Sun Cluster Data Service for Oracle RAC Guide for Solaris OS

Failure of the ucmmd Daemon to Start

The UCMM daemon, ucmmd, manages the reconfiguration of Sun Cluster Support for Oracle RAC. When a cluster is booted or rebooted, this daemon is started only after all components of Sun Cluster Support for Oracle RAC are validated. If the validation of a component on a node fails, the ucmmd fails to start on the node.

The most common causes of this problem are as follows:

For instructions to correct the problem, see How to Recover From a Failure of the UCMM or a Related Component.