Manage Clusters

Create clusters, manage load profiles, add instances to a cluster, display properties of clusters, and manage routes.

To manage clusters, you must have connect to permissions granted in the master database. connect to permissions can be granted to a role, user, or group.

The syntax is:

grant connect to someone

where someone is a role, a user, or a group.

In the cluster environment, each machine is referred to as a node, and each server as an instance. Connected instances form a cluster, working together to manage a single set of databases on the shared disks. In each case, the instances present as a single system, with all data accessible from any instance. The Cluster Edition assigns server process IDs (spids) that are unique to the cluster, so the spid identifies a single process across all instances in the cluster, with all data accessible from any instance.

You can configure a cluster to run multiple servers as a shared-disk or private cluster. You can also create a shared cluster in Veritas Cluster Server (VCS) mode.

You cannot mix different operating systems or hardware architectures. However, each node can contain a different number of processors, cores, and RAM. This difference in configuration can be accounted for within the cluster configuration file (and subsequently within the Workload Manager) once the Cluster Edition is installed and your cluster is built.

See the Installation Guide Cluster Edition for your platform for information about installing the software, platform support, and system requirements.

See the Clusters Users Guide for detailed information about the features available in the Cluster Edition.

Starting the SCC agent for a Cluster
(SAP ASE versions 15.7 ESD #1 and later) The SCC agent enables the distributed management of the cluster.
Starting the Unified Agent for a Cluster
(SAP ASE versions 15.7 and earlier) The Unified Agent enables the distributed management of the cluster.
Preparing to Create a Cluster
Prerequisites for creating a cluster.
Creating a Cluster
Create and configure a shared-disk cluster.
Registering a Cluster
Registering a cluster allows you to manage the cluster in SAP Control Center as a resource.
Registering the Agent and Starting a Cluster
Once a cluster is registered, you can authenticate the agent, start the cluster, and authenticate the cluster.
Displaying Cluster Configuration Values
Display or modify cluster configuration values.
Starting a Cluster
Start a cluster from the Administration Console after the agent is authenticated to see a log trace with any warning and error messages.
Stopping a Cluster
Shut down a cluster immediately, or wait for transactions to complete.
Dropping a Cluster
Dropping a cluster removes the cluster and associated devices, logs, and files.
Viewing a Cluster Log
View information about the success or failure of each start-up attempt of a cluster and its operations.
Cluster Properties
Use the Cluster Properties window to view cluster and agent information, to configure the agent, and to stop or restart the cluster.
Manage Logical Clusters
The logical cluster is an abstract representation of one or more instances in a physical shared-disk cluster used to manage workload, failover, and client application access to the cluster. You can manage workloads running on clusters with separate routing, load balancing, and failover rules.
Manage Cluster Instances
Add instances to a cluster or change the status of current cluster instances.
Manage Load Profiles
Load profiles let you define the operating criteria for a logical cluster.
Manage Routes
Routes allow you to direct client connections to specific logical clusters.
Manage Auxiliary Servers
Configure Backup Servers and XP Backup Servers for clusters.

Parent topic: Clusters