DBA_PDBS

DBA_PDBS describes PDBs belonging to a given CDB. When queried from the root, it will describe all PDBs belonging to a given CDB. When queried from a PDB, it will always return no rows.

Column Datatype NULL Description

PDB_ID

NUMBER

NOT NULL

Container ID of the PDB

PDB_NAME

VARCHAR2(128)

NOT NULL

Name of the PDB

DBID

NUMBER

NOT NULL

PDB identifier calculated when the PDB is created and stored in all file headers associated with the PDB

CON_UID

NUMBER

NOT NULL

Unique identifier associated with the container

GUID

RAW(16)

  

Globally unique immutable ID assigned to the PDB at creation time

STATUS

VARCHAR2(13)

  

State of the PDB. Possible values:

  • NEW - The PDB has never been opened since it was created. It must be opened in READ WRITE mode for Oracle to perform processing needed to complete the integration of the PDB into the CDB and mark it NORMAL. An error will be thrown if an attempt is made to open the PDB read only.

  • NORMAL - The PDB is ready to be used.

  • UNPLUGGED - The PDB has been unplugged. The only operation that can be performed on it is DROP PLUGGABLE DATABASE.

  • NEEDS UPGRADE - A PDB needs to be upgraded to the version of the CDB into which it was plugged.

  • CONVERTING - A non-CDB was plugged into the CDB and is undergoing conversion required to make it behave like a real PDB.

  • UNUSABLE - The PDB is being created or an unrecoverable error was encountered during its creation. The PDB cannot be opened while its state is set to UNUSABLE. If the PDB remains in this state because of an error encountered during its creation, it can only be dropped. The alert log can be checked to determine if there was an error during PDB creation.

CREATION_SCN

NUMBER

  

Creation SCN

VSN

NUMBER

  

The version number of the PDB

LOGGING1

VARCHAR2(9)

  

Shows the current logging mode for the PDB. Possible values:

  • LOGGING

  • NOLOGGING

FORCE_LOGGING1

VARCHAR2(3)

  

Specifies whether force logging is turned on for the PDB. Possible values:

  • NO

  • YES

FORCE_NOLOGGING1

VARCHAR2(3)

  

Specifies whether force nologging is turned on for the PDB. Possible values:

  • NO

  • YES

CON_ID

NUMBER

NOT NULL

The ID of the container that CON_DBID identifies. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire multitenant container database (CDB). This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data
1

This column is available starting with Oracle Database 12c Release 1 (12.1.0.2).