IBM Mainframe Forum

Hi All,

How to pass values from JCl to cobol subroutine, if want to pass date value from JCL to subroutine without changing main program.

JCL communicates parameter data only to a "main" program. What you propose cannot be done.

Although you haven't said exactly what you want to do, one possibility would be to put the data your require into a dataset and then read that dataset in the sub-program. As Steve says, you can't specify PARM in the JCL and have your sub-program get access to it, unless the main-program specifically includes it on the USING of the CALL to the sub-program.

Can we pass the data through sysin card in JCL to subroutine..?

Use ACCEPT.

Yes. SYSIN is just a DD statement. If your main-program is not reading SYSIN, then your sub-program could.

However, things would be much clearer for maintenance if you create a new DD for your sub-program to read. People won't expect SYSIN to be read in a sub-program, so will waste time investigating why it is in the JCL and not used by the main-program, then remove it from the JCL and have the sub-program not work.

thanks Billy, Robert and Steve

if subroutine is using 10 times in the same main program then how to code sysin card in jcl..?
do I need to repeat the values 10 times in sysin..?

then it would be wise to organize the subroutine in order to read the parameters only once

rambachi2000 wrote:if subroutine is using 10 times in the same main program then how to code sysin card in jcl..?
do I need to repeat the values 10 times in sysin..?

No, as enrico has said. In the sub-routine, only read the data (you have, unwisely to my mind, chosen to go with SYSIN) once, then store it for use that time and the remaining times that the sub-routine is called.