Oracle 视图 V$FLASHBACK_DATABASE_LOGFILE 官方解释,作用,如何使用详细说明

本站中文解释

V$FLASHBACK_DATABASE_LOGFILE,简称FLASHBACK_DATABASE_LOGFILE视图,是oracle数据库内置的一种动态视图,可以用来查看当前FLASHBACK DATABASE 日志文件的相关信息,包括当前FLASHBACK DATABASE 日志文件的名字、创建时间、大小等。

使用方法:
通过以下SQL可以查询当前数据库的FLASHBACK DATABASE 日志文件的详细信息:

SELECT * FROM V$FLASHBACK_DATABASE_LOGFILE;

官方英文解释

V$FLASHBACK_DATABASE_LOGFILE displays information about the flashback log files.

Column Datatype Description

NAME

VARCHAR2(513)

Name of the log file

LOG#

NUMBER

Log file number

THREAD#

NUMBER

Log file thread number

SEQUENCE#

NUMBER

Log file sequence number

BYTES

NUMBER

Log file size (in bytes)

FIRST_CHANGE#

NUMBER

Lowest system change number (SCN) in the log file

FIRST_TIME

DATE

Time of the first SCN in the log file

TYPE

VARCHAR2(9)

Log type:

  • NORMAL

  • RESERVED

  • FREE

  • TO DELETE

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


数据运维技术 » Oracle 视图 V$FLASHBACK_DATABASE_LOGFILE 官方解释,作用,如何使用详细说明