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   ´ò¿ªÊý¾Ý¿â£ºOPEN DATABASE OPEN;
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   Æô¶¯Êý¾Ý¿âµ½mount״̬£ºSTARTUP MOUNT;
   ÉèÖõÚÒ»¸ö¹éµµÂ·¾¶£ºALTER SYSTEM SET LOG_ARCHIVE_DEST_1 ='LOCATION=/A/B';
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