Re: USE_ISM Solaris Bugs

Always tell us Oracle version. Some Metalink articles say that if you're short in physical memory, you need to set [-]use_ism to false. The reason is that a side effect of Solaris Intimate Shared Memory is that the shared memory segment becomes non-pageable. I suspect what you observe is because when you don't have enough physical memory but enough to accomodate SGA, non-SGA memory used by Oracle has to constantly be paged in and out. This is only one possibility. Anyway, search on Metalink to get a complete picture.

Yong Huang

"Stephan Bressler" <stephan.bressler_at_pdb.sbs.de> wrote in message news:<9tiatc$s39$1_at_news.mch.sbs.de>...
> Hi,
>
> we run a lot of big databases on solaris (2.6 and 2.7). On some DBs
> use_ism=false, for there were bugs in some solaris releases causing block
> corruptions.
> But, we need to use this functionality because on some system we end up with
> >50%sys.
>
> Does anybody know, which solaris releases have bugs in this area? One which
> hardware?
> Or any link to such information?
>
> TIA
> Stephan Bressler
Received on Thu Nov 22 2001 - 17:50:51 CST