Oralce 错误-12154，只有服务端没有客户端

Question

本地安装服务端，没有客户端，本地用命令sqlplus user/[e-mail]
可以连接到远端服务器
写C程序

int main()
{
   EXEC SQL CONNECT :user identified by :passwd using :aaa.gov
    if(sqlca.sqlcode !=0)
  {
    return -1;
   }
  return 0;
}

错误码为-12154

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

4、在listener.ora添加如下内容：

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    )
  )

这两个文件已经修改了
这个错误应该找不到连接符 本地如果不安装客户端 能有办法找到连接符么？？

Answer 1

C语言不是这样连接ORACLE数据库的。