Does Block Recovery use Incremental Backups?? (文档 ID 727706.1)
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本文档适用于所有平台
当执行块介质恢复时,RMAN为搜索备份前的所需块会自动搜索闪回日志(如果可用)
APPLIES TO:
Oracle Database - Enterprise Edition - Version 9.2.0.8 to 12.1.0.1 [Release 9.2 to 12.1]本文档适用于所有平台
GOAL
块恢复是否考虑到可用的增量备份?
SOLUTION
包含损坏块的数据文件的备份必须是“完全备份”或“增量级别0备份”
块恢复不使用“增量级别1”备份,因为我们不知道正在恢复的块是否存在于增量备份中,而不完全扫描备份集。 如果块不在增量备份内,这样做可能最终会浪费资源。
因此,BLOCKRECOVER命令将仅使用archivelog备份来完成其恢复。
New from 11gR1 onward
当执行块介质恢复时,RMAN为搜索备份前的所需块会自动搜索闪回日志(如果可用)
- 命令BLOCKRECOVER由RECOVER BLOCK替换 .
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