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Story: Asynchronous I/O for Oracle9iR2( on Red Hat Fedora Core 2Total Replies: 0
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Oct 09, 2004
10:56 AM EDT
First: Perform installation procedure exactly as advised in [1]. Check for libaio version has been installed:- # rpm -q libaio libaio-0.3.99-3 We need libaio-0.3.96-3 to be installed (instead of libaio-0.3.99-3) to turn Oracle AIO on Find out two rpms dependent on libaio-0.3.99-3 and remove all three rpms from the system. Then install libaio-0.3.96-3: # rpm -ivh libaio-0.3.96-3.i386.rpm libaio-devel-0.3.96-3.i386.rpm Second: Build "libaio-oracle" as root Download libaio-oracle-0.3.0.tar.gz: Source to libaio-oracle version 0.3.0 from

# cd /tmp # gunzip libaio-oracle-0.3.0.tar.gz # tar xf libaio-oracle-0.3.0.tar # cd libaio-oracle-0.3.0 # ./configure # make install

Add to /etc/

/lib /usr/lib /usr/local/lib

Restart Linux. Run control test: lio_test. Next:

su - oracle Shutdown oracle

mv $ORACLE_HOME/rdbms/lib/skgaio.o \ $ORACLE_HOME/rdbms/lib/skgaio.orig cp /tmp/libaio-oracle-0.3.0/libaio-oracle.o \ $ORACLE_HOME/rdbms/lib/skgaio.o $make -f async_on $make -f ioracle

Startup Oracle

Modify screen SPFILE of OEM concole disk_asynch_io=true filesystemio_options=asynch Click "Apply" Restart instance Now Red Hat FC2 kernel (2.6.5) will handle asynchronous I/O requests DBW0,DBW1 daemons (per Oracle Guide Lines two DBWRs should be enough). Actually, to get the work done:- We replaced file skgaio.o taking part in linking Oracle binaries $make -f async_on $make -f ioracle by /tmp/libaio-oracle-0.3.0/libaio-oracle.o

References 1.

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