last time procedure executed in Oracle 11g

Is it possible to know when a stored procedure was last executed? I'm using Oracle 11g.

I've got an old app that has ma开发者_高级运维ny years of procedures in it. The goal is to quickly identify candidates for retirement.

Thanks, Mike

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There's nothing in the data dictionary that records when a package/procedure/function was last executed.

If you have candidates for deletion, you could AUDIT EXECUTE BY SESSION on those, using the DBA_AUDIT_TRAIL data dictionary view to prune the list over time -- and NOAUDIT EXECUTE those objects which get used.