Tech – Mainframe

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 […]

An LPAR can have more then one PARMLIB dataset defined to it’s concatenation. The PARMLIB concatenation is defined on the LOADxx member and we can use the MVS command “D PARMLIB”to list it. Example: “D PARMLIB” command returns: RESPONSE=LP1T IEE251I 08.54.47 PARMLIB DISPLAY 825 PARMLIB DATA SETS SPECIFIED AT IPL […]