• Subject: Re: Mirroring AS400's
  • From: Vanja Jovic <vanja@xxxxxxxxx>
  • Date: Wed, 03 Nov 1999 22:54:00 -0700

Terry,

OMS/400 can't handle "double side" updates and inserts, because it
mirrors based on relative record number. However, there is a simple
trick to achieve updates on both machines and even perform backup at the
same time. If you need details, let me know.

Vanja Jovic,
Canada

Terry Herrin wrote:
> 
> Christina Beneteau wrote:
> > original database.  After the backup and nightly processing then these
> > databases would need to be brought back into sync.  There would be
> > changes in both databases, is there such a thing as two way mirroring?
> > Has anyone done this?  I have been told that in order for us to change
> 
> Christina,
> We use Visions Solutions' OMS/Gold Suite to mirror our AS/400 to an
> identical backup system.  We do use the backup system to perform tape
> backups each night, eliminating that downtime for our users.  However,
> you are also talking about having updates happening on both systems at
> the same time, then bringing those two databases back into
> synchronization after the fact.  It also looks like you would have
> users updating one of the databases at the same time as the resynch,
> since your primary system would be up and running for the users.
> Personally, knowing what I know about mirroring from the last few
> years of working with OMS, I can see no practical way of accomplishing
> what you are asking.  I know for a fact OMS can't do what you are
> asking, so you needn't bother calling Vision Solutions.  Perhaps one
> of the other two "big three" HSA companies can help, but I doubt it.
> 
> Terry Herrin
> Sr. Programmer/Analyst
> New Hanover Regional Medical Center
> Wilmington, NC
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