Need help in checkpoint/restart logic

sharad_shanu · New User Joined: 03 Oct 2006 Posts: 40

Hi,

I have to add checkpoint/restart logic in a program. But my code does not deal with any file. It simply reads from IMS databases and replaces them.
Please guide me how it can be done.

Regards,
Sharad

enrico-sorichetti · Posted: Tue May 20, 2008 10:27 am

checkpoint restart is not something that You can simply stick in You programs
based on some forum replies

checkpoint restart - when implemented -
will be a critical component of the overall application architecture
and as such must be carefully planned and analyzed
with the cohoperation of the application design team and the DB support group

sharad_shanu · New User Joined: 03 Oct 2006 Posts: 40

Well....thanks for the reply!!
But I am more concerned about the information whether we can put this checkpoint/restart logic without any files or not???
Please confirm.

--Sharad

enrico-sorichetti · Posted: Tue May 20, 2008 10:45 am

You will not need to add any file,
but You might ( almost certainly ) need to introduce a new database
to store the relevant ( in cobol terms ) working storage structures

simply put
if You accumulate running totals and counters in working storage
You will need to write them to a checkpointed resource
an rebuild them at restart tusing the checkpointed info

again such implications should be discussed and planned at a higher level

dick scherrer · Posted: Tue May 20, 2008 10:57 am

Hello,

Checkpoint/restart is not typically designed at the individual program level. There is an overall design/strategy for at least an application, if not the environment.

While your program might not use anything other than database, others will. If your program creates a report, that is also a "file" and needs to be re-synched. . .