Go back to 1Z0-031 - Oracle9i Database: Fundamentals I

Question :-

You execute the following command on an index, SALESORDERSINDX for the first time: SQL> ALTER INDEX salesordersindx MONITORING USAGE; Which task does this command accomplish?
It populates the index usage statistics in the INDEXSTATS view.
It displays the index usage statistics when a query uses the index.
It populates the index monitoring and usage statistics in the V$OBJECTUSAGE view.
It populates the index usage statistics in the alert log file.

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