1.创建odbc
2.在product\11.2.0\dbhome_1\hs\admin\ 下拷贝initdg4odbc,把名字改为initcrmsql（init+所建odbc的名称）
HS_FDS_CONNECT_INFO =crmsql #odbc名称HS_FDS_TRACE_LEVEL= 0HS_FDS_RECOVERY_ACCOUNT=sa #要连接的数据库名称HS_FDS_RECOVERY_PWD=123456 #要连接的数据密码
3.配置product\11.2.0\dbhome_1\NETWORK\ADMIN 文件夹下listener，增加
SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = CLRExtProc)(ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)(PROGRAM = extproc)(ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll"))# 增加开始(SID_DESC =(SID_NAME = crmsql)(ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)(PROGRAM =dg4odbc))# 增加结束)
tnsnames文件中增加
crmsql= (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST= 192.168.2.4)(PORT=1521))(CONNECT_DATA=(SID=crmsql))(HS=OK))
3.重启oracle监听。
4.打开sql plus，输入连续的oracle的用户名和账号。
create public database link crmsqlconnect to sa indentified by "123456"using 'crmsql';
5.验证
select * from test@crmsql
