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?Oracle?????????????Database Link??????????????????????????????????????????????????
??????????????SQL??????????????????SQL??????
create database link FistDBlink connection connect to dbName identified by dbPassword using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.4.1)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = orcl)));
dbName?dbPassword???????????????????????????????????????????
select * from db.tb_test@FistDBlink;
@FistDBlink???????????????????????????????????
drop database link FistDBlink;
????????????????Oracle????????????????????????????????????????????
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