Oracle 视图 V$PDBS 官方解释，作用，如何使用详细说明

CON_ID

NUMBER

The ID of the container to which the data pertains. Possible values include:

• 0: This value is used for rows containing data that pertain to the entire 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

DBID

NUMBER

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

CON_UID

NUMBER

Unique identifier associated with the PDB

GUID

RAW(16)

Globally unique identifier (GUID) of this PDB

NAME

VARCHAR2(128)

Name of the PDB

OPEN_MODE

VARCHAR2(10)

Open mode information. Possible values:

• MOUNTED

• READ WRITE

• READ ONLY

• MIGRATE

RESTRICTED

VARCHAR2(3)

Indicates whether only users possessing RESTRICTED SESSION privilege can connect to the PDB. Possible values:

• YES

• NO

• NULL

OPEN_TIME

TIMESTAMP(3) WITH TIME ZONE

Date and time when the database was last opened

CREATE_SCN

NUMBER

System change number (SCN) for the creation of this PDB

TOTAL_SIZE

NUMBER

Shows the disk space (in bytes) used by the PDB, including both data and temp files.

BLOCK_SIZE

NUMBER

The current block size for the PDB

RECOVERY_STATUS

VARCHAR2(26)

Shows the recovery status for the PDB. Possible values:

• DISABLED: The PDB is offline. This is similar to all files belonging to this PDB being offline, except that all files to be added to this PDB in the future will also be offline to begin with.

• DISABLED AUTOMATIC RECOVER: Same as DISABLED, except that standby Active Data Guard recovery will automatically attempt to spawn PDB recovery isolation for the PDB and transition the PDB into ENABLED.

• ENABLED: The PDB is not offline at the PDB level. Individual files in the PDB may be online or offline at the file level.

SNAPSHOT_PARENT_CON_ID

NUMBER

This column shows the container ID of the master PDB that this PDB is a snapshot clone of. This column shows a nonzero value only if the PDB is a snapshot clone. For all other cases, it shows a value of 0.

APPLICATION_ROOT

VARCHAR2(3)

Indicates whether the PDB is an application root

APPLICATION_PDB

VARCHAR2(3)

Indicates whether the PDB is an application PDB

APPLICATION_SEED

VARCHAR2(3)

Indicates whether the PDB is an application seed (an application seed is also an application PDB)

APPLICATION_ROOT_CON_ID

NUMBER

If this PDB is an application PDB, the container ID of an application root to which this application PDB belongs.

If this PDB is an application root clone, the container ID of an application root to which this application root clone belongs.

Otherwise, NULL.

APPLICATION_ROOT_CLONE

VARCHAR2(3)

Indicates whether this PDB is an application root clone (YES) or not (NO)

PROXY_PDB

VARCHAR2(3)

Indicates whether this PDB is a proxy PDB (YES) or not (NO)

LOCAL_UNDO

NUMBER

Shows whether the PDB is in local undo. Possible values:

• 1 – PDB is in local undo mode

• 0 – PDB is in shared undo mode

This column is not relevant for CDB$ROOT.

UNDO_SCN

NUMBER

System change number (SCN) at which the PDB was last converted from shared to local undo, or from local to shared undo.

This column is not relevant for CDB$ROOT.

UNDO_TIMESTAMP

DATE

Date and time at which the PDB was last converted from shared to local undo, or from local to shared undo. 

This column is not relevant for CDB$ROOT.

CREATION_TIME

DATE

Date and time at which the PDB was created.

DIAGNOSTICS_SIZE

NUMBER

Shows the current disk space usage (in bytes) of the diagnostic traces generated in the PDB, which is represented by the CON_ID column of the row

PDB_COUNT

NUMBER

The number of user-created PDBs belonging to a given application root or CDB$ROOT. For all other containers, its value is 0.

AUDIT_FILES_SIZE

NUMBER

Shows the current disk space usage (in bytes) by Unified Audit files (.bin format) in the current PDB.

MAX_SIZE

NUMBER

Shows the maximum amount of disk space (in bytes) that can  be used by data and temp files in the PDB

MAX_DIAGNOSTICS_SIZE

NUMBER

Shows the maximum amount of disk space (in bytes) that can be used by diagnostic traces generated in the PDB

MAX_AUDIT_SIZE

NUMBER

Shows the maximum amount of disk space (in bytes) that can be used by Unified Audit files (.bin format) in the PDB

LAST_CHANGED_BY

VARCHAR2(11)

Indicates what type of user last changed the PDB. Possible values:

• COMMON USER

• LOCAL USER

TEMPLATE

VARCHAR2(3)

For internal use only

TENANT_ID

VARCHAR2(256)

Pluggable database tenant key

UPGRADE_LEVEL

NUMBER

For internal use only

GUID_BASE64

VARCHAR2(30)

The GUID of the PDB, encoded in base64

RECOVERY_TARGET_PDB_INCARNATION#^Foot 1

NUMBER

The incarnation number to which all datafiles belonging to the PDB would be recovered by the RECOVER PLUGGABLE DATABASE command

CLOUD_IDENTITY^Foot 1

VARCHAR2(4000)

Cloud identifier for the PDB

CLOSE_TIME^Foot 1

TIMESTAMP(3) WITH TIME ZONE

Date and time when the database was last closed