Before you begin: You need to have access to the COFVLxx member of SYS1.PARMLIB.

Perform the following steps to cache UID and GID information in VLF.

1. Add these VLF options to the COFVLFxx member of SYS1.PARMLIB.

   CLASS NAME(IRRUMAP)
     EMAJ(UMAP)
   CLASS NAME(IRRGMAP)
     EMAJ(GMAP)
   CLASS NAME(IRRSMAP)
     EMAJ(SMAP)
    

   _______________________________________________________________

2. Start VLF, specifying the updated member.

   Example: In this example, the updated member is COFVLF33.

   START VLF,SUB=MSTR,NN=33

   _______________________________________________________________

When you are done, you have cached GID and UID information in VLF.

Because VLF is started after RACF® and OMVS, you might get a message from RACF during the IPL saying that running without VLF will cause slower performance. If VLF is being started, you can ignore this message.

For information about updating the VLF parmlib member COFVLFxx, see COFVLFxx.