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MONITORING USAGE | NOMONITORING USAGE
Use this clause to determine whether Oracle should monitor index use.
Specify MONITORING USAGE to begin monitoring the index. Oracle first clears existing information on index usage, and then monitors the index for use until a subsequent ALTER INDEX ... NOMONITORING USAGE statement is executed.
To terminate monitoring of the index, specify NOMONITORING USAGE.
To see whether the index has been used since this ALTER INDEX ... NOMONITORING USAGE statement was issued, query the USED column of the V$OBJECT_USAGE dynamic performance view.
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