see DBA_HIST_SQLSTAT and DBA_HIST_ACTIVE_SESS_HISTORY
http://orastory.wordpress.com/2012/06/19/flippin-witch-hunt-adaptive-direct-path-read/
Savepoint Funny
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Here’s an example that makes perfect sense if you know how Oracle handles
data locking. It’s one that I thought I’d published years ago, but it’s not
on th...
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