If an error occurs with OpenTP1 in the online mode (in the running system), standby OpenTP1 can be selected to continue online operation. After system switchover, OpenTP1 in standby system now becomes active OpenTP1.

Three procedures are available for exchanging between standby and running OpenTP1s.

• Automatic system switchover
• Planned system switchover
• Grouped system switchover

Only the OpenTP1 files on the character type special file on a common disk can be inherited at system switchover.

Organization of this section

9.3.1 Automatic system switchover

9.3.2 Planned system switchover

9.3.3 Grouped system switchover