Which two are true concerning a multitenant container d…

Which two are true concerning a multitenant container database with three pluggable database?

A.
All administration tasks must be done to a specific pluggable database.

B.
The pluggable databases increase patching time.

C.
The pluggable databases reduce administration effort.

D.
The pluggable databases are patched together.

E.
Pluggable databases are only used for database consolidation.

Explanation:
The benefits of Oracle Multitenant are brought by implementing a pure deployment choice. The following list
calls out the most compelling examples.
* High consolidation density. (E)
The many pluggable databases in a single multitenant container database share its memory and background
processes, letting you operate many more pluggable databases on a particular platform than you can single
databases that use the old architecture. This is the same benefit that schema-based consolidation brings.
* Rapid provisioning and cloning using SQL.
* New paradigms for rapid patching and upgrades. (D, not B)
The investment of time and effort to patch one multitenant container database results in patching all of its many
pluggable databases. To patch a single pluggable database, you simply unplug/plug to a multitenant container
database at a different Oracle Database software version.
* (C, not A) Manage many databases as one.
By consolidating existing databases as pluggable databases, administrators can manage many databases as
one. For example, tasks like backup and disaster recovery are performed at the multitenant container database
level.
* Dynamic between pluggable database resource management. In Oracle Database 12c, Resource Manager is
extended with specific functionality to control the competition for resources between the pluggable databases
within a multitenant container database.
Note:
* Oracle Multitenant is a new option for Oracle Database 12c Enterprise Edition that helps customers reduce IT
costs by simplifying consolidation, provisioning, upgrades, and more. It is supported by a new architecture that
allows a multitenant container database to hold many pluggable databases. And it fully complements other
options, including Oracle Real Application Clusters and Oracle Active Data Guard. An existing database can be
simply adopted, with no change, as a pluggable database; and no changes are needed in the other tiers of the
application.
12c Oracle Multitenant