Which two components must always be defined or specified by an administrator to make an application highly available using Oracle 12c Clusterware?
A.
A Server Pool
B.
an application VIP
C.
an application resource
D.
a resource dependency definition
E.
a script agent
Explanation:
Oracle Clusterware manages applications when they are registered as resources with Oracle Clusterware. Oracle Clusterware has access to application-specific
primitives that have the ability to start, stop, and monitor a specific resource. Oracle Clusterware runs all resource-specific commands through an entity called an
agent.
Note: When initializing the agent framework, if any of the mandatory entry points are not provided, then the agent framework invokes a script pointed to by the
ACTION_SCRIPT resource attribute.
https://docs.oracle.com/database/121/CWADD/crschp.htm#CWADD92082
Several Components are used to implement HA with clusterware:
Resource
Agent
Action Script
Privilleges
Resource Dependency
Application VIP
OCR
A wrong its not from the components of HA with clusterware
B,D is not mandatory and must be always be defined by administrator
I think its C,E
I think so…
Oracle Clusterware Resources and Agents
This section discusses the framework that Oracle Clusterware uses to monitor and manage resources, to ensure high application availability.
This section includes the following topics:
■ Resources
■ Resource Types
■ Agents
■ Action Scripts
■ Building an Agent
■ Registering a Resource in Oracle Clusterware
Resources
Oracle Clusterware manages applications and processes as resources that you register with Oracle Clusterware. The number of resources you register with Oracle Clusterware to manage an application depends on the application. Applications that consist of only one process are usually represented by only one resource. More complex applications, built on multiple processes or components, may require multiple resources.
When you register an application as a resource in Oracle Clusterware, you define how Oracle Clusterware manages the application using resource attributes you ascribe to the resource. The frequency with which the resource is checked and the number of attempts to restart a resource on the same server after a failure before attempting to start it on another server (failover) are examples of resource attributes. The registration information also includes a path to an action script or application-specific action program that Oracle Clusterware calls to start, stop, check, and clean up the application.
An action script is a shell script (a batch script in Windows) that a generic “”script agent”” provided by Oracle Clusterware calls. An application-specific agent is usually a C or C++ program that calls Oracle Clusterware-provided APIs directly.
Agreed C,E
Some of these questions are a joke. I’ve done enough of these exams to know they tend to ask about obscure topics that most people never use, but these take the p. I can’t even find definitive answers to some of the questions.
ACTION_SCRIPT
An absolute file name that includes the path and file name of an action script. The agent specified in the AGENT_FILENAME attribute calls the script specified in the ACTION_SCRIPT attribute.
AGENT_FILENAME
A fully qualified file name of an agent program that a resource type uses to manage its resources. Every resource type MUST have an agent program to manage its resources. Resource types use agent programs by either specifying a value for this attribute or inheriting it from their base resource type. There are two script agents included with Oracle Clusterware 12c: application and scriptagent. Oracle Clusterware uses the application script agent for resources of the deprecated application resource type. The default value for this attribute is scriptagent.
This question is the same the question 6
I think CE