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Oracle

1Z0-062 · Question #111

Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to the HR_PDB. You execute the following command: SQL > CREATE UNDO TABLESPACE undotb01 DATAFILE `u01/o

The correct answer is E. It executes successfully but neither tablespace nor the data file is created.. Interesting behavior in 12.1.0.1 DB of creating an undo tablespace in a PDB. With the new Multitenant architecture the undo tablespace resides at the CDB level and PDBs all share the same UNDO tablespace. When the current container is a PDB, an attempt to create an undo tablespac

Managing Undo Data

Question

Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to the HR_PDB. You execute the following command:

SQL > CREATE UNDO TABLESPACE undotb01 DATAFILE `u01/oracle/rddb1/undotbs01.dbf' SIZE 60M AUTOEXTEND ON; What is the result?

Options

  • AIt executes successfully and creates an UNDO tablespace in HR_PDB.
  • BIt falls and reports an error because there can be only one undo tablespace in a CDB.
  • CIt fails and reports an error because the CONTAINER=ALL clause is not specified in the
  • DIt fails and reports an error because the CONTAINER=CURRENT clause is not specified in the
  • EIt executes successfully but neither tablespace nor the data file is created.

How the community answered

(34 responses)
  • A
    3% (1)
  • B
    12% (4)
  • C
    6% (2)
  • E
    79% (27)

Explanation

Interesting behavior in 12.1.0.1 DB of creating an undo tablespace in a PDB. With the new Multitenant architecture the undo tablespace resides at the CDB level and PDBs all share the same UNDO tablespace. When the current container is a PDB, an attempt to create an undo tablespace fails without returning an error.

Topics

#Undo tablespace#Multitenant architecture#PDB undo management

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