Oracle教程 2023-03-21

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

本站中文解释

Oracle视图V$RECOVERY_LOG视图用于显示数据库的归档日志信息。这个视图可以用来查看数据库的恢复状态，从而了解归档日志是否激活，有没有发生恢复等情况。

使用V$RECOVERY_LOG视图非常简单，只需使用SELECT命令查询就可以了。不仅可以查看日志文件的路径，还可以查看日志文件的名称、路径、大小，作为归档日志所用到的文件，以及归档日志是否激活等信息。

例如用下面的SELECT查看归档日志是否激活:

SELECT arc_status
FROM v$recovery_log;

如果返回YES，则说明归档日志已经激活，如果返回NO，则说明归档日志尚未激活。

官方英文解释

V$RECOVERY_LOG lists information about archived logs that are needed to complete media recovery. This information is derived from the log history view, V$LOG_HISTORY.

V$RECOVERY_LOG contains useful information only for the Oracle process doing the recovery. When Recovery Manager directs a server process to perform recovery, only Recovery Manager can view the relevant information in this view. V$RECOVERY_LOG will be empty to all other Oracle users.

Column	Datatype	Description
`THREAD#`	`NUMBER`	Thread number of the archived log
`SEQUENCE#`	`NUMBER`	Sequence number of the archived log
`TIME`	`DATE`	Time of the first entry (lowest SCN) in the log
`ARCHIVE_NAME`	`VARCHAR2(513)`	Name of the file when archived, using the naming convention specified by the `LOG_ARCHIVE_FORMAT` initialization parameter See Also: “LOG_ARCHIVE_FORMAT”
`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

本站中文解释

官方英文解释

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