RE: async disk IO in RAC

  • From: Rajesh.Rao@xxxxxxxxxxxx
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 14 Sep 2005 16:40:10 -0400

What's the process experiencing all these waits? Is it DIAG or DBWR?

                      "Gogala, Mladen"                                          
                      <MGogala@allegients        To:       
"'dba.orcl@xxxxxxxxx'" <dba.orcl@xxxxxxxxx>, oracle-l                         
            >                 <oracle-l@xxxxxxxxxxxxx>      
                      Sent by:                   cc:                            
                      oracle-l-bounce@fre        Subject:  RE: async disk IO in 
                      09/14/2005 02:45 PM                                       
                      Please respond to                                         

This means that your're waiting on OS to perform async I/O. In short, try
with disk_asynch_io=FALSE and see what you
get. Open a TAR with oracle support.

Mladen Gogala
Ext. 121

From: Sami Seerangan [mailto:dba.orcl@xxxxxxxxx]
Sent: Wednesday, September 14, 2005 12:19 PM
To: oracle-l
Subject: async disk IO in RAC

We are experiencing so much "async disk IO" wait event as below.


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