IDMS - COMMIT or ROLL BACK

shanbalasay · New User Joined: 22 May 2007 Posts: 5 Location: Chennai

When an IDMS program after executing set of STORE Commands abend, will the STORE commands been committed or all the STORE commands been ROLL BACKed ?

Note : There are no COMMIT / ROLL BACK commands in the program

cvadlamudi · Active User Joined: 19 Apr 2007 Posts: 56 Location: India

Hi Bala,

All the STORE commands will be ROLLED BACK.
Default ROLLBACK will be take place after ABNORMAL Termination.

Regards,
Chandramouli

shanbalasay · New User Joined: 22 May 2007 Posts: 5 Location: Chennai

Hi Chandramouli,

Thanks for your reply.

Your answer is justifiable from the usage of Recovery Techniques implemented widely in IDMS Programs one of which is as below.

Executing a COMMIT statement after processing every certain number of records and displaying the Total Record# processed & records information consecutively. This logic would help in recovery in case IDMS Programs abend after processing certain records. The programmer would come to know how many records were processed and which are all the records that are to be included as part of the recovery.

arnab · New User Joined: 13 Mar 2006 Posts: 39 Location: UK

Hi,

I would like to add that..

if the program runs in local mode(offline) all the changes before a commit will also be saved. If it runs in CV mode(online) all uncommitted changes will be rolled back..

thanks,
Arnab

shanbalasay · New User Joined: 22 May 2007 Posts: 5 Location: Chennai

Hi Arnab,

Can you please explain to me what is Local Mode (Offline) & CV Mode (Online).

Thanks