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Home -> Community -> Mailing Lists -> Oracle-L -> $ORACLE_HOME on JFS2/AIX5.2 ?!
Hi all,
the env is oracle 9.2.0.4/AIX5.2
an excerpt from metalink forum about large files on JFS2 in AIX5.2 this is what a support analyst says:
<quote>
"If placing the Oracle Database's logs on a JFS2 filesystem,
the optimal configuration is to create the file system with option
"agblksize=512" and to mount it with option "cio". This delivers
logging performance similar, within a few percents, to the
performance of a raw device.
In Oracle Database 9i, Direct I/O and/or Concurrent I/O can only be enabled at filesystem level on JFS/JFS2 and therefore $ORACLE_HOME and datafiles have to be placed in separate filesystems for optimal performance: $ORACLE_HOME would reside on a file system mounted with default options, whereas datafiles and logs would reside on file systems mounted with the "dio" or "cio" option. </quote>
why should $ORACLE_HOME reside on a seperate file system and NOT on JFS2 ? Can $ORACLE_HOME also reside on JFS2 file system ? this is what my manager asked me and hence posting this query to the LIST.
In order to make our datafiles on new instances bigger (~8G), we are thinking of moving from JFS to JFS2 ? any caveats here ?!!
Can someone throw some light here ?
Thanks and Regards,
Prem.
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