Using Serviceguard Extension for RAC, 2nd Edition, February 2005 Update
Table Of Contents
- Using Serviceguard Extension for RAC
- 1 Introduction to Serviceguard Extension for RAC
- 2 Serviceguard Configuration for Oracle RAC
- Planning Database Storage
- Installing Serviceguard Extension for RAC
- Configuration File Parameters
- Creating a Storage Infrastructure with LVM
- Building Volume Groups for RAC on Mirrored Disks
- Building Mirrored Logical Volumes for RAC with LVM Commands
- Creating RAC Volume Groups on Disk Arrays
- Creating Logical Volumes for RAC on Disk Arrays
- Oracle Demo Database Files
- Displaying the Logical Volume Infrastructure
- Exporting the Logical Volume Infrastructure
- Installing Oracle Real Application Clusters
- Cluster Configuration ASCII File
- Creating a Storage Infrastructure with CVM
- Initializing the VERITAS Volume Manager
- Preparing the Cluster for Use with CVM
- Starting the Cluster and Identifying the Master Node
- Converting Disks from LVM to CVM
- Initializing Disks for CVM
- Creating Disk Groups for RAC
- Creating Volumes
- Oracle Demo Database Files
- Adding Disk Groups to the Cluster Configuration
- Using Packages to Configure Startup and Shutdown of RAC Instances
- Starting Oracle Instances
- Creating Packages to Launch Oracle RAC Instances
- Configuring Packages that Access the Oracle RAC Database
- running cluster:adding or removing packages
- Writing the Package Control Script
- Using Serviceguard Manager to Write the Package Control Script
- Using Commands to Write the Package Control Script
- Customizing the Package Control Script
- Optimizing for Large Numbers of Storage Units
- Customizing the Control Script for RAC Instances
- Configuring an Oracle RAC Instance Package
- Using Serviceguard Manager to a Configure Oracle RAC Instance Package
- Enabling DB Provider Monitoring
- 3 Maintenance and Troubleshooting
- Reviewing Cluster and Package States with the
- Managing the Shared Storage
- Removing ServiceGuard Extension for RAC from a System
- Monitoring Hardware
- Adding Disk Hardware
- Replacing Disks
- Replacement of I/O Cards
- Replacement of LAN Cards
- Monitoring RAC Instances
- A Blank Planning Worksheets
Maintenance and Troubleshooting
Reviewing Cluster and Package States with the cmviewcl Command
Chapter 3 73
Cluster Status
The status of a cluster may be one of the following:
• Up. At least one node has a running cluster daemon, and
reconfiguration is not taking place.
• Down. No cluster daemons are running on any cluster node.
• Starting. The cluster is in the process of determining its active
membership. At least one cluster daemon is running.
• Unknown. The node on which the cmviewcl command is issued cannot
communicate with other nodes in the cluster.
Node Status and State
The status of a node is either up (active as a member of the cluster) or
down (inactive in the cluster), depending on whether its cluster daemon
is running or not. Note that a node might be down from the cluster
perspective, but still up and running HP-UX.
A node may also be in one of the following states:
• Failed. A node never sees itself in this state. Other active members
of the cluster will see a node in this state if that node was in an
active cluster, but is no longer, and is not halted.
• Reforming. A node is in this state when the cluster is re-forming.
The node is currently running the protocols which ensure that all
nodes agree to the new membership of an active cluster. If agreement
is reached, the status database is updated to reflect the new cluster
membership.
• Running. A node in this state has completed all required activity for
the last re-formation and is operating normally.
• Halted. A node never sees itself in this state. Other nodes will see it
in this state after the node has gracefully left the active cluster, for
instance with a cmhaltnode command.
• Unknown. A node never sees itself in this state. Other nodes assign a
node this state if it has never been an active cluster member.
Package Status and State
The status of a package can be one of the following: