Use CETR to control CICS tracing activity.
Start the transaction by typing CETR on the command line of your display, as follows:
CETR
Press the ENTER key.
You get the following display, with the values of your own system in each of the fields.
CETR CICS Trace Control Facility Type in your choices. Item Choice Possible choices Internal Trace Status ===> STARTED STArted, STOpped Internal Trace Table Size ===> 16 K 16K - 1048576K Auxiliary Trace Status ===> STOPPED STArted, STOpped, Paused Auxiliary Trace Dataset ===> B A, B Auxiliary Switch Status ===> NO NO, NExt, All GTF Trace Status ===> STOPPED STArted, STOpped Master System Trace Flag ===> ON ON, OFf Master User Trace Flag ===> ON ON, OFf When finished, press ENTER. PF1=Help 3=Quit 4=Components 5=Ter/Trn 6=JVM 9=Error List
Any of the input fields can be overtyped with the new values that you require. When you press ENTER, CETR issues the necessary commands to set the new values. If there are any errors, PF9 can be pressed to display the error messages. If there is only one short error message, it appears near the bottom of this display.
The following table shows the relationships between the auxiliary trace status, trace flag, and trace data set.
Auxiliary tracing status | Auxiliary trace flag | Auxiliary trace data set |
---|---|---|
Started | On | Open |
Paused | Off | Open |
Stopped | Off | Closed |
Three other main functions of CETR are:
Use caution when setting TRTABSZ
to a very high value because there must be enough MVS page storage to satisfy
both the request and DSA sizes. The system command DISPLAY ASM MVS can be used to display current information about status
and utilization of all MVS page data sets.
For information about the use of the various CETR options as an aid to problem determination, see the CICS® Problem Determination Guide.