RE: some ideas needed

["Francis Lapeyre" <flapeyre@xxxxxxxxxxx>]

Oh, I see, it's an interactive job locking the file. I had thought two batch
programs were conflicting.

I think the real solution is to fix the interactive program that locks the
file. You should not be chaining to the file with a lock until you are ready
to update it. The first time the program chains to the file, chain with no
lock to get an image. Use an externally described data structure with the
Prefix keyword to rename the fields, an another one without the prefix
keyword. Move the second data structure to the first one right after you
chain with no lock. When ready to update, chain again with a lock, and
compare the two data structures. If they differ, someone else has updated
the record; in that case, unlock the record immediately and send an error
message to the user. Otherwise, update the record immediately. This way, you
only lock the record for a very short time (when the record is actually
updated).

Also use the (E) extender on the chain with a lock; if %ERROR is on, send an
error message that the record is locked by another user.

By reading the File information data structure, you can tell who is locking
the record (if you are checking for both %ERROR and the correct %STATUS
code).

This way, the users can handle their own record lock problems.

 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of murali dhar
Sent: Monday, January 3, 2005 9:47 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: some ideas needed

Hi Francis,
Thanks for responding,
but my first priority is batches,batch has to run without lock problems
caused by user.
 
I want to cancel User job,currently what I do is finding out user-id and
call him to cancel his job.I am thinking on a program which will find user
id and send user message to all users on AS400 which says to cancel  his
session at that time, the program can be robot shceduled for automatic
running in my system.
Best Regards,

Francis Lapeyre <flapeyre@xxxxxxxxxxx> wrote:
Make sure whatever submits that program to batch submits it to the same job
queue, and make that job queue single-threaded (only one job can be active
at a time).

Francis Lapeyre
IS Dept. Programmer/Analyst
Stewart Enterprises, Inc.

E-mail: flapeyre (at) stei (dot) com 



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of murali dhar
Sent: Monday, January 3, 2005 5:27 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: some ideas needed

Hi all,
2 batches batch1 & batch2 constantly lock due to users running a program
BUP009C.

Inorder to let 2 batches run through, I usually find User-id who is running
the job BUP009C and cancel his job.

I want to place a program which would constantly check during time period
5pm-7pm which user is running BUP009C at that time(batch1 starts at 5pm ,
batch2 starts at 5.15pm,both end around 7pm) and send message to all users
on AS400 lettinng them which user is running and asking him to cancel out
his session.
any ideas appreciated..

Happy&Prosperous new year 2005 to all..
regards,


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