使用Navicat for Oracle 链接，出现ORA-12514:

找到 tnsnames.ora 文件，添加文件

   CRMHXDP =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = XX.XXX.XX.X)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = crmpdb)
    )
 ) 

其中

XX.XXX.XX.X

是你访问的地址