Mainframe, MVS and zOS Discussion

Hi,

How to read multiple input is passed by parm parameter from jcl in COBOL program?

It is not clear what you are asking -- you'll need to provide an example so we can see what you want.  Parameters passed from JCL, in general, are available through the LINKAGE SECTION.

If there are more than parameters passed from JCL, how do we recieve them in LINKAGE? If they are separate variable and don't belong to each other but passed in together?

You can only pass ONE parameter from JCL to COBOL.  You can parse that parameter any way you need, but it is only one parameter with one entry in the LINKAGE SECTION.