1. Database Reference
  2. Dynamic Performance Views
  3. Dynamic Performance (V$) Views: V$IM_COLUMN_LEVEL to V$RULE_SET_AGGREGATE_STATS
  4. V$RECOVERY_PROGRESS

8.156 V$RECOVERY_PROGRESS

V$RECOVERY_PROGRESS can be used to track database recovery operations to ensure that they are not stalled, and also to estimate the time required to complete the operation in progress.

On non-coordinator instances, V$RECOVERY_PROGRESS is not populated.

On the coordinator instance (the instance where MRP0 was started to start recovery), V$RECOVERY_PROGRESS has the same set of rows as before, except the following rows in the ITEM column are always 0 (not used) with Multi-Instance Redo Apply:

  • Active Apply

  • Maximum Apply Rate

  • Apply Time per Log

  • Checkpoint Time per Log

  • Recovery ID

V$RECOVERY_PROGRESS is a subview of V$SESSION_LONGOPS.

Note:

This view is populated on the instance where the MRP0 process is started if recovery is running in Multi-Instance Redo Apply mode. Not all the columns will be populated.

Column Datatype Description

START_TIME

DATE

Start time of the recovery operation

TYPE

VARCHAR2(64)

Type of recovery operation being performed:

  • CRASH RECOVERY

  • INSTANCE RECOVERY

  • MEDIA RECOVERY

ITEM

VARCHAR2(32)

Item being measured.

When TYPE is CRASH RECOVERY or INSTANCE RECOVERY, the possible values are:

  • Log Files

  • Redo Blocks

When TYPE is MEDIA RECOVERY, the possible values are:

  • Active Apply Rate

  • Average Apply Rate

  • Maximum Apply Rate

  • Redo Applied

  • Log Files

  • Last Applied Redo

  • Active Time

  • Elapsed Time

  • Apply Time per Log

  • Checkpoint Time per Log

  • Standby Apply Lag

  • Recovery ID

UNITS

VARCHAR2(32)

The units of measurement for each item

SOFAR

NUMBER

Amount of work done so far

TOTAL

NUMBER

Total amount of work expected

TIMESTAMP

DATE

Timestamp of the last redo record applied

COMMENTS

VARCHAR2(248)

Miscellaneous notes; currently displays the SCN for the last applied redo

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

See Also: