The following explanation assumes a grouped system switchover configuration set up in HiRDB and OpenTP1.

To perform a grouped system switchover, you must use the group operand of HA Monitor to define a grouped system switchover configuration. The following explanation assumes that exchange is specified in the group operand. For details about how to define a grouped system switchover configuration, see the manual High-Availability System Monitoring Facility. The following table lists the system processing when a grouped system switchover is performed (in the server mode).

Table 26-38 System processing when a grouped system switchover is performed (in the server mode)

Error description		System processing
An error occurred that prevents hardware from restarting, or an error occurred when the operating system or HA Monitor was restarting (a system failure occurred).		Performs a system switchover. Also switches over OpenTP1 and HiRDB.
An error occurred in OpenTP1 and OpenTP1 terminated abnormally.	switchtype=restart	Restarts OpenTP1 on the running system. Performs a system switchover if OpenTP1 cannot be restarted. When a system switchover is performed in OpenTP1, a grouped system switchover is also performed in HiRDB.
	switchtype=switch	Performs a system switchover. When a system switchover is performed in OpenTP1, a grouped system switchover is also performed in HiRDB.
	switchtype=manual	Does not perform a system switchover. Restarts OpenTP1 on the running system.
An error occurred in HiRDB and HiRDB terminated abnormally.	switchtype=restart	Restarts HiRDB on the running system. Switches systems if HiRDB cannot be restarted. When a system switchover is performed in HiRDB, a grouped system switchover is also performed in OpenTP1.
	switchtype=switch	Performs a system switchover. When a system switchover is performed in HiRDB, a grouped system switchover is also performed in OpenTP1.
	switchtype=manual	Does not perform a system switchover. Restarts HiRDB on the running system.

When you use HiRDB Datareplicator, you must perform grouped system switchovers with both HiRDB and HiRDB Datareplicator. In such a case, use the group operand of HA Monitor to define HiRDB and HiRDB Datareplicator in the same server group. For details about how to define a grouped system switchover configuration, see the manual High-Availability System Monitoring Facility. For details about the operations involved in performing a system switchover when using HiRDB Datareplicator, see the HiRDB Datareplicator Version 8 Description, User's Guide and Operator's Guide.

Automatic system switchovers

When an error occurs on the running system, the system switches automatically to the standby system. No action needs to be taken by the HiRDB administrator or HiRDB Datareplicator administrator.

Planned system switchovers

You can use HA Monitor's monswap command to perform a planned system switchover in HiRDB and HiRDB Datareplicator.

When an error occurs in HiRDB Datareplicator

If HiRDB Datareplicator independently terminates abnormally, a system switchover is not performed because HiRDB Datareplicator restarts on the running system. Note that, if HiRDB Datareplicator independently terminates abnormally, a grouped system switchover cannot be performed on either HiRDB or HiRDB Datareplicator.

If you define a grouped system switchover configuration in advance, you can use the planned system switchover functionality of HA Monitor's monswap command to perform grouped system switchovers.