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，我得到了一个：
Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor
错误消息。我可以使用相同的凭据，SID等从SQL Developer连接而没有问题。
对于那些没有使用过亚马逊RDS的用户，它是一个在其AWS服务上提供的托管数据库。因为它是受管理的，所以我无法访问与本地安装相同的工具，因此到目前为止还没有弄清楚我是否或如何访问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();
}
....
修改的
通过以下语句找到以下侦听器信息：
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使用相同的错误ORCL_A。
答案 0 :(得分：1)
JDBC连接字符串不正确。
字符串应为：jdbc:oracle:thin:[user/password]@//<host><:port>/<service>
更改连接字符串解决了问题。
答案 1 :(得分：0)
如果您使用的是AWS RDS
之类的第三方服务，请尝试此操作
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)))"
}