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How to find which user blocks which user?

unknown-2982728Jul 15 2015 — edited Jul 16 2015

I am trying to learn which user blocks which user?

According to v$session view, if BLOCKING_SESSION not null. Does it mean, the current session block BLOCKING_SESSION?

also v$lock view does the SID column show the blocker SID or blocked SID?

I want to see who blocks which user.

By the way which performance views do you recommend in order to find out these things? I see that V$SESSION_BLOCKERS is useful.

Thanks

This post has been answered by Franky Weber Faust on Jul 15 2015

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