Which statement is true?

You are about to install Oracle Database 12c Enterprise Edition. Which statement is true?

A.
You should not install the Oracle Database software into an existing Oracle home from a
different release.

B.
A multitenant container database (CDB) can have several pluggable databases (PDBs) with
different character sets.

C.
Oracle recommends that you back up the root. sh script after you complete the installation.

D.
Cloning an Oracle home is useful if you are performing multiple Oracle Database Installations.

E.
You can stop existing Oracle processes, including the listener and the database running in the
Oracle home, before the database software installation.

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Leave a Reply 11

Santosh

Raja

The answer is b.
Refer Oracle Official Document Oracle Exam Study Guide
Explanation: http://www.oracle.com/partners/en/knowledge-zone/database/oracle-database-11g/db12c-exam-study-guide-2202720.pdf

Andy

One more confusing answer…!! A is also right

GandRalf

A is wrong because not “you should not” but “you must not”!
correct answer: C
see https://docs.oracle.com/database/121/LADBI/post_inst_task.htm#LADBI7749

Sravan

Hey,

Question is “You are about to install” not “After you install”!! 🙂

So right answer is ‘A’.

Sunil Vora

Only C is correct answer

Creating a Backup of the root.sh Script
Oracle recommends that you back up the root.sh script after you complete an installation. If you install other products in the same Oracle home directory, then Oracle Universal Installer updates the contents of the existing root.sh script during the installation. If you require information contained in the original root.sh script, then you can recover it from the backed up root.sh file.

Choosing a Database Character Set for a Multitenant Container Database
In Oracle Database 12c, all containers of a multitenant container database (CDB) must have the same database character set and the same national character set. That is, all pluggable databases (PDBs) in a CDB must have the same character set as the CDB’s root container. The character sets of the root container are considered the character sets of the whole CDB.

You can consolidate multiple databases by plugging them into a single CDB. These databases can be traditional, non-CDBs or PDBs unplugged from other CDBs. Three situations may happen depending on the database character set of a database being plugged in, that is, a new PDB:

• The character set is the same as the database character set of the CDB. In this case, the plugging operation succeeds (as far as the database character set is concerned).
• The character set is plug-in compatible with the database character set of the CDB. Plug-in compatible means that it is a binary subset of the CDB’s character set and both are single-byte or both are multibyte. In this case, the database character set of the new PDB is automatically changed to the database character set of the CDB at the first open and the plugging operation succeeds.
• The character set is not plug-in compatible with the database character set of the CDB. In this case, the new PDB can only be opened in restricted mode for administrative tasks and cannot be used for production. Unless you have a tool that can migrate the database character set of the new PDB to the character set of the CDB, the new PDB is unusable.

sudhakar

Answer A is correct:

https://docs.oracle.com/database/121/NTDBI/intro.htm#NTDBI2648

2.3.4.1 Installing the Software on a System with an Existing Oracle Installation

You must install this product into a new Oracle home directory. You cannot install products from one release of Oracle Database into an Oracle home directory of a different release. For example, you cannot install release 12.1 software into an existing Oracle9i Oracle home directory