: Uncategorized — Helio Dias @ 8:29 pm

The major difference between DBMS_STATS.GATHER_DATABASE_STATS_JOB_PROC and DBMS_STATS.GATHER_DATABASE_STATS is that GATHER_DATABASE_STATS_JOB_PROC is smart enough to start the analyze with most in need objects.

Wait event : Read by other session

Filed under: Uncategorized — Helio Dias @ 4:02 pm

In case the contention is on indexes, I would recreate the primary key using reverse index.
Before do this , you should be aware the drawback regarding range scan.

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