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Latest and Most Accurate Oracle 1z0-068 Dumps Exam Questions and Answers:

Version: 9.0
Question: 1

Which four statements are true concerning the upgrading of Oracle Grid Infrastructure 12c?

A. The ORACLE_HOME environment variable must be set to the Grid Infrastructure home directory in the installation owner’s environment.
B. The upgrade must be done in-place.
C. The upgrade must be done out of place.
D. Upgrade validation may be done using the Oracle Universal Installer which in turn invokes the built-in cluster verification utility.
E. The cluster verification utility cluvfy.sh can verify that the cluster is ready for an upgrade.
F. The ORACLE_SID environment variable must be set to the SID of the ASM instance in the installation owner’s environment.
G. The cluster verification utility cluvfy.sh can generate fixup scripts to run on all nodes of the cluster.

Answer: A,C,E,G

Explanation:
A: Use the following command to start the installer, where the path you provide for the flag ORACLE_HOME is the location of the home directory from the earlier Oracle Clusterware installation
For example:
$ cd /u01/app/12.1.0/grid/oui/bin
$ ./runInstaller -nowait -waitforcompletion -ignoreSysPrereqs -updateNodeList -silent
CRS=true ORACLE_HOME=/u01/app/crs
C: Oracle Clusterware and Oracle ASM upgrades are always out-of-place upgrades. You cannot perform an in-place upgrade of Oracle Clusterware and Oracle ASM to existing homes.
E, G: Run the CVU manual script cluvfy.sh script to perform system checks and generate fixup scripts

Question: 2

Which two steps must always be performed to delete node host04 from an Oracle 12c Clusterware cluster that does not use Grid Naming Service (GNS)?

A. Run the crsctl unpin css – host04 command as root on host01, or on either host02 or host03.
B. Run the rootcrs.pl – delete –force command as root on host01, or on either host02 or host03.
C. Run the rootcrs.pl – delete –force command as root on host04.
D. Run the crsctl delete node -n host04 command as root on host04.
E. Run the crsctl delete node -n host04 command as root on host04.
F. Run the crsctl delete node -n host04 command as root on host01, or on either host02 or host03.

Answer: A,F

Explanation:
To delete a node from a cluster:
References:https://docs.oracle.com/database/121/CWADD/adddelclusterware.htm#CWADD90992

Question: 3

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Examine this command to create a volume in the DATA disk group:
SQL>ALTER DISKGROUP DATA ADD VOLUME vo11 SIZE 10g HIGH
STRIPE_WIDTH 1M;
STRIPE_COLUMNS 1;
The DATA disk group has 50GB free space.
Which two are prerequisites for successful execution of this command?

A. COMAPTIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher for the DATA disk group.
B. The DATA disk group must not be created with external redundancy.
C. The DATA disk group must not contain any other volume.
D. The DATA disk group must have at least three failure groups.
E. The DATA disk group must have an AU size of 1MB.

Answer: A,D

Explanation:
The compatibility parameters COMPATIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher for the disk group. A high redundancy disk group must contain at least three failure groups.
References:

Question: 4

Which two statements are true about v$asm – views in clustered environment?

A. They exist both in ASM and RDBMS instances, and display the same output.
B. Their names can be seen in dict when connected to an ASM instance.
C. Their names can be seen in v$fixed_table when connected to an instance of any type that is started.
D. They exist in both in ASM and RDBSM instances, but they can display different outputs depending on the instance type.
E. gv$asm_attribute can be used to display the ASM_POWER_LIMIT attribute of all ASM instances in the cluster.

Answer: B,D

Explanation:
You can use the views to obtain information about Oracle Automatic Storage Management Cluster File System (OracleACFS). These views are accessible from the Oracle ASM instance.
References:https://docs.oracle.com/cd/E11882_01/server.112/e18951/asmviews.htm#OSTMG94187

Question: 5

Which two statements are true about ASM default templates?

A. Default data file templates are only created by ASM when a normal redundancy disk group is created.
B. Default template settings for redundancy depends on the disk group redundancy.
C. Default templates for a disk group can be modified.
D. Default template setting for striping depends on disk group redundancy.
E. Templates may be shared across disk groups.

Answer: A,B

Explanation:
Default template settings depend on the diskgroup type. The default template for data files for a normal redundancy.
References:

Question: 6

Which three statements are true regarding Flex ASM on a four-node cluster consisting of three-hub nodes and a leaf node?

A. An ASM instance and database instances can coexist on the same hub node.
B. A database instance on a hub node canbe a client of an ASM instance running on any leaf node.
C. A database instance on a hub node can be a client of an ASM instance running on any hub node.
D. A database instance on a leaf node can be a client of an ASM instance running on any hub node.
E. A database instance on a hub node uses an ASM instance as an I/O server when requesting I/O to diskgroups.
F. ASM Cluster File System (ASFS) can only be deployed on hub nodes.

Answer: A,C,F

Explanation:
Architecturally Oracle Flex Cluster comprises of a Hub and Leafarchitecture where in only the Hub nodes will only have direct access to Oracle Cluster Registry (OCR) and Voting Disk (VD). However application can access the database via Leaf nodes without ASM instance NOT running on Leaf nodes. The connection to the database is through Hub making it transparent for the application.
Note:
Hub Nodes are connected among them via private network and have direct access to the shared storage just like previous versions. These nodes are the ones that access the Oracle Cluster Registry (OCR) and Voting Disk (VD) directly.
Leaf Nodes are lighter and are not connected among them, neither accesses the shared storage like the Hub Nodes. Each Leaf Node communicates with the Hub Node that is attached to, and it is connected to the cluster via the Hub Node that is linked to.
References:http://www.oracle.com/technetwork/articles/database/flexasm-flexcluster-benefits-odb12c-2177371.html