【发布时间】：2019-03-27 23:49:02
【问题描述】：
我知道这是一个常见问题，我已经尝试了所有可以在网上找到的方法，但都没有解决我的问题。我什至卸载了 Oracle 11g XE 和 SQL Developer，删除了我能找到的所有文件并重新安装，但没有任何帮助。
我可以通过 SQL*Plus 命令行和 CMD 完美连接。
我从来没有遇到过这个问题，但是从今天开始，当我尝试连接 DQL Developer 时，我一直收到这个错误：
与
这是我的 tnsnames.ora 文件：
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = DESKTOP-5MFACN6)(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)
)
)
listener.ora 文件：
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = DESKTOP-5MFACN6)(PORT = 1521))
)
)
DEFAULT_SERVICE_LISTENER = (XE)
来自 SQL*Plus 的一些测试的输出：
Connected to:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
SQL> select value from v$parameter where name='service_names';
VALUE
--------------------------------------------------------------------------------
XE
SQL> select instance from v$thread;
INSTANCE
--------------------------------------------------------------------------------
xe
SQL> select host_name,instance_name,version from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME VERSION
---------------- -----------------
DESKTOP-5MFACN6
xe 11.2.0.2.0
SQL> select global_name from global_name;
GLOBAL_NAME
--------------------------------------------------------------------------------
XE
和监听器状态：
C:\Users\Arne>lsnrctl status
LSNRCTL for 64-bit Windows: Version 11.2.0.2.0 - Production on 23-OCT-2018 18:27:07
Copyright (c) 1991, 2014, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 64-bit Windows: Version 11.2.0.2.0 - Production
Start Date 23-OCT-2018 18:19:35
Uptime 0 days 0 hr. 7 min. 31 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\DESKTOP-5MFACN6\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=DESKTOP-5MFACN6)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
关于如何解决这个问题的任何想法？我真的不知道我还能做什么
【问题讨论】：
-
DESKTOP-5MFACN6是否解析为与 localhost 相同，即 127.0.0.1？如果您在 SQL Developer 中使用该名称作为连接，会发生什么情况？ -
我什至非常想尝试，但那没有用。 ...但是...我关掉了我的电脑，离开了一会儿，当我回来时我又试了一次，由于某种原因它又工作了...！很奇怪，因为重新启动之前没有做任何事情。现在由于某种原因已修复。这样的解脱。希望它现在保持这种状态，因为它需要完成一些工作。 :)
-
重启你的笔记本电脑意味着你的监听器已经重启，这可能是需要的。
标签： oracle oracle-sqldeveloper sqlplus