1.冗余度策略redundancy 该配置是用来决定哪些备份文件的状态是否为obsolete(过时的)或者是available(可用的)。设定至少需要保留最近的N份备份,更早的备份会被obsolete。 比如,冗余度策略为2,如果有3份备份,则最早的一份就会被废弃。 CONFIGURE RETENTION POLICY TO redundancy 2; 若不使用保留策略,CONFIGURE RETENTION ...
你在RMAN 中开启了备份优化。你发布了下列 RMAN 命令来配置一个基于冗余度的保留策略: CONFIGURE RETENTION POLICY TO REDUNDANCY 3; 哪个称述是正确的? A. 这个命令失败,因为你不能在启用备份优化的时候配置基于冗余的保留策略 B. 备份优化被执行,但是 RMAN 会考虑基于冗余的备份策略来确定应该被备份的数据文件 C...
(1)redundancy(冗余):默认是冗余 1 rman> configure retention policy to redundancy x; (2)recovery window(恢复窗口) 1 rman> configure retention policy to recovery window of x...
rman> configure retention policytoredundancy x; (2)recovery window(恢复窗口) 1 rman> configure retention policytorecovery windowofx days; 配置恢复窗口期的时候,时间应该不大于参数control_file_record_keep_time 的值。 取消备份策略:(永不将备份置为obsolete) 1 rman> configure retention policytonone; 如...
rman> configure retention policytoredundancy x; (2)recovery window(恢复窗口) 1 rman> configure retention policytorecovery windowofx days; 配置恢复窗口期的时候,时间应该不大于参数control_file_record_keep_time 的值。 取消备份策略:(永不将备份置为obsolete) ...
ORACLE11G默认的备份保留策略是用该方法设置的,且REDUNDANCY为1。可以使用命令CONFIGURE RETENTION POLICY CLEAR恢复策略为默认值。还可以用命令CONFIGURE RETENTION POLICY TO NONE进行策略设置,此时REPORT OBSOLETE和DELETE OBSOLETE将不把任何备份文件视为废弃。
A.备份优化被禁用 B.备份优化暂时禁用,因为指定的冗余基于保留策略 C.备份优化执行成功,但RMAN考虑冗余保留策略时,RMAN决定哪个数据文件应备份 D.该命令将失败,因为你不能当备份配置冗余为基础的保留策略 已启用优化 查看答案
A. It does not allow you to change the moving window size. B. Adaptive threshold functionalities use it by default to compute statistics. C. It is created by default with the window size being equal to the AWR retention time. D. It is created when the first snapshot is collected by th...
Examine the RMAN configuration parameters: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # defaultCONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE CONTROLFILE AUTOBACKUP OFF; #defaultCONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET ; CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE ...
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