Finding the active save set

To analyze data communication (DC) problems, you need to find the active save set at the time of abend.

Use the following steps to locate the active save set.

Procedure

  1. Locate the registers at entry to abend (error registers). Register 13 points to the address of the active save set.
  2. The active save sets begin under eye catcher *** SAVE AREA SET***.
  3. Find the save area (SA) address that matches the address in error register 13.

Example of a Save Area Set

If error register 13 contains 320548, you would analyze the save set flow as shown the following figure. The registers in this save set are the registers that are saved on entry to each module.

***SAVE AREA SET****

     EP DFSICIO0
     SA 22FE930

     EP DFSCFEI0
     SA 22E930

     EP DFSCFEP0
     SA 22E990

     EP DFSCIOC0
     SA 229490

     EP DFSQMGR0
     SA 22D990

     EP DFSAOS80
     SA 320548