• Subject: Re: AS400 allowing 24 hour availability
  • From: "Al Barsa, Jr." <barsa2@xxxxxxx>
  • Date: Tue, 02 Nov 1999 16:30:05 -0800

At 12:56 PM 11/02/1999 -0600, you wrote:

>         We are in the process of determining the best way to accomplish
>24 hour access to our AS400.  Currently access is denied for about 4
>hours a night.  This is due to system backup and nightly processing jobs
>such as billing.  At month end we have about 12 hours of down time for
>the users.  While some of the restriction of access is due to nightly
>back up over half of the time is because of our ERP solution, BPCS.
>         I have been looking into how we could mirror the database.  Once
>mirrored then unlink them so that backup and nightly processing could be
>ran over the mirrored database.  Data changes would continue in the
>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
>the database that the application is running over that we would need to
>use ASPs.  I have had a hard time finding people that have actually done
>this.  Any possible solution that I have seen approaches it either from
>the software or hardware side but not using a combined approach.  I
>appreciate any comments anyone has on this.  Thanks.

We have done what you are suggesting.  Why don't you call me, as this is 
more typing for the explanation that I want.


| Please do not send private mail to this address. |
| Private mail should go to barsa@ibm.net.         |

Al Barsa, Jr. - Account for Midrange-L
Barsa Consulting, LLC.  
400 > 390

Phone:          914-251-1234
Fax:            914-251-9406

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