create database link lims_qumas_supply
connect to QPROCESSDEV identified by qprocessdev
using '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.2.73)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME =lims)))';
lims_qumas_supply:创建的数据链名称
QPROCESSDEV:要连接的目标数据库的用户名;
qprocessdev:要连接的目标数据库的密码;
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.2.73)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME =lims))):要连接的数据库的配置;