When there is a stopped unit, system switchovers for the system manager unit can be performed if the following operands are specified:

• pd_start_level = 1
• pd_start_skip_unit = unit-identifier-of-stopped-unit
• pd_reduced_check_time = wait-time-until-notification-of-reduced-activation-startup

The following table lists the values that can be specified for these operands, and it describes the actions HiRDB takes during a system switchover.

Table 26-33 Operands related to reduced activation and actions HiRDB takes during a system switchover

Condition		Actions HiRDB takes when a system switchover occurs for the system manager unit
pd_start_level specification value	pd_start_skip_unit specification#
0 (default value)	--	If there is a stopped unit, a system switchover for the system manager unit fails.
1	Not specified	Even if there is a stopped unit, a system switchover for the system manager unit executes. However, a wait occurs for receipt of a startup processing completion notification from each unit. This notification wait time is specified in the pd_reduced_check_time operand (the default value is 20 minutes).
	Specified	Even if there is a stopped unit, a system switchover for the system manager unit executes. No notification wait time occurs.

Legend:

--: Need not be specified.

#

When you specify the pd_start_skip_unit operand, you must terminate HiRDB.

Reference note

• When a system switchover for the system manager unit occurs, a check is made for whether front-end servers and back-end servers are active at the system manager unit at the switching destination. This is why a wait occurs for receipt of a startup processing completion notification from each unit. If a system switchover occurs while there are units that are stopped, the operating status of such units cannot be determined. As a result, the system switchover might fail or take a long time to complete.
• If any of the following conditions is not satisfied, a system switchover for the system manager unit fails:
  A front-end server is active.
  A back-end server is active.
  A dictionary server is active.