For the record (if anyone still interested in this thread) I found out recently; - Oracle 9i supports ASYNC IO on Linux. - Oracle OCFS supports ASYNC IO on Linux. *HOWEVER* Oracle 9i RAC + OCFS + using ASYNC IO is NOT supported. ...but I am currently running it and I immediately notice that "shutdown immediate" hangs / terminates. Have to "Ctrl+c" in my SQL> term and issue "shutdown immediate" again to stop the database! Saw a simple bug logged on Metalink for HP and RAC for the same issue...no good info though. Chris Marquez Oracle DBA HEYMONitor(tm) - heymonitor.com "Oracle Monitoring & Alerting Solution" -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Marquez, Chris Sent: Friday, January 14, 2005 3:06 PM To: oracle-l@xxxxxxxxxxxxx Subject: RE: Linux RAC and asynch io - OCFS & "filesystemio_options" parameter? My config; 9205 ocfs 1.0.13-1 Anyone want to take a guess as to what "filesystemio_options" should be set to? Could find a direct answer on Metalink...I would guess "filesystemio_options=3D3Dasynch", because my (Cluster) filesystem supports async IO? PS I found no posted issues regarding database crashes, Linux & async I/O!? Chris Marquez Oracle DBA HEYMONitor(tm) - heymonitor.com "Oracle Monitoring & Alerting Solution" -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Marquez, Chris Sent: Friday, January 14, 2005 1:50 PM To: thump@xxxxxxxxxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: RE: Linux RAC and asynch io/IO slaves David, Thanks for the info...I going to check metalink too, but go relink sometime today and run some laod tests. Chris Marquez Oracle DBA HEYMONitor(tm) - heymonitor.com "Oracle Monitoring & Alerting Solution" -----Original Message----- From: delysid@xxxxxxxxxxxxxxxxxxxx [mailto:delysid@xxxxxxxxxxxxxxxxxxxx] On Behalf Of David Sent: Friday, January 14, 2005 1:05 PM To: thump@xxxxxxxxxxxxxxxx Cc: Marquez, Chris; matthewp@xxxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: RE: Linux RAC and asynch io/IO slaves Everything I have read advocates aio on RHAS 3.0. I have heard also it can cause crashes and corruption, but found no meat to that statement no open bugs for 9205/9206 on rhas 3.0 Anyone with any hard facts as to real issues or successes? Anyone done an IO slave implementation in Linux/RAC? IO slaves in many ways are more robust and multi purpose than asych IO functionality...but I'm wondering how that performs with RAC. Yes, I would and will test either or both before consideration with prod, but looking for others insights if they have been down the road. -- .. David >> >> Matthew, >> >>>>bugs related to 9i RAC on Linux and asynch io >> >> Can you point to any (bugs) specifically or should I just = search=3D3D20 >> =3D >> Metalink? >> >> I was considering enabling this for my=20 >> 9iRAC/RHEL3ES...Oracle=3D3D20=3D20 (marketing, presentations) imply = that=20 >> I should be doing this. Frankly >> Oracle Corp. takes much credit for helping RH/Linux get to async-IO? >> >> Thanks, >> >> Chris Marquez >> Oracle DBA >> HEYMONitor(tm) - heymonitor.com >> "Oracle Monitoring & Alerting Solution" -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l