Oracle教程 2023-02-24

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

V$BACKUP_SPFILE_DETAILS能够查看到服务器参数文件的基本信息。它是一个系统视图，有四个字段：FILE#, CREATION_CHANGE#,CREATION_DATE 以及 CREATION_SCN。

FILE#标识着参数文件的文件名，CREATION_CHANGE#描述了参数文件的创造者的修改的次数，CREATION_DATE表示参数文件的创建时间，CREATION_SCN记录参数文件的系统更改号。

用于查看系统参数文件的创建时参数信息：

SQL> SELECT file#, creation_change#, creation_date FROM v$backup_spfile_details;

FILE# CREATION_CH CHANGE# *CREATION_DATE
───── ────────── ──────── ──────────────────────────
1 2 14-OCT-03 19:43:37
2 3 03-JUL-08 10:39:11

V$BACKUP_SPFILE_DETAILS displays information about all restorable SP files backed up in the backup set.

Column	Datatype	Description
`SESSION_KEY`	`NUMBER`	Session identifier
`SESSION_RECID`	`NUMBER`	Session recid
`SESSION_STAMP`	`NUMBER`	Session stamp
`BS_KEY`	`NUMBER`	Unique backup set identifier
`SET_STAMP`	`NUMBER`	Backup set stamp
`SET_COUNT`	`NUMBER`	Backup set count
`MODIFICATION_TIME`	`DATE`	Time the backup set was modified
`FILESIZE`	`NUMBER`	Size, in bytes, of the SPFILE that was backed up
`FILESIZE_DISPLAY`	`VARCHAR2(4000)`	Same value as the `FILESIZE` column, but converted to a user-displayable format, for example `n`M, `n`G, `n`T, `n`P, and so on
`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

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