Ben:
The qref latch is obtained for each Parallel Query process. It
is acquired before the queue buffers can be manipulated so that
communication can take place between the various slave processes.
The latch is acquired for putting messages into the buffer. You
will generally see lots of misses for this latch since it is
acquired with a nowait option.
Jon Walthour, OCDBA
Oracle DBA
Computer Horizons
Cincinnati, Ohio
>--- Original Message ---
>From: "Ben Jones" <[EMAIL PROTECTED]>
>To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
>Date: 6/14/01 1:56:36 PM
>
>Does anyone know what causes waits on this latch ?
>
>Thanks
>Ben
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