關於 rman duplicate from active database 搭建dataguard,rmandataguard

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關於 rman duplicate from active database 搭建dataguard,rmandataguard

關於 rman duplicate from active database,具體操作實際為backup as copy ;會拷貝很多空塊;對於那些資料庫資料檔案超過100G的都不是很建議用;在很大程度上會受到網路頻寬的限制,一旦出現異常,就要從頭再來,非常痛苦;
在做dataguard 能不用duplicate from active database ,還是不要用了,最靠譜的還是用rman 先備份一個吧;在做恢複吧

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