Mainframe, MVS and zOS Discussion

Hi,

This is just a thought at this point in time but with some direction maybe I can do it.

Can we write our own compiler? I mean if I want to write a COBOL compiler, how can I get started? Could anyone guide please?

Hi,

We know that COBOL compiler on mainframe uses IGYCRCTL as the program to compile a program. Is the same program used by any other compiler to compile the program? Like in GnuCOBOL what is used?

Hi Robert,

Thanks. Will DISP=SHR made a difference?

Hi,

When two persons are adding columns to the same table at a time, what will happen? It's not data to the columns but columns it self using alter table command?

I could not answer this question too.

Hi,

Another interview question which I could not answer was - how to run second step first and first step next?? Could you please help me with answer.

Hi,

Did you get it solved? I think, what Anuj has said is the error.

Hi,

Is there a possibility to delete the ps file records thru JCL and make the ps file a fresh for code availability??

I'm not sure how to do it? Had it been a VSAM dataset I could have used DELETE statement but can we use that with a sequential files also?

Thanks Robert. That's what we have done, Thanks for your time.

Hi, We use a Load library with following attributes: Command ===> More: Data Set Name . . . . : TEST.LOADLIB General Data Current Allocation Management class . . : STANDARD Allocated tracks . : 2,045 Storage class . . . : TESTLIB Allocated extents . : 13 Volume serial . . . : LIBT0B Device type . . ...