Re: Sophisticated Performance Tuning: Need Wizard!
From: Marty Himmelstein <marty.himmelstein_at_valley.net>
Date: 1996/01/12
Message-ID: <4d4pt7$tqv_at_dartvax.dartmouth.edu>#1/1
Date: 1996/01/12
Message-ID: <4d4pt7$tqv_at_dartvax.dartmouth.edu>#1/1
Hi, Lisa,
I have some questions on some performance tuning advice you gave.
>Is your I/O balanced? This is most likely the culprit. Make sure you minmize the
>Unified Buffer Cache (UBC). In /etc/sysconfigtab:
>
> vm:
> ubc-max-percent=2
> ubc-min-percent=1
>
>>Does this have a similar effect as using raw devices?
>To get asynch I/O, set the value of the init.ora parameter asynch_write to 1.
>>My Oracle documentation says asynch I/O is not supported on DEC Unix. What am I >>missing?
Regards,
Marty Himmelstein
marty.himmelstein_at_valley.net
Received on Fri Jan 12 1996 - 00:00:00 CET