RMAN-06053：unable to perform media recovery because of missing log
错误码
错误描述：unable to perform media recovery because of missing log
错误原因：This message is accompanied with another message identifying the missing log. The log would be needed to perform the media recovery, but the log is not on disk and no backup set containing the log is available.
解决方法：Determine if a backup set containing the log can be made available. If so, then use the CHANGE command to make the backup set available and retry the command. If not, then a point-in-time recovery up to the missing log is the only alternative.
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