Determining the level of z/OS

When you report problems to the IBM Support Center, you must provide the name and level of the operating system or systems. Learn how to determine this information when you cannot communicate with the console.

If you have communication with your console, you can use the DISPLAY command or you can query the dump using IPCS.

Use the console command DISPLAY IPLINFO or the IPCS command IPLINFO in a dump to obtain this information:

The date and time of the IPL
The release level of the system
The license value for the system
The contents of parmlib members IEASYSxx and IEASYMxx
LOADxx information used for the IPL
The architecture level of the IPL
The IODF (input/output definition file) device
The IPL device and volume serial
The status of MTL (manual tape library) tape devices.

For example:

D IPLINFO 
    IEE254I  11.14.07 IPLINFO DISPLAY 350 
     SYSTEM IPLED AT 01.15.39 ON 11/01/2007 
     RELEASE z/OS 01.09.00    LICENSE = z/OS 
     USED LOAD08 IN SYS0.IPLPARM ON ACB2 
     ARCHLVL = 2   MTLSHARE = N 
     IEASYM LIST = (X6,U6,0L,R8) 
     IEASYS LIST = (ST,LN) (OP) 
     IODF DEVICE ACB2 
     IPL DEVICE 3C2A VOLUME D83EL

If you cannot communicate through the console, use IPCS to perform the following steps to determine which system or systems you are using:

Use the IPCS subcommand CBFORMAT with the communications vector table (CVT) control block to determine the product level.

In the CBFORMAT CVT example output, the PRODN field indicates an MVS operating system level of SP7.0.7 and the PRODI field indicates the FMID as HBB7720.

CVT: 00FD48A0
   -0028  PRODN.... SP7.0.7   PRODI.... HBB7720   VERID....         
   -0006  MDL...... 2084      RELNO.... 038                         
   +0000  TCBP..... 00000218  0EF00.... 00FEA3EC  LINK..... 00FD481C
   +000C  AUSCB.... 00FD57E8  BUF...... 00000000  XAPG..... 00FE0380

Determine if the system is running as a uniprocessor or multiprocessor. In the IPCS STATUS WORKSHEET output, just above the heading PROCESSOR RELATED DATA, find the MVS Diagnostic Worksheet:

                                                       
                                                        
                             MVS Diagnostic Worksheet   
                                                        
Dump Title: W059 SLIP TRAP                              
                                                        
                                                        
CPU Model 2084 Version 00 Serial no. 220CBE Address 00  
Date: 09/15/2006     Time: 09:33:32.124515 Local        


 CSD  Available CPU mask: FFC0  Alive CPU mask: FFC00000  00000000
      Number of active CPUs: 0000000nn

The nn in 0000000nn indicates the number of processors running.

In this output example, there are 10 active processors.

CSD  Available CPU mask: FFC0  Alive CPU mask: FFC00000  00000000
  No. of active CPUs: 0000000A