CICS VSAM Transparency for z/OS, Version 1.2


Activating the trace in CICS

To activate the trace facility in a CICS region, run the supplied transaction VTMT. The following screen is displayed:

Figure 1. VTMT trace parameter screen
 
 ---------------------------  CICS VT TRACE STATUS  ----------- this termid => 0037
                                                                               
     DIMS BEING TRACED:     DIM0001_ DIM0002_ DIM0012_ ________ ________       
                            ________ ________ ________ ________ ________       
                                                                               
     TRACE POINTS ACTIVE:   01   05   07   __   __   __   __   __   __         
                                                                               
     DUMP POINTS ACTIVE:    __   __   __   __   __   __   __   __   __         
                                                                               
     TERMIDS BEING TRACED:  0037 0051 ____ ____ ____                           
                            ____ ____ ____ ____ ____                           
                                                                               
               s ACTIVATE TRACE    _ DE-ACTIVATE TRACE                         
                                                                               
   Positions of the standard Trace Points :-                                   
   01 - start of VSAM call                 06 - after Field Build Exit           
   02 - Reserved                           07 - after DB2 Column built           
   03 - DB2 Table Cursor Open              08 - VSAM return Code                     
   04 - DB2 Table Read                     09 - DB2 ISRT / DLET / REPL           
   05 - DB2 Table Cursor Close                                                   
                                                                               
  MAKE CHANGES AND ENTER 'S' TO SELECT ACTION                                  
  CLEAR:END SESSION                                                            
  TRACE IS ACTIVE
 

You must specify at least one DIM and one termid. Alternatively, you can specify *ALL as either the DIM or termid. Use termid *ALL to trace non-terminal related transactions.

Using *ALL for DIM and termid at the same time may result in significant trace output depending on your CICS® workload, and may cause some degree of system degradation while the trace is active.

Activate and de-activate trace by selecting either ACTIVATE TRACE or DE-ACTIVATE TRACE options. The current trace status is displayed at the foot of the screen.

In most cases, trace points 01, 03, 04, 05, and 08 provide the most useful diagnostics. Avoid using trace points 06 and 07 unless you need to capture field-level information.

The output from the trace is sent to the CICS destination VIDT, which is defined during CICS VT configuration and setup. This destination relates to the DD statement VIDTRC in your CICS JCL, which can be either a 133-byte sequential data set or SYSOUT.





Last updated: December 6, 2013 20:43:20

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Timestamp icon Last updated: Friday, 6 December 2013


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