MVS

Let’s say for instance that you have a DASD volume (TSTCT1) and you would like to know who’s using it (allocating it). In order to do this we first need to know the unit address of said device: /D U,VOL=volume_name In our example: /D U,VOL=TSTCT1 Result: RESPONSE=TST1 IEE457I 09.53.10 UNIT […]

If you need to check if an LPAR is part of a SYSPLEX or the SYSPLEX name it belongs to simply issue the command: D XCF Example: D XCF Returns: RESPONSE=TST1 IXC334I  09.32.10  DISPLAY XCF 309 SYSPLEX TESTPLEX:   TST1 TST2 TST3 Notes: the command was issued from LPAR TST1 in […]

If for whatever reason you need to know which IODF file is currently being used by the system, just issue the command: D IOS,CONFIG Example: D IOS,CONFIG Returns: RESPONSE=TST1 IOS506I 10.18.20 I/O CONFIG DATA 118 ACTIVE IODF DATA SET = SYS1.IODF19 CONFIGURATION ID = TEST01         EDT ID = 00 TOKEN:  […]

Countless times I’ve been asked if I remember the command to dynamically change the APF list. Well, I’ve decided to include it here so that next time someone asks me I can tell them to come here. 🙂 Now, this can be done in many different ways but I normally […]

Some people dread the idea of having to update the Linklist dynamically but in fact it’s a very simple process: Update the PROGxx member that your system uses from PARMLIB: Add/remove libraries as required Change the LNKLSTnn reference to LNKLSTnn+1 Issue the following MVS commands: SETPROG LNKLST,UNALLOCATE P LLA SET […]