Oracle教程 2023-02-24

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

监控备份进程
Oracle视图是一种特殊的容器，它可以把基于一组参数的结果存放起来并对外公开，它与传统表面上乍一看没有什么区别（或者说几乎没有什么区别），但是它可以把结果视为一个普通的表。

V$BACKUP_SPFILE是oracle的一个数据字典视图，用于监控备份进程。它可以显示有关spfile的当前备份和其他信息，햄包括备份类型、备份标识和时间等等。

要使用此视图，可以执行以下查询：

SELECT * from V$BACKUP_SPFILE;

这将显示一个表，其中包含spfile的备份信息。您可以使用此表来查看哪些文件备份了什么时候，以及任何有关这次备份的其他信息。

V$BACKUP_SPFILE displays information about server parameter files in backup sets from the control file.

Column	Datatype	Description
`RECID`	`NUMBER`	Backup SPFILE record ID
`STAMP`	`NUMBER`	Backup SPFILE record stamp
`SET_STAMP`	`NUMBER`	Backup set stamp (of the set which contains this SPFILE backup)
`SET_COUNT`	`NUMBER`	Backup set count (of the set which contains this SPFILE backup)
`MODIFICATION_TIME`	`DATE`	Time when the SPFILE was last modified (this also includes creation time)
`BYTES`	`NUMBER`	Size of the SPFILE (in bytes)
`COMPLETION_TIME`	`DATE`	Time when the backup of the SPFILE completed
`DB_UNIQUE_NAME`	`VARCHAR2(30)`	Unique database name
`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
`GUID`	`RAW(16)`	The GUID of the PDB to which the backup belongs. This is useful after the PDB is dropped to identify which PDB the backup belongs to.

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