Displaying the status of system-wide limits specified in BPXPRMxx

You can display information about current system-wide limits, including current usage and high-water usage, with the DISPLAY OMVS,LIMITS command:

DISPLAY OMVS,L
BPXO051I 14.05.52 DISPLAY OMVS 904
 OMVS     0042 ACTIVE          OMVS=(69)
 SYSTEM WIDE LIMITS:         LIMMSG=NONE
                   CURRENT  HIGHWATER     SYSTEM
                     USAGE      USAGE      LIMIT
 MAXPROCSYS              1          4        256
 MAXUIDS                 0          0        200
 MAXPTYS                 0          0        256
 MAXMMAPAREA             0          0        256
 IPCMSGNIDS              0          0        500
 IPCSEMNIDS              0          0        500
 IPCSHMNIDS              0          0        500
 IPCSHMSPAGES            0          0     262144
 IPCMSGQBYTES          ---          0     262144
 IPCMSGQMNUM           ---          0      10000
 IPCSHMMPAGES          ---          0        256
 SHRLIBRGNSIZE           0          0   67108864
 SHRLIBMAXPAGES          0          0       4096
 MAXUSERMOUNTSYS        15         20        100   
 MAXUSERMOUNTUSER        7          8         10 
 MAXPIPES               28         51      15360

An * displayed after a system limit indicates that the system limit was changed via a SETOMVS or SET OMVS= command. For the sysplex-wide limits, the command can be issued from any of the systems in the shared file system configuration environment, and the change can also be caused by subsequent OMVS initialization on the other systems.

The display output shows for each limit the current usage, high-water (peak) usage, and the system limit as specified in the BPXPRMxx member. The displayed system values might be the values as specified in the BPXPRMxx member, or they might be the modified values resulting from the SETOMVS or SET OMVS commands.

You can also use the DISPLAY OMVS,LIMITS command with the PID= operand to display information about high-water marks and current usage for an individual process.

The high-water marks for the system limits can be reset to 0 with the D OMVS,LIMITS,RESET command. High water marks for process limits cannot be reset.