db_writer_processes and Async IO ???

  • From: dba1 mcc <mccdba1@xxxxxxxxx>
  • To: Oracle-L@xxxxxxxxxxxxx
  • Date: Sat, 15 Aug 2009 15:36:28 -0700 (PDT)

we have ORACLE 10Gr2 on Redhar AS LInux server version 4.X.  I checked one of 
database init.ora have following setup:

db_writer_processes = 2

filesystemio_options = asynch
DISK_ASYNCH_IO  = true
TAPE_ASYNCH_IO  = true

Based on what I know "db_writer_processes " and "filesystemio_options = asynch" 
are exclusive.  Can anyone tell me database will use whiche one?

Thanks.


      
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