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create database link hr_tables
connect to manbu
identified by "admin"
using 'WALK'
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manbuÊÇÔ¶³ÌÊý¾Ý¿âµÄÊý¾Ý¿âÓû§Ãû
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select user_name from mall_user@hr_tables;
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create synonym mall_user for mall_user@hr_tables;


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