EXEC CICS ASSIGN STARTCODE

wang_f_y1 · New User Joined: 16 May 2008 Posts: 47 Location: shenzhen

hi,
EXEC CICS ASSIGN STARTCODE(start-code)
IF start-code NOT= "SD"
PERFORM INVALID-START-ROUTINE

(sends an error message to a terminal if the program is started without data)
END-IF.
when i type transaction "MBV1" in cics region.

I always get "start-code=TD".how can i get "SD"?
by the way,
this is IBM Credit Check sample.

Robert Sample · Posted: Wed Oct 29, 2008 8:05 pm

enrico-sorichetti · Posted: Wed Oct 29, 2008 8:08 pm

did You read the manuals ....

publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/dfhp4c00/1.12?ACTION=MATCHES&REQUEST=startcode+values&TYPE=FUZZY&SHELF=DFHASJ00.bks&DT=20070612172134&CASE=&searchTopic=TOPIC&searchText=TEXT&searchIndex=INDEX&rank=RANK&ScrollTOP=FIRSTHIT#FIRSTHIT

and scroll a bit down until You find the startcode values

you will get an "SD" by starting the transaction in the proper way
( usually IIRC this token is used in an MQ environment )

pkmurali · Active User Joined: 15 Dec 2005 Posts: 271

Thanks Robert & enrico for the link provided for Start code analysis.

I have the similar scenario as wang had. where my driver module receives TD as start code apart from that it can also can have QD, SD,S & U. For QD i have analysed and found that the driver module will be receive the start code as 'QD' if the trans id is invoked through a TDQ, also i found the TDQ associated with the trans id.

Now the question is, the start code 'TD' is received in the driver module if the program is invoked from FE which uses .net screens(i/ps pased from .net screen to mainframe). similarly for TDQ how it is triggered?
i have browsed the following links in ibmmainframes.com
www.ibmmainframes.com/viewtopic.php?t=17526&highlight=
ibmmainframes.com/post-63210.html
QD A transient data trigger level was reached.
Is it possible to back trace what made the TDQ to be triggered to intiate the trans id?

Thanks,
Murali.

Robert Sample · Posted: Tue Oct 19, 2010 5:08 pm

CEMT I TD(????) will display the trigger level, if any, associated with the TDQ. If you have access to the SP commands of CICS, you can inquire against the TDQ to find the trigger level.

pkmurali · Active User Joined: 15 Dec 2005 Posts: 271

Robert,

I saw the trigger level,but i need to know apart from CICS program, is it possible to write TD queue? i.e. from Front End. I hope for Extra partition TDQ is it possible to write the data into TDQ. But in this case the TDQ is intra partition.

Thanks,
Murali.

Robert Sample · Posted: Tue Oct 19, 2010 6:26 pm

An intrapartition TDQ, as the name indicates, exists entirely within the CICS region. I don't see any mention -- other than a monitoring program -- of using a TDQ in the FEPI manual. However, this is not an area where I've done much so it may be possible to access an intrapartition TDQ from outside the region -- I don't know for sure either way.

pkmurali · Active User Joined: 15 Dec 2005 Posts: 271

Robert,

How to CICS recognize / assigns the start code as 'QD' once the TDQ is written. can you please throw some light on this area.

Thanks,
murali.

Robert Sample · Posted: Tue Oct 19, 2010 7:43 pm

If a transient data queue has a trigger level, and the trigger level is reached, a transaction will be started. That transaction will have QD as the start code. How do you know which transaction is started and when? Look at the TDQ via CEMT:

pkmurali · Active User Joined: 15 Dec 2005 Posts: 271

Thanks Robert.

Robert Sample · Posted: Tue Oct 19, 2010 8:28 pm

CECI ASSIGN will show you the Startcode. Since I've never worked for IBM and never seen the CICS internals, I have no idea how it is stored.