Question

好的一切都很好，直到昨天我突然得到这个错误 ORA-12514：TNS：监听器当前不知道连接描述符中请求的服务
没有任何修改

XE =
  (DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = jainam-2b1c493d)(PORT = 1521))
(CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = XE)
)
)

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
     (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    )
    (CONNECT_DATA =
        (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

  ORACLR_CONNECTION_DATA = 
      (DESCRIPTION = 
     (ADDRESS_LIST = 
     (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1)) 
    ) 
     (CONNECT_DATA = 
   (SID = CLRExtProc) 
   (PRESENTATION = RO) 
 ) 
)

我完全陷入困境，不知道该怎么做。我从这里尝试了帮助 http://dba-oracle.com/t_ora_12514_tns_listener_does_not_currently_know_service_requested.htm 但没用感谢

编辑：
这是输出到lsnrctl service

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 3 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
      "ORACLE SERVER" established:0 refused:0 current:0 max:25 state:ready
        CLRExtProc
     (ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\NTN_6B4_641B624E_B22.ORA))
  "ORACLE SERVER" established:0 refused:0 current:0 max:25 state:ready
     CLRExtProc
     (ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\NTN_6B4_641B624E_282.ORA))
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
  "DEDICATED" established:0 refused:0
     LOCAL SERVER
Service "XEXDB" has 1 instance(s).
 Instance "xe", status READY, has 1 handler(s) for this service...
 Handler(s):
  "D000" established:0 refused:0 current:0 max:1022 state:ready
     DISPATCHER <machine: JAINAM-2B1C493D, pid: 3708>
     (ADDRESS=(PROTOCOL=tcp)(HOST=jainam-2b1c493d)(PORT=2763))
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
  "DEDICATED" established:0 refused:0 state:ready
     LOCAL SERVER
The command completed successfully

Answer 1

对我来说，它有助于将以下SID_DESC添加到C：\ oraclexe \ app \ oracle \ product \ 11.2.0 \ server \ network \ ADMIN \ listener.ora

SID_LIST_LISTENER =
  (SID_LIST =
    ...
    (SID_DESC =
      (SID_NAME = XE)
      (ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
    )
  )

重新启动侦听器和数据库后，访问再次起作用。

感谢http://grow-n-shine.blogspot.de/2011/11/oracle-11g-xe-issue-ora-12514.html

Answer 2

您遇到此类错误的原因之一是因为数据库实例在侦听器之前启动。必须始终先启动监听器。

检查数据库实例是否已启动并正在运行
检查lsnrctl service命令的输出，看看注册了哪些服务。
检查连接到实例时是否正确指定了SERVICE_NAME。
如果在侦听器发生之前发生了数据库实例，有时您只需稍等一下，或者可以执行alter system register以注册实例。

Answer 3

打开SQL Plus并连接到系统用户：

system/p@ssword

并运行两个命令：

SQL> alter system set LOCAL_LISTENER='(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))' scope=both;
SQL> alter system register;

ORA 12514错误：TNS监听器错误

3 个答案: