Mainframe, MVS and zOS Discussion

Actually, I read an online discussion eles where and someone in there states like this: REGION=0K requests only one-thousandth as much as REGION=0M. In some of my JCL members, I use variously REGION=0M or REGION=00M. I have JCL tailoring scripts that treat the constructs differently and substitute d...

So they are just same way of saying the same thing (to the system)?

Thanks Robert. I never thought that they are called as macros....thanks.

Thanks. I just read about ACB a bit. Is ACB a macro from operating system point of view?

Hi,

Is there any difference between Region=0M and Region=0K ? Is not it that in both the cases the all available storage will be allocated to the job or step?

Then is there any difference at system level?

Hi, As we could be able to do a refer back on the DCB of the input file to catalog a new output file for any PS dataset or a GDG as given below //SYSUT1 DD DSN=ABCD.TEST.INFILE, DISP=SHR //SYSUT2 DD DSN=TEST.OUTFILE, // DISP=(,CATLG,DELETE),UNIT=DISK, // SPACE=(CYL,(10,1),RLSE), // DCB=*.SYSUT1 Simi...

On google I found you.