Which two are true about unplugging an application container from a container database and plugging it into a different container database?

Question

Options

• AIt requires local undo mode in both container databases.
• BIt requires only local undo mode in the database where the application container will be
• CPlugging the application root into a different CDB plugs In all its application PDBs.
• DApplication PDBs In the applic tion container must be unplugged before the application root Is
• EUnplugging the application root from a CDB unplugs all its application PDBs.
• FThe application root of an application container should be plugged Into the other CDB before Its

• A
  12% (3)
• B
  4% (1)
• C
  24% (6)
• D
  56% (14)
• E
  4% (1)

Explanation

When moving an application container between CDBs, the process must follow a strict order: Application PDBs must be individually unplugged from the Application Root before the Application Root itself can be unplugged (D), and conversely, the Application Root must be plugged into the target CDB first before any of its Application PDBs can be plugged in (F) - Oracle enforces this parent-before-child hierarchy in both directions.

Why the distractors are wrong:

• A & B are false - local undo mode is not a prerequisite for unplugging/plugging application containers; it's relevant to other Multitenant operations like cloning.
• C is false - plugging in an Application Root does not automatically bring along its Application PDBs; each must be plugged in separately afterward.
• E is the mirror-image trap of D - unplugging the Application Root does not cascade to its Application PDBs; in fact, Oracle will prevent you from unplugging the root if any Application PDBs are still attached.

Memory tip: Think of it like disassembling and reassembling a Russian nesting doll - you must remove the inner dolls (App PDBs) before you can move the outer doll (App Root), and when rebuilding, the outer doll goes in first.

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