With policy-based management, administrators specify the server pool (excluding the Generic and Free pools) in which the servers run. For example, a database administrator uses SRVCTL to create a server pool for servers hosting a database or database service. A clusterware administrator uses CRSCTL to create server pools for non-database use, such as creating a server pool for servers hosting an application.
Policy-based management:
Enables online server reallocation based on a defined policy to satisfy workload capacity requirements
Guarantees the allocation of required resources for critical work as defined by the policy
Ensures isolation where necessary, so that you can provide dedicated servers in a cluster for applications and databases
Enables policies to be configured to change pools in accordance with business needs or application demand, so that pools provide the required capacity at the right time
Server pools provide resource isolation to prevent applications running in one server pool from accessing resources running in another server pool. Oracle Clusterware provides fine-grained role separation between server pools. This capability maintains required management role separation between these groups in organizations that have clustered environments managed by separate groups.
See Also:
Oracle Clusterware Resource Reference for more information about resource attributes
Oracle Clusterware efficiently allocates servers in the cluster. Server pool attributes, defined when the server pool is created, dictate placement and prioritization of servers based on the IMPORTANCE server pool attribute.
See Also:
"Overview of Cluster Configuration Policies and the Policy Set" for details about managing server pools to respond to business or application demand