Failure of the ucmmd Daemon to Start

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

To determine the cause of the problem, examine the following files:

• The UCMM reconfiguration log file /var/cluster/ucmm/ucmm_reconf.log

• The system messages file

The most common causes of this problem are as follows:

• The ORCLudlm package that contains the Oracle UDLM is not installed.

• An error occurred during a previous reconfiguration of a component Sun Cluster Support for Oracle Real Application Clusters.

• A step in a previous reconfiguration of Sun Cluster Support for Oracle Real Application Clusters timed out, causing the node on which the timeout occurred to panic.

To correct the problem, perform the appropriate recovery action for the cause of the problem and reboot the node on which ucmmd failed to start.