V$MANAGED_STANDBY displays current status information for some Oracle Database processes related to physical standby databases in the Data Guard environment. This view does not persist after an instance shutdown.

Column Datatype Description

PROCESS

VARCHAR2(9)

Type of the process whose information is being reported:

  • RFS - Remote file server

  • MRP0 - Detached recovery server process

  • MR(fg) - Foreground recovery session

  • ARCH - Archiver process

  • FGRD

  • LGWR

  • RFS(FAL)

  • RFS(NEXP)

  • LNS - ASYNC Redo Transport process

PID

VARCHAR2(24)

Operating system process identifier of the process

STATUS

VARCHAR2(12)

Current process status:

  • UNUSED - No active process

  • ALLOCATED - Process is active but not currently connected to a primary database

  • CONNECTED - Network connection established to a primary database

  • ATTACHED - Process is actively attached and communicating to a primary database

  • IDLE - Process is not performing any activities

  • ERROR - Process has failed

  • OPENING - Process is opening the archived redo log

  • CLOSING - Process has completed archival and is closing the archived redo log

  • WRITING - Process is actively writing redo data to the archived redo log

  • RECEIVING - Process is receiving network communication

  • ANNOUNCING - Process is announcing the existence of a potential dependent archived redo log

  • REGISTERING - Process is registering the existence of a completed dependent archived redo log

  • WAIT_FOR_LOG - Process is waiting for the archived redo log to be completed

  • WAIT_FOR_GAP - Process is waiting for the archive gap to be resolved

  • APPLYING_LOG - Process is actively applying the archived redo log to the standby database

CLIENT_PROCESS

VARCHAR2(8)

Identifies the corresponding primary database process:

  • Archival - Foreground (manual) archival process (SQL)

  • ARCH - Background ARCn process

  • LGWR - Background LGWR process

CLIENT_PID

VARCHAR2(40)

Operating system process identifier of the client process

CLIENT_DBID

VARCHAR2(40)

Database identifier of the primary database

GROUP#

VARCHAR2(40)

Standby redo log group

RESETLOG_ID

NUMBER

Resetlogs identifier of the archived redo log

THREAD#

NUMBER

Archived redo log thread number

SEQUENCE#

NUMBER

Archived redo log sequence number

BLOCK#

NUMBER

Last processed archived redo log block number

BLOCKS

NUMBER

Count (in 512-byte blocks) of the last write to a redo log, or for a recovery process, the expected final read count

DELAY_MINS

NUMBER

Archived redo log delay interval in minutes

KNOWN_AGENTS

NUMBER

Total number of standby database agents processing an archived redo log

ACTIVE_AGENTS

NUMBER

Number of standby database agents actively processing an archived redo log

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

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