Question

当我尝试使用hr / hr用户创建数据库连接时，我正在使用JDeveloper我收到此消息：

Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
The Connection descriptor used by the client was:
localhost:1521:ORCL

然后我去命令行，我把tnsping ORCL

C:\Users\Administrator>tnsping ORCL

TNS Ping Utility for 64-bit Windows: Version 12.2.0.1.0 - Production on 20-FEB-2
018 15:55:23

Copyright (c) 1997, 2016, Oracle.  All rights reserved.

Used parameter files:
C:\app\oracle\virtual\product\12.2.0\dbhome_1\network\admin\sqlnet.ora

Used EZCONNECT adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTO
COL=TCP)(HOST=213.130.77.281)(PORT=1521)))
OK (90 msec)

C:\Users\Administrator>é2@

并检查Oracle监听器是否正在运行：

C:\Users\Administrator>lsnrctl status

LSNRCTL for 64-bit Windows: Version 12.2.0.1.0 - Production on 22-FEB-2018 12:34
:05

Copyright (c) 1991, 2016, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=TESTINFRA)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 12.2.0.1.0 - Produ
ction
Start Date                20-FEB-2018 15:02:35
Uptime                    1 days 21 hr. 31 min. 34 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\app\oracle\virtual\product\12.2.0\dbhome_1\network\
admin\listener.ora
Listener Log File         C:\app\oracle\virtual\diag\tnslsnr\TESTINFRA\listener\
alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=TESTINFRA)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Answer 1

在您使用的jdbc错误中：localhost：1521：ORCL

在TNSPING中，它是213.130.77.281

也可以在jdev中使用ip地址。

Answer 2

您的侦听器服务未明确声明此主机上有任何ORCL数据库SID。当您使用TNSPING命令检查连接时，您通过使用Oracle EZCONNECT适配器来解决此问题，该适配器本身解析了所有需要的连接信息，但JDBC驱动程序需要在侦听器中清除SID声明或清除命令以使用EZCONNECT适配器。

有两种方法可以解决这个问题：

打开listener.ora并找到以下行：

(SID_LIST =
 (SID_DESC =
  (SID_NAME = CLRExtProc)
  (ORACLE_HOME = C:\app\oracle\virtual\product\12.2.0\dbhome_1)
  (PROGRAM = extproc)
  (ENVS = "EXTPROC_DLLS=ONLY:C:\app\oracle\virtual\product\12.2.0\dbhome_1\bin\oraclr11.dll")
 )
)

将它们替换为：

(SID_LIST =
 (SID_DESC =
  (SID_NAME = CLRExtProc)
  (ORACLE_HOME = C:\app\oracle\virtual\product\12.2.0\dbhome_1)
  (PROGRAM = extproc)
  (ENVS = "EXTPROC_DLLS=ONLY:C:\app\oracle\virtual\product\12.2.0\dbhome_1\bin\oraclr11.dll")
 )
 (SID_DESC =
  (SID_NAME = ORCL)
  (ORACLE_HOME = C:\app\oracle\virtual\product\12.2.0\dbhome_1)
  (GLOBAL_DBNAME = ORCL)
 )  
)

然后使用“lsnrctl stop”和“lsnrctl start”重新启动监听器。此更改将在侦听器中注册新的SID_DESC块以及数据库SID的描述。

更改JDBC字符串以通过EZCONNECT适配器而不是通过SID进行连接。如果您需要确切的答案，请发布您的JDBC连接字符串，但总的来说，您不应该使用：
```
jdbc:oracle:thin:@213.130.77.281:1521:orcl
```
然后使用：
```
jdbc:oracle:thin:@//213.130.77.281:1521/orcl
```
此更改将告诉JDBC使用EZCONNECT适配器。

ORA-12505，TNS：监听器当前不知道在连接

2 个答案: