how to increase the size of list structure for MIM control files

Products

• MIM Resource Sharing (MIM)

Issue/Introduction

You have a need to increase the size of your existing control files and looking for a way to dynamically accomplish this task without shutting down MIM.

A DISPLAY FILES command was issued to get  the status of the MIM control files.

Files 00 and 01 are XES control files and Files 02 and 03 are DASD control files

MIM0102I Control File Display:              
     File Unit Status  Volser          Data Set      
      00       IN-USE  facility1       structure_name_00    
      01       USABLE  facility2       structure_name_01    
      02  7ED7 USABLE  dasd_volser01   dsname_01   
      03  7ED2 USABLE  dasd_volser02   dsname_02   
  MIM0102I No Checkpoint Files Defined  

Resolution

Basic steps that should be completed are as follows:

1. MIGRATE CONTROLFILE=02. Issue command on 1 system only
2. DEALLOCATE the 2 list structure control files. Issuing command on every system
3. ALLOCATE the new new list structure files. Issuing command on every system
4. MIGRATE CONTROLFILE=00 to the new list structure control file

Alternate method to accomplish the same goal, where DASD control files may not be available.

1. MIGRATE CONTROLFILE=01 on one LPAR (ex: LPAR aaaa)
2. DEALLOCATE XESFILEID=00 on all LPARS (aaaa,bbbb,cccc,dddd)
3. Increase structure size for STRNAME=structure_name_00
4. ALLOCATE XESFILEID=00 STRNAME=structure_name_00 on all LPARS (aaaa,bbbb,cccc,dddd)
5. MIGRATE CONTROLFILE=00 if status = useable
6. DEALLOCATE XESFILEID=01 on all LPARS (1831,1841,1853,3811)
7. Increase structure size for STRNAME=structure_name_01
8. ALLOCATE XESFILEID=01 STRNAME=structure_name_01 on all LPARS (aaaa,bbbb,cccc,dddd)

Additional Information

Dynamically Increase MIM List Structure Size