Re: Files copy 5x faster when Oracle is running!

Hello Steve,

in what state is your instance? Is it *open*, *mounted* or *nomount*?

How are the respective filesystems mounted?

With which commands do you try to copy (cp, dd, cat)?

Regards,

Martin

Steve Sawicki wrote:
>
> Hello,
> Can any one tell me why when I attempt to copy datafiles within
> Solaris 2.7 from a RAID5 array to a striped array I see a 5x+
> performance increase only while oracle 8.1.6 is running? I wrote a
> script to copy all instance files (.dbf, .ctl, .ora & logs) and tested
> it while the instance was up. The goal is to copy all files to an
> offline volume for cold backups. When I down the instance and execute
> the script 31GB in 1:15 turns into 5GB/hour! The only diff is that the
> instance is up or down. What is going here?!?! Help! Need cold
> backups!
>
> Steve
Received on Wed May 08 2002 - 02:33:12 CDT