Maybe it used to be necessary and no one has verified this on newer versions? Freek D'Hooge Uptime Oracle Database Administrator email: freek.dhooge@xxxxxxxxx tel +32(0)3 451 23 82 http://www.uptime.be disclaimer: www.uptime.be/disclaimer ---- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of kyle Hailey Sent: dinsdag 19 april 2011 19:36 To: Oracle-L List Subject: Re: How much RAM is to much I'm wondering why there is the recommendation to use "forcedirectio" on the ,mount options when it seems, at least on solaris, that filesystemio_options=directio is sufficient for using direct I/O? - Kyle http://dboptimizer.com -- //www.freelists.org/webpage/oracle-l