< Previous  | TOC | Index | Next  >

About VCS configuration file after SF Oracle RAC installation

Note the following information about the VCS configuration file after the SF Oracle RAC installation:

• The "include" statements list types files for VCS (types.cf), CFS (CFSTypes.cf), and CVM (CVMTypes.cf). These files are in the /etc/VRTSvcs/conf/config directory. The types file for the Oracle enterprise agent (OracleTypes.cf) is also located in /etc/VRTSvcs/conf/config. These files define the agents that control the resources in the cluster.
  • The VCS types include all agents bundled with VCS. Refer to the Veritas Cluster Server Bundled Agents Reference Guide for information about VCS agents.
  • The CFS types include CFSMount and CFSfsckd.

    The CFSMount agent mounts and unmounts the shared volume file systems.

    The CFSfsckd types are defined for cluster file system daemons and do not require user configuration.

  • The CVM types include the CVMCluster, CVMVxconfigd, and CVMVolDg.

    The CVMCluster agent, which is automatically configured during installation, starts CVM in the cluster by autoimporting shared disk groups, controls node membership in the cluster, and defines how nodes communicate the state of volumes.

    See SF Oracle RAC agents

    The CVMVxconfigd agent starts and monitors the vxconfigd daemon; this daemon maintains disk and disk group configurations, communicates configuration changes to the kernel, and modifies configuration information stored on disks.

    The CVMVolDg agent starts the volumes in a shared disk group, sets activation modes, and monitors specified critical volumes.

  • The Oracle enterprise agent types includes definitions for the Oracle agent and the Netlsnr agent. The Oracle agent monitors the resources for an Oracle database, and the Netlsnr agent manages the resources for the listener process.
• The cluster definition, with the cluster name provided during installation (for example, rac_cluster101), includes the names of users and administrators of the cluster. The UseFence = SCSI3 attribute is not automatically present; you must manually add it after the installation.

  See Modifying VCS configuration to enable I/O fencing

• The main.cf now includes the cvm service group. This group includes definitions for monitoring the CFS and CVM resources. The CVMCluster agent resource definition indicates the nodes use GAB for messaging operations.
• The cvm group has the parallel attribute set to 1. This value enables the resources to run in parallel on each node in the system list.