Re: Commit or Journal?

[jmoreno@xxxxxxxxxxxxxxxx]

truax @ usaor.net wrote on 09/18/97 at 12:47:00 pm AST


>Hello all,
>Here is the situation I am faced with (I know all ways to do all things
>on the S36....probably) I want to know what feature of the AS400 will
>allow me to rectify this:
>
>2 users access the same account number at the exact same time in the
>same file and same interactive job and are presented with a full screen
>where 20 comment lines can be typed in.
>User 1 - gets this screen with available sequence numbers 1 thru 20.
>User 2 - gets this screen with same available sequence numbers!!!
>User 1 & User 2 - commence to typing in the comments 1 thru 20.
>User 1 hits enter first and adds the records 1 thru 20, Now
>User 2 hits enter and they update and write over User 1's previously
>entered comments.
>
>This is very rare, but happens too regularly and I know how I can handle
>it using my S36 ability.
>I want to know if there is a good AS400 way to handle this.  Maybe
>with COMMITMENT or JOURNALLING ?
--------------------------------------------------------------
I hope I can help you with this: If the account number does not exist in
the            file write and immediatly read for Update. If the account
number exists read the record for update. The AS/400 Data Management will
provide the record lock and you will be in charge in your
program/application to update the record at your convenience and remove all
phantom updates. Good Luck . Jorge




+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to "MIDRANGE-L@midrange.com".
| To unsubscribe from this list send email to MAJORDOMO@midrange.com
|    and specify 'unsubscribe MIDRANGE-L' in the body of your message.
| Questions should be directed to the list owner/operator: david@midrange.com
+---