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Oracle DB Link
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SQL code:

create public database link DB_LINK_NAME connect to TargetDatabaseUserName identified by TargetDatabasePassword using 'TargetDatabaseSIDName';



2. Ö±½Ócreate Ò»ÕÅtable£¬°ÑÊý¾Ý×îºóµÄ500ÌõÊý¾Ýcopy¹ýÀ´¾Í¿ÉÒÔÁË..
SQL code:

create table TBName as select * from ( select * from table TableName@DBLINK_NAME order by rowid desc) where rownum<=500;




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exp city/cscity@wcdly tables=yhymxz query = \"where month='2008-05\" file=d:\aa.dmp log=d:\aa_log.log

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