What is HAManager

WebSphere V6 introduces a new concept for advanced failover and thus higher availability, called the High Availability Manager (HAManager). The HAManager enhances the availability of WebSphere singleton services like transaction services or JMS message services. It runs as a service within each application server process that monitors the health of WebSphere clusters. In the event of a server failure, the HAManager will failover the singleton service and recover any in-flight transactions.

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