Oracle 视图 V$BACKUP_NONLOGGED 官方解释，作用，如何使用详细说明
本站中文解释
_BLOCKS
V$BACKUP_NONLOGGED_BLOCKS视图展示了伴随直接跳过日志记录而发生的非日志块拷贝。它报告取得从几个数据文件(以字节数为单位)以及块数量的备份工作量，报告为每个备份还复制的非日志块的数量。
用途：该视图可以查看几个数据文件发生了非日志块备份，以及这些备份要复制的非日志块数量。
使用方法：可以使用下面的SQL查询来查看:
SELECT * FROM V$BACKUP_NONLOGGED_BLOCKS;
官方英文解释
V$BACKUP_NONLOGGED displays information about nonlogged block ranges in data file backups, recorded in the control file.
| Column | Datatype | Description |
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Nologged backup record ID |
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Nonlogged backup record stamp |
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Backup set stamp |
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Backup set count |
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Backup piece that contains the range of nonlogged blocks |
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Absolute file number of the data file that contains this range of nonlogged blocks |
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Block number of the first nonlogged block in the range of nologged blocks |
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Number of nonlogged blocks found starting with |
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The smallest SCN on which any block in this block range became nonlogged. NULL if unknown. |
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The time that corresponds to |
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The resetlogs SCN of the incarnation on which this block range was first marked as nonlogged. NULL if unknown. |
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The resetlogs time of the incarnation on which this block range was first marked as nologged. NULL if unknown. |
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The object ID this range belongs to. If this field is NULL, the object number is unknown. |
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The reason why this block range appears in this list, for example, primary file offline, could not talk to primary, non-standby recovery, and so on. For Oracle Database 12c and later releases, it is always |
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The ID of the container to which the data pertains. Possible values include:
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