Oracle Database 12c Essentials — Question 1

Which statement about CDB architecture is true?

Answer options

• A. Oracle-supplied metadata resides only in the root container.
• B. A seed PDB can sometimes be opened for particular operations.
• C. Multiple PDBs with the same name can reside in the same CDB.
• D. A CDB can have an infinite number of PDBs.
• E. You can create common users in PDBs.

Correct answer: A

Explanation

The correct answer is A because Oracle-supplied metadata is indeed located exclusively in the root container. Option B is incorrect, as a seed PDB cannot be opened for operations; it is a template. Option C is false since PDBs within the same CDB must have unique names. Option D is misleading; while a CDB can support many PDBs, there is a practical limit based on resources. Option E is wrong as common users can only be created in the root container, not within individual PDBs.