Mainframe, MVS and zOS Discussion

Or you can use the F command in 3.4 or HMIG followed by HRECA. When freeing note that space will be freed to the allocation unit size so if you have a dataset allocated CYL(2,1) and you use one track then issuing a free will only free up the unused cylinder - you will still have 14 unused tracks al...

You can use JCL that references the data set with a RLSE parameter coded on the DD statement. However, be aware that the program you invoke must actually open the data set -- hence using IEFBR14 will not release any space from the data set as it does not open the data set. I'm not sure hy do you me...

I'm from India.

Hi,

The question is simple, How to free unused space of the dataset?

Let's assume, we have created a dataset with out using the RLSE in the JCL and now I want to release the unused SPACE allocated to the dataset then how can I do it? Can we write a separate JCL for that?

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