Re: ORACLE on mainframe compare to UNIX /linux server?
- From: "M.Godlewski" <mcgodlewski@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 22 Jun 2004 08:24:34 -0700 (PDT)
I've used Oracle on a MVS mainframe. Performance was horrible. There wasn't
enough memory and the machine couldn't support more without a costly upgrade.
It pages out your sga if you don't have it active enough. Therefore, you end
up waiting for the SGA to get read back in from virtual memory (Disk) at disk
seek speeds. We migrated our application off MVS OS/390 to a UNIX Sun sparc
machine a few years back, and are still smiling about it. Other applications
are still using the mainframe though and I hear some noise occasionally, It
definitely is a different beast.
Tim Johnston <tjohnston@xxxxxxxxxxxx> wrote:
I never did Oracle on MVS (or OS/390) but I did support Oracle on VM
(6.0.36-7.3.3)... I'll back up the cons that Allan mentions... In my
case, there was ONE support analyst in the US who knew his stuff about
VM... Whenever I called with an issue and he was out sick or on
vacation, the other analysts were scared to death... They lumped MVS
and VM support into the same group... But, Oracle on VM wasn't that
hard to manage... A few quirks but nothing you couldn't figure out with
some time and effort... MVS on the other hand is a whole other
beast... It's a different mindset in the MVS world... JCL, JES, DASD
etc... I started on that side of the world using IDMS databases...
Seems like a lifetime ago... On the plus side, they have very mature
tools... Mainframes have excellent job scheduling, CPU management and
the security tools are pretty tight...
Some specific points...
It sounded like VM Oracle was going away the last time I worked with it
(1999)
It sounded like MVS Oracle was going stay
MVS usually lagged far behind in the release cycle
VM usually lagged far behind MVS (I was a beta site for 7.3.3 on VM
during 1998...)
Now, as I get to the bottom of this, I start to think... Are you
talking MVS/VM or maybe you're talking about Linux on the mainframe?
Not sure about Linux on the mainframe...
Tim
dba1 mcc wrote:
>We are study ORACLE on mainframe and need your
>suggestion. We already use ORACLE on LINUX/UNIX for
>sevceral years and want to know CON and PRO while move
>to mainframe.
>
>Any one have experience on it?
>
>Thanks.
>
>
>
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