SATCP (SAT Control Program) is that part of SAT that is designed for monitoring events and alarms. The SATCP subsystem is generated and started automatically by DSSM during system startup. This means that SATCP is available before SYSTEM READY. In normal operation, SATCP is active and writes its audit data to the first new SATLOG file of the session. The name of the file is formed by the default name plus the sequence number 1. In addition, the security administrator can interrupt and subsequently resume logging with SAT with the /HOLD-SAT-LOGGING and /RESUME-SAT-LOGGING commands.
If a DMS error prevents the first SATLOG file from being opened, SATCP is still loaded but set to the HOLD state. This is indicated by a warning sent to the console. In that case SAT logging must be restarted with the /RESUME-SAT-LOGGING command.
If a previous session was terminated abnormally, SATCP checks whether the SATLOG files have been closed correctly and verifies their contents if necessary.
The security administrator may suspend SATCP by means of the /HOLD-SAT-LOGGING command; in this case all event logging is stopped and the current SATLOG file is closed. SAT does not then log any events, but when a /RESUME-SAT-LOGGING command is issued it resumes logging with precisely the same parameters as before the /HOLD-SAT-LOGGING command.
The SATCP subsystem is automatically deactivated at system shutdown. It cannot be deactivated by means of the /STOP-SUBSYSTEM command or a similar macro.