Question: 1
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
Answer: C,E
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.
References: https://docs.oracle.com/database/121/CWADD/crschp.htm#CWADD92082
Question: 2
Which two statements are true about resources defined by an administrator and registered with Oracle
12c Clusterware for high availability?
A. A policy-managed resource can be started manually using crsctl.
B. A policy-managed resource can be started manually using srvctl.
C. Resource dependencies are automatically set when using a policy-managed resource.
D. An administrator-managed resource can be started manually using crsctl.
E. An administrator-managed resource can be started manually using srvctl.
F. The action script is automatically set when using a policy-managed resource.
Answer: A,E
Explanation:
A: 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.
E: Administrator-managed resources refer to databases. You must use SRVCTL to create server pools
that host Oracle databases. You must use CRSCTL to create server pools that host non-database
resources such as middle tiers and applications.
References: https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD92894
Question: 3
Which statement is true about using OPatch to patch Oracle Grid Infrastructure 12c?
A. All grid infrastructure patches may be applied in a rolling fashion with Opatch.
B. Opatch can patch all cluster nodes simultaneously without stopping the clusterware on all nodes.
C. Opatch can patch all cluster nodes simultaneously only for nonrolling patches.
D. Applying patches with Opatch must be done in an out-of-place fashion.
Answer: A
Explanation:
As with standard upgrades to Oracle Grid Infrastructure, at any given point in time for normal operation
of the cluster, all the nodes in the cluster must have the same software release and patch level. Because
one-off patches can be applied as rolling upgrades, all possible patch levels on a particular software
release are compatible with each other.
Note: Starting with Oracle Grid Infrastructure 12c Release 1 (12.1), a new cluster state called "Rolling
Patch" is available. This mode is similar to the existing "Rolling Upgrade" mode in terms of the Oracle
ASM operations allowed in this quiesce state.
References: https://docs.oracle.com/database/121/CWLIN/procstop.htm#CWLIN528
Question: 4
Which three statements are true about the administration and use of policy sets in Oracle 12c
Clusterware? (Choose three.)
A. All server pools in a cluster are controlled by the policy set, when user-defined policy management is
used.
B. Servers in a server pool outside the control of policy set are never affected by policy changes, when
user-defined policy management is used.
C. Clusterware administrators cannot directly modify the policy set when Quality of Service (QoS)
Management is used.
D. A server pool can have the same attributes defined for different policies in the policy set, when userdefined policy management is used.
E. A server pool can have different attributes defined for different policies in the policy set, when userdefined policy management is used.
Answer: A,C,E
Explanation:
A: A cluster configuration policy set is a document that defines the names of all server pools configured
for the cluster and definitions for all policies.
C: If you create policies with Oracle Database Quality of Service Management (Oracle Database QoS
Management), then you categorize servers by setting server pool directive overrides, and CRSCTL
commands using the policy and policyset nouns are disabled.
Note: Oracle Database 12c has introduced the policy sets, a feature that allows preparing in advance all
the different workload scenarios and activating them with a single command. The easiest way to create
policy sets is dumping the current configuration into a file, edit it, and reload it into the cluster.
References: https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD92635
Question: 5
Your flex cluster has these attributes:
1. Hub nodes host01 and host02
2. Leaf nodes host03 and host04
3. Full Featured GNS is configured and running.
You attempt to run this command to add two more nodes to the cluster:
$ ./addnode.sh –silent “CLUSTER_NEW_NODES={host05,host06}”
“CLUSTER_NEW_NODE_ROLES={hub,leaf}”
What is the result and the reason for this result?
A. It fails because no VIP was specified for the hub node host05.
B. It fails because hub and leaf nodes may not be added by the same execution of addNode.sh.
C. It fails because GNS doesn’t assign VIPs for leaf nodes and no VIP was specified in the command.
D. It succeeds because no VIP specification is required for leaf nodes and none need to be specified for
hub nodes when using full featured GNS.
Answer: A
Explanation:
Hub Nodes always have VIPs
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