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Thread: v$session_wait and v$session_event

  1. #1
    Join Date
    Oct 2000
    I am having trouble understanding the difference between v$session_wait and v$session_event. I read the oracle reference documentation and still don't get it. Anybody can explain this to me? Thanks.

  2. #2
    Join Date
    Jun 2000
    Madrid, Spain
    session_wait shows what is each session waiting at at the instance you issue select * from v$session_wait

    session_event would be the sum of session_wait in each session and each event

    system_event would be the sum of all waits in session_event

    normally I use session_wait to check for enqueue or those transactions that is taking long time (and see what they are doing/waiting)

    I query session_event when I am tracing an user and see how many waits, wait time etc his session has been facing


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