RMAN-06275：invalid number of days specified for report
错误码
错误描述：invalid number of days specified for report
错误原因：This message is issued in response to the REPORT NEED RECOVERY WINDOW OF n DAYS or REPORT NEED BACKUP DAYS n command when an invalid number of days was specified in input command.
解决方法：The number of days specified in REPORT command must be greater than zero.
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