CRSCTL Overview CRSCTL is an interface between you and Oracle Clusterware, parsing and calling Oracle Clusterware APIs for Oracle Clusterware objects. Oracle Clusterware 11g release 2 (11.2) introduces cluster-aware commands with which you can perform check, start, and stop operations on the cluster. You can run these commands from any node in the cluster on another node in the cluster, or on all nodes in the cluster, depending on the operation. You can use CRSCTL commands to perform several operations on Oracle Clusterware, such as: Starting and stopping Oracle Clusterware resources Enabling and disabling Oracle Clusterware daemons Checking the health of the cluster Managing resources that represent third-party applications Integrating Intelligent Platform Management Interface (IPMI) with Oracle Clusterware to provide failure isolation support and to ensure cluster integrity Debugging Oracle Clusterware components