Combining Z Abend Investigator real-time reports

By default, all real-time reports are written to separate JES spool files. This process is generally considered advantageous for subsystems, such as CICS®, IMS™ message-processing regions, or WLM-managed DB2®, where multiple reports can be written before the subsystem is restarted.

If, for any reason, you prefer writing the reports to a single spool file, then add an HFZREPRT DD statement to the job or startup procedure, for example:
//HFZREPRT DD SYSOUT=*