Home » Oracle » 1z0-058 » Which two resource types are supported by the Oracle Grid Infrastructure for this purpose?
Your Oracle Grid Infrastructure environment is to be upgraded to version 11g release 2 and will continue to be used to provide high availability for a web-based application.
You are planning the definition of the application attributes for both the required VIP application and for the application itself. The application is normally active on only a single cluster node, but is failed over to another node if required.
Which two resource types are supported by the Oracle Grid Infrastructure for this purpose?
A. the cluster_resource resource type for new resource definitions
B. the global_resource resource type for new resource definitions
C. the local_resource resource type for new resource and upgraded resource definitions
D. the application resource type for backward compatibility for upgraded resource definitions
E. the Singleton_resource resource type for backward compatibility for upgraded resource definitions
Correct Answer: AD
Explanation/Reference:
Resource Types
Generally, all resources are unique but some resources may have common attributes. Oracle Clusterware uses resource types to organize these similar resources. Benefits that resource types provide are:
Manage only necessary resource attributes
Manage all resources based on the resource type
Every resource that you register in Oracle Clusterware must have a certain resource type. In addition to the resource types included in Oracle Clusterware, you can define custom resource types using the Oracle Clusterware Control (CRSCTL) utility. The included resource types are:
Local resource: Instances of local resources—type name is local_resource—run on each server of the cluster. When a server joins the cluster, Oracle Clusterware automatically extends local resources to have instances tied to the new server. When a server leaves the cluster, Oracle Clusterware automatically sheds the instances of local resources that ran on the departing server. Instances of local resources are pinned to their servers; they do not fail over from one server to another.
Cluster resource: Cluster-aware resource types—type name is cluster_resource—are aware of the cluster environment and are subject to cardinality and cross-server switchover and failover.
Note:
Previous versions of Oracle Clusterware only supported the application resource type. This resource type still exists, but only for backward compatibility. Oracle recommends that you register application-type resources using the cluster_resource resource type in Oracle Clusterware 11g release 2 (11.2). If you decide not to register your application-type resources using the cluster_resource resource type, then consult the documentation that corresponds to those applications for administration information.
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