2

我正在尝试使用 JDBC 连接到我的 RDS 实例。当我尝试通过代码时,我得到:

Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor

错误信息。我可以使用相同的凭据、SID 等毫无问题地从 SQL Developer 连接。

对于那些没有使用过 Amazon 的 RDS 的人来说,它是在他们的 AWS 服务上提供的托管数据库。因为它是托管的,所以我无法访问与本地安装相同的设施,因此到目前为止我还没有弄清楚是否或如何访问该tnsnames.ora文件以获取侦听器信息。

我的代码如下:

public Connection connectToDatabase() {
        String url = "jdbc:oracle:thin:@//blahblahyadayada-eastnorthest-1.rds.amazonaws.com:1521/ORCL,username,password";
        try {
            return DriverManager.getConnection(url); // <-- error is here
        } catch (SQLException e) {
            e.printStackTrace();
            try {
                return DriverManager.getConnection(url);
            } catch (SQLException e1) {
                e1.printStackTrace(); 

            }
        }
        return null;
    }


public static void main(String[] args) {

    Connection conn = db.connectToDatabase();
        try {
            ResultSet results = db.executeQuery("select 1;", conn);
            if (results.next()) {
                LOGGER.info("Results of query: {}",
                        String.valueOf(results.getInt(1)));
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 ....

编辑

通过以下语句找到以下监听器信息:

show parameter db_name;
show parameter remote_listener;
show parameter listener_networks
show parameter local_listener;

NAME                                               TYPE        VALUE                                                                                                
-------------------------------------------------- ----------- ---------------------------------------------------------------------------------------------------- 
db_name                                            string      ORCL                                                                                                 

NAME                                               TYPE        VALUE                                                                                                
-------------------------------------------------- ----------- ---------------------------------------------------------------------------------------------------- 
remote_listener                                    string                                                                                                           

NAME                                               TYPE        VALUE                                                                                                
-------------------------------------------------- ----------- ---------------------------------------------------------------------------------------------------- 
listener_networks                                  string                                                                                                           

 NAME                                               TYPE        VALUE                                                                                                
-------------------------------------------------- ----------- ---------------------------------------------------------------------------------------------------- 
local_listener                                     string      (ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))   

侦听器的 RDS 参数不可修改并显示为动态。

select * from DBA_SERVICES;显示:

SERVICE_ID NAME                                                              NAME_HASH NETWORK_NAME                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     CREATION_DATE CREATION_DATE_HASH FAILOVER_METHOD                                                  FAILOVER_TYPE                                                    FAILOVER_RETRIES FAILOVER_DELAY MIN_CARDINALITY MAX_CARDINALITY GOAL         DTP ENABLED AQ_HA_NOTIFICATIONS CLB_GOAL EDITION                      
---------- ---------------------------------------------------------------- ---------- -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------------- ------------------ ---------------------------------------------------------------- ---------------------------------------------------------------- ---------------- -------------- --------------- --------------- ------------ --- ------- ------------------- -------- ------------------------------
         1 SYS$BACKGROUND                                                    165959219                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  13-05-01                       0                                                                                                                                                                                                   NONE         N   NO      NO                  SHORT                                   
         2 SYS$USERS                                                        3427055676                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  13-05-01                       0                                                                                                                                                                                                   NONE         N   NO      NO                  SHORT                                   
         3 ORCL_A                                                           3453147048 ORCL_A  

我修改了我的连接字符串以尝试ORCL_A同样的错误。

4

2 回答 2

2

JDBC 连接字符串不正确。

字符串应该是:jdbc:oracle:thin:[user/password]@//<host><:port>/<service>

更改连接字符串解决了该问题。

于 2013-09-11T17:00:03.037 回答
0

如果您使用任何第三方服务,请尝试此操作AWS RDS

oracledb.getConnection(
  {
    user          : "hr",
    password      : mypw,  // mypw contains the hr schema password
    connectString : "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=mymachine.example.com)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)))"
  } 
于 2020-02-27T22:46:19.747 回答