How to check who’s allocating a device unit

August 16, 2009 Rui Miguel Feio

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 […]

How to check if an LPAR is part of a SYSPLEX?

July 3, 2009 Rui Miguel Feio

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 […]

How to know which IODF file is currently being used?

July 3, 2009 Rui Miguel Feio

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:  […]

Update Linklist dynamically

June 29, 2009 Rui Miguel Feio

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 […]

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