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创新互联专注于深泽企业网站建设,响应式网站建设,商城系统网站开发。深泽网站建设公司,为深泽等地区提供建站服务。全流程按需网站建设,专业设计,全程项目跟踪,创新互联专业和态度为您提供的服务首先是查询v$archived_log视图,然后分析applied字段信息,官方说明如下:
Indicates whether an archived redo log file has been applied to the corresponding physical standby database. The value is always NO for local destinations. This column is meaningful on a physical standby database for rows where REGISTRAR = RFS: ■ If REGISTRAR = RFS and APPLIED = NO, then the log file has been received but has not yet been applied. ■ If REGISTRAR = RFS and APPLIED = IN-MEMORY, then the log file has been applied in memory, but the datafiles have not yet been updated. ■ If REGISTRAR = RFS and APPLIED = YES, then the log file has been applied and the datafiles have been updated. This column can be used to identify log files that can be backed up and deleted. When used for this purpose, the value IN-MEMORY should be treated as if it were NO.
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