1. Database Reference
  2. Dynamic Performance Views
  3. Dynamic Performance (V$) Views: V$ACCESS to V$HVMASTER_INFO
  4. V$FLASHBACK_DATABASE_STAT

7.226 V$FLASHBACK_DATABASE_STAT

V$FLASHBACK_DATABASE_STAT displays statistics for monitoring the I/O overhead of logging flashback data. This view also displays the estimated flashback space needed based on previous workloads.

Column Datatype Description

BEGIN_TIME

DATE

Beginning of the time interval

END_TIME

DATE

End of the time interval

FLASHBACK_DATA

NUMBER

Number of bytes of flashback data written during the interval

DB_DATA

NUMBER

Number of bytes of database data read and written during the interval

REDO_DATA

NUMBER

Number of bytes of redo data written during the interval

ESTIMATED_FLASHBACK_SIZE

NUMBER

Value of ESTIMATED_FLASHBACK_SIZE in V$FLASHBACK_DATABASE_LOG at the end of the time interval

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