数据库创建DBLINK

create public database link 任意名称
　　connect to 连接数据库账户 identified by 连接数据库密码
　　using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.15.103)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = CRMTESTDB)))';