Maximum number of instream procedure allowed in a job is 209

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

The books says that not more than 15 instream procedures can be coded in job. I tried coding 209 instream procedures and also executed all the 209 procedures. It works perfectly well.

If I code 210 instream procs then I get JCL error that says excessive number of instream procs.

Can anybody throw some light on this topic and tell me why there is a contradiction between books and the real mainframes.......

dick scherrer · Posted: Wed Aug 06, 2008 11:26 am

Hello,

Hopefully the collection of 200+ procs is made up of very small procs.

Please post 2 or 3 of them so we can see what you are running.

dbzTHEdinosauer · Posted: Wed Aug 06, 2008 12:06 pm

book for which release of your op-sys?

expat · Posted: Wed Aug 06, 2008 12:07 pm

dick scherrer · Posted: Wed Aug 06, 2008 12:10 pm

Hello,

The most current manual we have linked via "IBM Manuals" has the 15. . .

Possibly i mis-read. . . Gettin' late/early here. . .

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

The Instream procs are exteremely small infact i wrote the jcl just to check if a single job can actually have more than 15 procs and i landed up in the number 209. irrespective of the size of procs i believe the number should be 15. some how it does not throw an error when i have 209 insteam procs in a single job.

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

They are all level 1 procs

dbzTHEdinosauer · Posted: Wed Aug 06, 2008 12:27 pm

as mentioned and as usual overlooked, Expat pointed out that the 15 refers to nesting levels, not the number of procs.

dick scherrer · Posted: Wed Aug 06, 2008 12:30 pm

Hello,

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

Mr dbzTHEdinosauer, 15 levels of nesting is one thing which i am aware of.
I am reffering to the exact line that is mentioned in J. Ranade IBM series, The MVS JCL Primer, Tata McGraw Hill. It clearly says the maximum number of instream procedure allowed in a single job is 15. It also says 15 levels of nesting is allowed.

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

What is the significance of the number 209? Can u guys actually test it, and see if it happens in your version of OS ? If u want I can actually share the REXX code that i used for creating a PS with 209 instream procs and 209 steps to invoke each of these procs.

dick scherrer · Posted: Wed Aug 06, 2008 12:45 pm

Hello,

Rather than the code to generate these, i'd rather see a few of the procs and the "steps to invoke" them. . .

dbzTHEdinosauer · Posted: Wed Aug 06, 2008 12:49 pm

did you exceed the 255 dd statement limit with your 210th proc?

Arun Raj · Posted: Wed Aug 06, 2008 2:08 pm

Hi,

Just out of curiosity I just tried this out with 20 in-stream procs and it executed fine!!.

Here's my job.

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

//Exxxxx JOB ,,NOTIFY=&SYSUID,CLASS=D,MSGLEVEL=(1,1),MSGCLASS=X
//PROC1 PROC
//STEP1 EXEC PGM=IEFBR14
// PEND
//PROC2 PROC
//STEP2 EXEC PGM=IEFBR14
// PEND
//PROC3 PROC
//STEP3 EXEC PGM=IEFBR14
// PEND
//PROC4 PROC
//STEP4 EXEC PGM=IEFBR14
// PEND
.
.
.

//PROC209 PROC
//STEP209 EXEC PGM=IEFBR14
// PEND
//STEP1 EXEC PROC1
//STEP2 EXEC PROC2
//STEP3 EXEC PROC3
//STEP4 EXEC PROC4
.
.
.
.
//STEP209 EXEC PROC209

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

Quote:

did you exceed the 255 dd statement limit with your 210th proc?

I do not think there is a restriction on the number of DD names but we do have a restriction on the number of steps or exec which is 255. My job does not contain 255 steps but contains only 209.

Arun Raj · Posted: Wed Aug 06, 2008 4:38 pm

Hello shyam

dick scherrer · Posted: Wed Aug 06, 2008 9:20 pm

Hello shyam,

Thanks for posting the procs/execs.

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

IEFC665I EXCESSIVE NUMBER OF INSTREAM PROCEDURES
and
IEFC612I PROCEDURE PROC210 WAS NOT FOUND

PROC210 refers to the 210th proc. 209 procs gets expanded successfully

enrico-sorichetti · Posted: Thu Aug 07, 2008 4:31 pm

I would like to disagree on the number given in the topic tile as an absolute truth

if You had searched the forums with instream You would have found that ...

the topic has already been discussed with tests here

anyway as noted in the pointed out thread,
the full message text points out a space problem in the conversion/interpret stages
so 209 might be a good number for stupid IEFBR14 whitout any DD statement

as soon as I write a rexx tool to create 209 more complicated procedures
I will post the findings

dick scherrer · Posted: Thu Aug 07, 2008 7:19 pm

Hello,

From the Messaged and Codes for message IEFC665I:

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

IEFBR14 is simple. I agree. Yesterday I wrote a JCL to execute a batch cobol program that reads a dataset and puts the content to the spool. Again the number of instream proc that i was able to successfully execute is 209. If the manual puts a limit to the number of Instream Procs, then I totatly believe that size has nothing to do with it. I still cannot figure out the significance of 209 leave alone not 15. I referred a couple of more books, everything says the only 15 instream procs are allowed.

If the forums cannot answer then who can answer?

shyam k dhanraj · New User Joined: 18 Jun 2008 Posts: 27 Location: bangalore

Quote:

Yes we do have a limit in the number of DD statements and the manual says it is 3273

The maximum number of DD statements allowed for a single step or exec is 1635.

The maximim number of a records a JOB can have is 3273 and hence the maximum number of DD statements for a JOB cannot be said as 3273. A job has to have a miniumum of two non DD records i.e. the JOB CARD and an EXEC.

Aaru · Posted: Fri Aug 08, 2008 11:38 am

Shyam,

Arun Raj · Posted: Fri Aug 08, 2008 12:13 pm

Shyam,