How to investigate

Enter the following display command, which issues message ATR624I showing RRS units of recovery (UR) exceptions:

DISPLAY RRS,UREXceptions

ATR624I  hh.mm.ss 
         RRS UR EXCEPTION id | SYSTEM URID | WAIT FOR |
         sysname urid waitfortext

Message ATR624I displays all the units of recovery that are waiting for completion of other tasks on the specified system. A UR is the RRS representation of a transaction. Examine each exception to determine whether it represents a problem.

Identify persistent exceptions in the display by looking for units of recovery that show the same status in consecutive display output. This condition suggests a possible problem with the transaction. For example, look at the following D RRS,UREX example output.

D RRS,UREX                                                     
ATR624I 14.57.34  RRS UR EXCEPTION                             
SYSTEM   URID                                WAIT FOR          
SYS1     C4D2B56B7EB296E80000432201010000                      
    SYS2     C4D2B56B7EB3CA5C0000728801020000 RMGR2 PREPARE Exit
SYS1     C4D2B56B7EB29A5C00003E0601010000                       
    SYS2     C4D2B56B7EB3D4B800006B0A01020000 RMGR2 PREPARE Exit

This output from a DISPLAY command issued from system SYS1 lists the exception URID followed by the WAIT FOR text indented on the next line.

• The two SYS1 exception units of recovery are waiting for cascaded, subordinate units of recovery on SYS2.
• The units of recovery on SYS2 are waiting for resource manager RMGR2 to complete its PREPARE Exit.