How to change the threshold percentage full message "TRACWARN - Database Area AT xx%".
To change message "TRACWARN - Database Area AT xx%", you will need to use the z/OS modify command:
'F Jobtrac,WARNPCT=nn"
'nn' is the percentage you want to specify. The nn must be numeric, greater than 0, and less than 100.
Leading zeros are not required and the default is 80.
For example to changed to 95%, you would issue z/OS modify command 'F jobtrac,WARNPCT=95'.
This is described in detail in the CA Jobtrac Job Management Operator Guide, Chapter 'Using Operator Commands'.