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sunshine · Beginner Joined: 20 Sep 2004 Posts: 5 Topics: 4

hi,
i need to understand how exactly does a batch and cics program share data using a extrapartition TDQ. i have understood that the file is a VSAM/ESDS file, but i havent understood how the batch program would access it in the program.it would be very nice of u if u could send some sample code wrting to a TDQ and the other program reading the TDQ.
awaiting your reply.
thank you.
sunshine

kolusu · Posted: Thu Sep 30, 2004 7:31 am Post subject:

Sunshine,

A TDQ is a Transient Data Queue and is a pre-defined dataset which cannot be created or deleted dynamically and can only be read or written sequentially. Also, a record is DELETED from TDQ as soon as it has been read.TDQ is written to Disk.

Define a DCT entry for your TDQ(intra/extra)

sunshine · Beginner Joined: 20 Sep 2004 Posts: 5 Topics: 4

thanx for the information on the TDQ. but i really wanted to know how the batch program would access the TDQ since its a normal VSAM file. i understand that the ddname id the DSCname we enter while creating the TDQ. BUt when we write
//ddname DD DSN = 'somefilename',disp=shr......
and this ddname id the assign to ddname in the cobol batch program

how does the batch application programmer know the name of the 'somefilename',since the TDQ was created with the id,dscname etc. does the system assign a name for the VSAM file.
awaiting a quick reply. thank you!!
sunshine

Mike Chantrey · Posted: Mon Oct 04, 2004 8:51 am Post subject: