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

52 Chapter 3
System Management
Transaction Manager
Transaction Manager
Overview
Transaction Manager (XM) is an integral part of the MPE/iX file
system. It provides a facility to log all the transactions that are done on
a file that is attached to XM via a system intrinsic. It ensures data
integrity by protecting such files across system crashes. Three new
enhancements are added to XM with 6.0 to provide improved
performance and reliability. The enhancements are the following:
• System Log Expansion
• Transaction Copy-forward
• Checkpoint Improvement
For more technical information, refer to "Transaction Manager" in
Chapter 10, "Technical Articles."