Can we read ESDS file randomly in batch programs

Dhanya Praju · New User Joined: 16 Jul 2008 Posts: 10 Location: Bombay

Can we read ESDS file randomly in batch programs using RBA?IF so how?

Apeksha · New User Joined: 21 May 2008 Posts: 27 Location: Mumbai

Hi,

Check the following link on the forum, hope this helps you

http://ibmmainframes.com/viewtopic.php?t=160&start=0&postdays=&postorder=&highlight=

somnath.barik · New User Joined: 16 Aug 2007 Posts: 9 Location: mumbai

Move RBA to key field and use start verb to find the position.

Dhanya Praju · New User Joined: 16 Jul 2008 Posts: 10 Location: Bombay

There is no key field in my file. Then how to start reading the file.

Robert Sample · Posted: Fri Jul 18, 2008 6:05 pm Post subject:

From the Enterprise COBOL Programming Guide:

Dhanya Praju · New User Joined: 16 Jul 2008 Posts: 10 Location: Bombay

Thanks.. my file is ESDS- Vsam sequential file.

But I would like to know
how the ESDS file is read randomly in cics using RBA by passing it to the RIDFLD keyword, since there is no rba or key field in the file ?

expat · Posted: Fri Jul 18, 2008 6:24 pm Post subject:

Probably using an AIX, which I believe is the only way that you can read an ESDS randomly.

But I am not a programmer

Robert Sample · Posted: Fri Jul 18, 2008 6:33 pm Post subject:

Your original problem statement was for BATCH. My answer was for batch. CICS uses a different way to read a file, not the COBOL method. The way CICS reads the file allows use of the RBA in the RIDFLD to directly access an ESDS record; this cannot be done in batch.

karthikr44

In one book i read that CICS process only either KSDS using key and RRDS using RBA.

Regards
R KARTHIK

Bill O'Boyle

For truly Random Reads all over the ESDS Base Cluster from a Batch caller, the only way that I know is via an ASSEMBLER sub-program, but I've been wrong before

Bill