X'CC' trace entry

The X'CC' trace entry

 TRACE ID   = X'CC'
 
       word 0 — byte 1 - X'CC' - Lock request handler 
                         (DFSLRH00) entry
                byte 2 - PST number (see note 1 below)
                bytes 3-4 - Trace sequence number               
       word 1 - Block number on RBA (see note 2 below) 
       word 2 - PSTTOKEN - The object of the request
       word 3 - PSTLRPRM - These bytes are described in the
                PSTLRPRM chart below.  The first byte equates to byte
                0, the second to byte 1, and so on (see note 3 below).
       word 4 - bytes 1-2 - Subcode from lock manager (IRLM) or PRMFBK 
                feedback for DFSFXC10. 
                byte 3 - Register 15 return code
                byte 4 - Return code from lock manager or DFSFXC10
                         (Use DFSFXC10 return codes from the X'CA'
                         trace entry, note 6) (See note 5 below)              
       word 5 - byte 1 - PSTLRSUB-DFSLRH00 abend subcode (see note 7 below)
                bytes 2-4 - PSTABTRM - System abend code (see note 6 below)
       word 6 - PSTDSGA - Address of the DSG used by this PST
       word 7 - byte 1 - Return register
                bytes 2-4 - Address within module where DFSLRH00 was called
      

You might need the X'CC' trace entry for several problem types including:

• Task was allowed to process even though a wait was requested.
• DFSLRH00 abends (such as U0855, U03302).
• Request not satisfied. These problems might indicate an internal IMS error.

The following table shows the PSTLRPRM chart (bytes 0 through 3).