MIM CMDPREFIX in sysplex only works on 1 lpar

Products

• MIM Resource Sharing (MIM)

Issue/Introduction

• Just upgraded to MIM 12.5 and also changed command prefix from @ to %
• This sysplex consists of 2 lpars
• The % command prefix works on 1 lpar but not the other. Results in IEE305I message

 

SYS1 lpar

%DISPLAY SYS
IEE305I %DISPLAY COMMAND INVALID

SYS2 lpar

%D SYS
%MIM0067I Command DISPLAY 150
%MIM0108I SYSTEMS DISPLAY
   INDEX ALIAS SYSTEM   RELATION STATUS      OPSYS     LAST ACCESS
    01    S1   SYS1     EXTERNAL MASTER      zOS  2021.293 07:47:53.16
    02    S2   SYS2     LOCAL    ACTIVE      zOS  2021.293 07:47:53.19
    03    TT   SYS3     EXTERNAL FREED

Notice that when displaying all the command prefixes setup in the plex only seeing SYS2 registered with it.

D OPDATA,PREFIX (console command)

Prefix   Owner    System   Scope   Remove Faildisp
+        DB2PMSTR SYS1     SYSPLEX NO     SYSPURGE
$        JES2     SYS2     SYSTEM  NO     SYSPURGE
$        JES2     SYS1     SYSTEM  NO     SYSPURGE
-        DB2TMSTR SYS1     SYSPLEX NO     SYSPURGE
%        MIMGR    SYS2     SYSTEM  NO     PURGE   ⇐ no entry shown for SYS1
@        AXR      SYS1     SYSTEM  NO     PURGE   
@        AXR      SYS2     SYSTEM  NO     PURGE

Environment

Release : 12.5
Component : MIM

Cause

Another product was currently using the desired command prefix at the time MIM was started and attempted to set CMDPREFIX

Looking through the MIMGR startup log from SYS1 the following messages were generated...

%MIM0137E CMDPREFIX % is already in use
MIM0639E Subsystem command interface disabled; use MODIFY MIMGR for commands

Resolution

Do one of the following:

1. Shutdown the other product that is using the desired command prefix and restart MIMGR to allow the command prefix to set and associated with MIMGR
2. Choose a different character that is not currently in use - Valid Characters for CMDPREFIX