August 2009 – Rui Miguel Feio

Move a dataset that is in Linklist to a different volume

27th August 2009 Rui Miguel Feio

Sometimes we come across the need of moving to a different volume a dataset that is in Linklist. We must remember that moving a dataset does not change the list of datasets defined to the current concatenation in any way – the dataset name remains the same -. The system […]

Linklist update – Why we need to stop LLA and unallocate the LNKLST

26th August 2009 Rui Miguel Feio

A couple of months ago I’ve written a post on how to dynamically update the Linklist but some questions have been risen on why we need to stop the LLA and unallocate the Linklist. Each Linklist dataset has an ENQ from both XCFAS and LLA. An ENQ on a LNKLST […]

Displaying Page Dataset Information

20th August 2009 Rui Miguel Feio

As you may know, Page datasets are defined on the IEASYSxx member of the Parmlib but if you want to avoid the hassle of checking this member or if you would like to obtain more information about them, you can use the following MVS commands to display Page Dataset information: […]

How to display the Linklist concatenation

19th August 2009 Rui Miguel Feio

Whoever works with mainframes knows that to be able to o know what the Linklist concatenation is is one of the most important things in the job. There is a very simple MVS command for the effect: D PROG,LNKLST Here’s an example of what this command returns: RESPONSE=TST1 CSV470I 12.29.52 […]

Unmounting a file system with the Remount parameter

19th August 2009 Rui Miguel Feio

UNMOUNT FILESYSTEM(SYS2.OMVS.EXAMPLE) REMOUNT We all know that the UNMOUNT command removes a file system from the file system hierarchy but when we use the REMOUNT parameter with the UNMOUNT command we may be introducing confusion in some minds. Unmounting a file system and remounting it? Makes no sense? Well that […]