Disabling SMF recording

System Management Facility (SMF) should always be active in order to record the LPAR activity. Nevertheless, some times whether for testing reasons or otherwise you may have the need to disable SMF.


To disable SMF:

  1. Edit the SMFPRMxx member in your Parmlib library and set it to NOACTIVE (the default should be ACTIVE).
  2. On SDSF (System Display and Search Facility) issue the following command:

/SET SMF=xx  (xx is the corresponding xx value of SMFPRMxx)


To enable SMF:

  1. Edit SMFPRMxx member in Parmlib and set it back to ACTIVE.
  2. On SDSF reissue the command:  /SET SMF=xx