To ensure availability of the persistent state database, you can install a clustered database setup and enable cluster failover handling.
This is available for clustered Oracle databases only. |
Concepts
Important services should not hang, if the persistent state database is not available. So, in case the persistent state database becomes inoperative in a clustered setup, it will automatically be replaced by a compensatory database of the cluster.
Steps:
- Install Oracle cluster setup
Before you can enable cluster failover handling, you need to install a clustered setup on your Oracle database. - Enable cluster failover handling
Enable the failover handling as described below.
Enabling Cluster Failover Handling
You can enable cluster failover handling in the xUML service composite of the persistent state service. It is governed by to tagged values:
| Tagged Value | Type | Description | Value | Description |
|---|---|---|---|---|
| Switch Over Enabled | Boolean | false (default) | failover mechanism not enabled | |
| true | failover mechanism enabled | |||
| Switch Over Retry Timeout | Integer |
Refer to Persistent State Components for more information on persistent state settings on the composite.