Oracle XE 和 DBeaver：ORA-12514，TNS：侦听器当前不知道连接描述符中请求的服务

Question

我需要通过 DBeaver 7.0 连接到 Oracle XE 18.0.0，但由于错误而失败Listener 拒绝连接并出现以下错误： ORA-12514，TNS：侦听器当前不知道连接描述符中请求的服务 使用 SQLPlus 与 Oracle 的连接可以正常工作。 我真的很感激任何有助于解决这个问题的想法。

tnsnames.ora

XE =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.Y.YY)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = XE)
        )
      )
    
    LISTENER_XE =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.Y.YY)(PORT = 1521))
    
    
    ORACLR_CONNECTION_DATA =
      (DESCRIPTION =
        (ADDRESS_LIST =
          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
        )
        (CONNECT_DATA =
          (SID = CLRExtProc)
          (PRESENTATION = RO)
        )
      ) 

监听器.ora

DEFAULT_SERVICE_LISTENER = XE

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:\app\YYY\product\18.0.0\dbhomeXE)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:C:\app\YYY\product\18.0.0\dbhomeXE\bin\oraclr18.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.Y.YY)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

lsnrctl 状态

 LSNRCTL for 64-bit Windows: Version 18.0.0.0.0 - Production on 20-JUN-2020 17:03:44

Copyright (c) 1991, 2018, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.Y.2YY)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 18.0.0.0.0 - Production
Start Date                20-JUN-2020 16:09:45
Uptime                    0 days 0 hr. 54 min. 3 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   C:\app\YYY\product\18.0.0\dbhomeXE\network\admin\listener.ora
Listener Log File         C:\app\YYY\product\18.0.0\diag\tnslsnr\YYYPC\listener\alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.Y.YY)(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

全局名称

SQL> select * from global_name;

GLOBAL_NAME
--------------------------------
XE

服务名称

SQL> select value from v$parameter where name='service_names';

VALUE
----------------------------------------------------------------
XE

Answer 1

我的问题是选择了“服务名称”而不是“SID”，切换到 SID 解决了问题。 （我在连接中指定了数据库名称）

Answer 2

我通过连接系统而不是 sys 解决了我的问题。所以

conn system/[password]@localhost:1521 as sysdba;

Answer 3

我不太了解，但如果您正在使用本地数据库，则可以尝试重新启动计算机。它将解决问题。

这些参考资料可能有用。

1. t_ora_12514_tns_listener_does_not_currently_know_service_requested
2. forums.toadworld.com/t/ora-12514-tns-listener-does-not-currently-know-of-service-requested-in-connect-descriptor
3. dbeaver.io/forum/viewtopic.php?f=2&t=658

Answer 4

对我来说，选择 SID 而不是服务名称，在数据库中我写了 xe，它起作用了。