25.16 Actions to be taken by the HiRDB administrator when errors occur

Organization of this section
(1) System processing and actions taken by the HiRDB administrator when errors occur
(2) Notes on using VERITAS Cluster Server
(3) When the standby-less system switchover (1:1) facility is used
(4) When the standby-less system switchover (effects distributed) facility is used

(1) System processing and actions taken by the HiRDB administrator when errors occur

Table 25-51 lists the system processing and the actions to be taken by the HiRDB administrator when errors occur.

Table 25-51 System processing and the HiRDB administrator's actions in the event of an error (using the system switchover facility)

ErrorSystem processingHiRDB administrator's action
A server failure occurred (only HiRDB terminated abnormally).Server modeAs specified in the switchtype operand1 of HA monitor or Hitachi HA Toolkit Extension.Check the cause of the error on the basis of the output message. Refer to 18. Error Handling Procedures,and take appropriate action.
Monitor modeDoes not perform system switchover. Restarts HiRDB on the system resulting in the error.
A system failure occurred.Performs system switchover and restarts HiRDB on the switchover destination system. However, depending on the type of system failure, system switchover may not be performed. A cluster software specification determines whether or not system switchover will be performed; for details, see the cluster software documentation.Check the cause of the error on the basis of the output message. Refer to 18. Error Handling Procedures or the applicable manual, and take appropriate action.
HiRDB restart failedServer modeAs specified in the switchtype operand1 of HA monitor or Hitachi HA Toolkit Extension.
Monitor modeAs specified in the pd_ha_restart_failure operand.2
System switchover failedTerminates the system.
Note
The information inherited after system switchover is the same as when HiRDB is restarted. For details on the information that is inherited after a HiRDB restart, see 18.1.5 Information inherited during a HiRDB restart.
1 Processing depends on the specification of the switchtype operand. For details about HA monitor's switchtype operand, see 25.6 HA monitor preparations; for details about the switchtype operand of Hitachi HA Toolkit Extension, see 25.12 Hitachi HA Toolkit Extension preparations (server mode only).
2 If you register a command for switching the cluster software system in this operand, the system will be switched over automatically when restart processing fails. The system stops operating if this operand is omitted. In such a case, you must enter a command for switching the cluster software system and then perform system switchover.

(2) Notes on using VERITAS Cluster Server

(a) Actions to take when system switchover occurs

When system switchover occurs, VERITAS Cluster Server takes all resources on the running system offline, starting with the parent resource, and then places the resources on the standby system online starting with the child resources. If an unexpected system switchover occurs, take the following actions as necessary to return the running system to its original server machine:

(b) Actions to take when HiRDB terminates abnormally

When HiRDB terminates abnormally, restart HiRDB on the running system. Also, when a dummy file for a HiRDB_x type resource is deleted, the resource is placed in error status and HiRDB terminates forcibly. Actions to take are described below:

Procedure
  1. Use a VERITAS Cluster Server command to release the error status of the resource.
  2. Use a VERITAS Cluster Server command to bring the resource online; HiRDB restarts.

(3) When the standby-less system switchover (1:1) facility is used

After resolving the error, use a planned system switchover to switch the system back to the normal BES unit (return to normal status from alternating status). For details about planned system switchover, see 25.14(2) Standby-less system switchover (1:1) facility.

(4) When the standby-less system switchover (effects distributed) facility is used

After resolving the error, use a the planned system switchover to switch the system back to the regular unit (return to normal status from standby status). For details about planned system switchover, see 25.14(3) Standby-less system switchover (effects distributed) facility.