cancel
Showing results forΒ 
Search instead forΒ 
Did you mean:Β 

ODM/Quick IO/Direct IO

Rajesh_Raghaven
Not applicable
Hi,

Our application is not very Write intensive, but reasonably high read intensive operation. We have been seeing log_file_sync times close of 25 ms (quite high) as we do lot of short commits.

We use Vxfs and EMC storage. Database is 9i. ODM is installed, but not configured. Yea, we use Database Edition for Oracle.

Now, I want to test the following on one of our sandboxes.

1. Disable UNIX buffer caching for redologs filesystems and make it write to disk directly. I do not want to enable ODM on the data files yet.

Is there a way to enable ODM (quick IO) for just redologs?. Any other approach that I can take to accomplish this?. DirectIO at the filesystem level or something like that?. I realize that by enabling directIO on FS level, I do not get ASYNCIO benefit.

Any inputs will be appreciated.

Thanks
Rajesh
0 REPLIES 0