CA Datacom/AD Environment › CA Datacom/DB Components and System Areas › Print, Statistics and Diagnostics Area (PXX)

Print, Statistics and Diagnostics Area (PXX)

CA Datacom/DB uses the Print, Statistics and Diagnostics Area (PXX) to hold various operational information. This information is used to produce printed reports, dumps, and traces. It also holds various system and job statistics that can be used to monitor and tune the system or to solve problems. The statistics are collected each time a batch job ends or CA Datacom CICS Services is shut down. These dumps, traces, and statistics are available for printing any time through the REPORT AREA=PXX option of DBUTLTY. For more information, see the CA Datacom/DB DBUTLTY Reference Guide.

CA Datacom/DB opens and clears the PXX as output each time the MUF is started. This data set also contains statistics information collected from the MUF and jobs.

The PXX can become full during the execution of the MUF. If it does, a message is posted and job statistics and return code dumps are no longer collected. This does not have an adverse effect on the actual execution of the MUF.

MUF startup option SYSOUT is the preferred mechanism to collect this kind of documentation. SYSOUT does not remove this requirement for a PXX data set but can reduce the size of the data set that the PXX is allocated for this DD name.

If the MUF startup option PXXSTATS is set to EOJPRT, the MUF writes the summary statistics for the MUF EOJ report in SYSPRINT DD and not to the PXX.

If you use these MUF startup options, PXXSTATS EOJPRT and SYSOUT, the PXX has very little activity, but the data set for the PXX is still required. Both of these MUF options are the recommended and best practice usage.