see DBA_HIST_SQLSTAT and DBA_HIST_ACTIVE_SESS_HISTORY
http://orastory.wordpress.com/2012/06/19/flippin-witch-hunt-adaptive-direct-path-read/
WAIT Clause for DMLs in 26.2
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Oracle 26ai 26.2 now introduces the WAIT (and NOWAIT) Clause for INSERT /
UPDATE / DELETE / MERGE DMLs. We have had a WAIT Clause for SELECT FOR
UPDATE...
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