Communicator 3000 MPE/iX Release 6.0 (Platform Software Release C.60.00) (30216-90269)

220 Chapter 10
Technical Articles
Transaction Manager
Since this solution remembers the dirty page ranges in a data structure
associated with each open file, it can't affect files that were open before
giving this request. However, it will come into effect for the files that
were open (for the first time) after giving the request. So the best way to
enable or disable the Checkpoint Improvement is to reboot the machine
after giving the command.
Backdating the OS
You can backdate the OS to an earlier version without any problems
since this solution doesn't put the file system in an advanced version or
make any non-backward compatible changes to the file system.