Use a high availability resource adapter
There are some considerations associated with using resource adapters in high availability environments.
This setting is available only to 1.5 Relational Resource Adapter (RRA) high availability compatible resource adapters with activate specifications.
Only one resource adapter in a high availability group is allowed to receive messages at a time across multiple servers. Only one resource can have endpoints active at once.
Only one resource adapter in an high availability group is allowed to be started at a time across multiple servers. That is, only one runtime RA instance may exist at once.
Using this resource adapter configuration options EnableHASupport and HACapability may allow users to try, as a corrective action to a problem, enabling or disabling participation in high availability on one or more resource adapters thought to be involved in a problem.
Related information
Relational resource adapters and JCA