How can I turn off File system cache?

joxer77 · 07-27-2005, 03:28 AM

Hi,
I want to turn off file system caching on my AIX 5.3 P520 box and leave all the caching to the Oracle 9 database.

Anyone know how this can be done?

thanks

Mark Taylor · 07-28-2005, 12:03 PM

mount -o rbrw

You may also want to look at the -o dio -o cio options ... good whitepaper -->

http://www-1.ibm.com/servers/aix/whi...b_perf_aix.pdf

HTH
Mark Taylor

Yordan · 08-01-2005, 01:54 PM

yes, but dio and cio don't work in all cases. I think all the "open" syntaxes have to be rewritten with the dio option.
I just tried -cio and -dio with oracle, it simply crashed !

Mark Taylor · 08-02-2005, 09:40 AM

sounds like you need to install some fix placks then

Yordan · 08-04-2005, 09:10 AM

Probably, yes.
And also, I heard that I should not mount the oracle binaries filesystem with the -cio option, I should use cio and io only for database files.