The security administrator and the SAT file manager are able to change SATLOG files with the CHANGE-SAT-FILE command. When doing so, the SAT file manager can also move SATLOG files to any available pubset and change the file attributes. When SATLOG files are closed, the catalog entry can be optimized with ACCESS=READ and SPACE=RELEASE(-9999).
Explicit changing
The current SATLOG file can be changed manually with a command if it becomes too large or if a change is needed for any other reason. SAT file management can use the CHANGE-SAT-FILE command to close the current SATLOG file and open a new one without any loss of information.
Implicit changing
The current SATLOG file is replaced implicitly - i.e. without involving SAT file management - whenever it is affected by a DMS error (including storage saturation). With certain DMS errors (e.g. ’no disk space available’, i.e. when the primary storage allocation has been used up and the secondary allocation is zero), it may not be possible to write the trailer record.
Periodic changing
The current SATLOG file can be changed automatically at fixed intervals with the aid of the REPEAT operand of the /CHANGE-SAT-FILE command. No data is lost in the process.Each time period begins with entry of the /CHANGE-SAT-FILE command, or by the /RESUME-SAT-LOGGING command if logging with SAT had been suspended.