z/OS Diagnostic Data Collection and Analysis

17.3. Tracing to the external writer

To have packet trace or CTRACE data written to an external writer data set, a writer proc first needs to be created. This procedure must either be in SYS1.PROCLIB or in a library concatenated in the master JCL. The following is a sample of the writer procedure:

//CTWTR1 PROC
//IEFPROC  EXEC PGM=ITTTRCWR
//TRCOUT01 DD DSNAME=IBMUSER.CTRACE1,VOL=SER=xxxxxx,
//         UNIT=xxxxx,SPACE=(CYL,(xxx),,CONTIG),
//         DISP=(NEW,CATLG)
//SYSPRINT DD SYSOUT=*

17.3.1. Starting an external writer

If you do not want to have traces written internally to the TCPIP dataspace (TCPIPDS1) you can start the external writer to the CTRACE component. This writer can be used for multiple components, for instance packet trace (SYSTCPDA) and ...