RMAN备份动态性能视图 V$BACKUP_PIECE
V$BACKUP_PIECE displays information about backup pieces from the control file. Each backup set consists of one or more backup pieces.
V$BACKUP_PIECE显示有关从控制文件的备份片信息。每个备份集包含一个或多个备份片。
| Column | Datatype | Description |
|---|---|---|
RECID |
NUMBER |
Backup piece record ID |
STAMP |
NUMBER |
Backup piece record stamp |
SET_STAMP |
NUMBER |
Backup set stamp |
SET_COUNT |
NUMBER |
Backup set count |
PIECE# |
NUMBER |
Backup piece number (1-N) |
COPY# |
NUMBER |
Indicates the copy number for backup pieces created with duplex enabled. 1 if the backup piece is not duplexed. 表示启用双重备份功能创建的备份片的拷贝数。如果备份片不是双重的则为1。 |
DEVICE_TYPE |
VARCHAR2(17) |
Type of the device on which the backup piece resides. Set to DISK for backup sets on disk. See Also: 在备份片驻留的设备类型。在磁盘上的备份设置为DISK。另请参见：V $ BACKUP_DEVICE。 |
HANDLE |
VARCHAR2(513) |
Backup piece handle identifies the backup piece on restore 备份片句柄定义了转储时的备份片 |
COMMENTS |
VARCHAR2(64) |
Comment returned by the operating system or storage subsystem. Set to NULL for backup pieces on disk. This value is informational only; not needed for restore. 通过操作系统或存储子系统返回的注释，磁盘上的备份片为NULL。设置为null在磁盘上的备份片。此值仅供参考;不需要恢复。 |
MEDIA |
VARCHAR2(65) |
Name of the media on which the backup piece resides. This value is informational only; not needed for restore. 在其上备份片驻留的媒体名称。此值仅供参考;不需要恢复。 |
MEDIA_POOL |
NUMBER |
The media pool in which the copy resides. This is the same value that was entered in the POOL operand of the Recovery ManagerBACKUP command.副本所在的介质池，这和通过RMAN BACKUP命令进入POOL操作的值相同。 |
CONCUR |
VARCHAR2(3) |
(YES | NO) Indicates whether the piece on a media that can be accessed concurrently表示备份片所在的介质是否可以被并发的访问。 |
TAG |
VARCHAR2(32) |
Backup piece tag. The tag is specified at backup set level, but stored at piece level. 备份片标签，标签在备份集级别指定，但存储在备份片级别。 |
STATUS |
VARCHAR2(1) |
Indicates the status of the piece: A(available), D (deleted), or X (expired)表示备份片的状态，A为可用，D为已经删除，X为过期。 |
START_TIME |
DATE |
Starting time |
COMPLETION_TIME |
DATE |
Completion time |
ELAPSED_SECONDS |
NUMBER |
Number of elapsed seconds |
DELETED |
VARCHAR2(3) |
(YES/NO) NO indicates that the file still exists.YES indicates the file no longer exists because it has been deleted.NO表示文件仍然存在，YES表示文件再在存在，因为它已经被删除。 |
BYTES |
NUMBER |
Size of the backup piece (in bytes) 备份片大小（字节），可以用这个字段统计备份大小信息。 |
IS_RECOVERY_DEST_FILE |
VARCHAR2(3) |
Indicates whether the file was created in the fast recovery area (YES) or not (NO)表明文件是否被创建在快速恢复区 |
RMAN_STATUS_RECID |
NUMBER |
Owning V$RMAN_STATUS record ID |
RMAN_STATUS_STAMP |
NUMBER |
Owning V$RMAN_STATUS record stamp |
COMPRESSED |
VARCHAR2(3) |
Indicates whether the backup piece is compressed (YES) or not (NO)表示备份片是否被压缩 |
BACKED_BY_VSS |
VARCHAR2(3) |
Whether or not the file has been backed up by Volume Shadow Copy Service (VSS). This column is reserved for internal use. 文件是否被VSS备份，这个列被提供于内部使用。 |
ENCRYPTED |
VARCHAR2(3) |
A value of YES means an encrypted backup, otherwise not an encrypted backup.YES表示加密备份，否则为非加密备份。 |
BACKED_BY_OSB |
VARCHAR2(3) |
A value of YES means the backup was done to Oracle Secure Backup. Otherwise, backed up by other third party tape library.YES表示备份被设置为Oracle Secure Backup，否则备份为第三方带库。 |