Operator

At our mainframe shop, there are many jcl’s which use BLKSIZE=0 for the datasets which are cataloged by the JCL.  From what I learnt during my training the BLKSIZE has to be a multiple of  and would mean the number of logical records to be clubbed in a physical record to make one block of I/O But […]

One of interview question on Jcl, I faced was what is the maximum length of data that can be passed  as Parm from JCL to COBOL. As I have read somewhere that its 100 bytes of data that is maximum that can be passed from JCL to COBOL program, but then the interviewer confused me

Mainframe saves various details against a member or physical sequential file like version, user, create date etc. These details can however be changed by the following methods 1. Using the Rexx code /* rexx */                                                dsname      = “USERID.ABC.XYZ” /* Work PDS    */                               usrid            = “USER1”    /* User id to be updated

Comment/Un comment Multiple lines in COBOL code This tool can come handy if you have to do a lot of commenting and un commenting in a COBOL module. Doing it manually is not my way so here’s another freebie for all you guys hungry for mainframe tools. To use this clist you need to copy