Persistent recording

Persistent recordings are those recordings that are started from SMIT with the option to specify the cut and retention. You can specify the number of days of recording to be stored per recording file (cut) and the number of days of recording to be retained (retention) before it can be deleted. Not more than one instance of Persistent recording of the same type (CEC or local) recording can be run in a system. When a Persistent recording is started, the recording command will be invoked with user-specified options. The same set of command line options used by this persistent recording will be added to inittab entries. This will ensure that the recording is started automatically on reboot or restart of the system.

Consider a system that is already running a Persistent local recording (binary or nmon recording format). If you want to start a new Persistent recording of local binary recording, the existing persistent recording must be stopped first using the Stop Persistent Recording option available under the Stop Recording option. Then a new persistent local recording must be started from Start Persistent local recording option. Starting Persistent recording will fail if a persistent recording of the same recording format is already running in the system. Because Persistent recording adds inittab entries, only privileged users are allowed to start Persistent recording.

For example, if the number of days to store per file is n, then a single file will contain a maximum of n days of recording. If the recording exceeds n days, then a new file will be created and all of the subsequent recordings will be stored in the new file. If the number of days to store per file is 0, the recording will be written to only one file. If the number of days to retain is m, then the system will retain the recording file that has data recorded within the last m days. Recording files generated by the same recording instance of the topasrec command that have recorded data earlier than m days will be deleted.

The default value for number of days to store per file is 1.

The default value for number of days to retain is 7.

                  SMIT options for Start Recording

                        Start Recording
Move cursor to desired item and press Enter.

Start Persistent local Recording 
Start Persistent CEC Recording
Start Local Recording
Start CEC Recording