ORA-12505, TNS:监听器当前不知道连接描述符中给定的SID

我已经在我的windows 7 64位操作系统中安装了Oracle 11g Express Edition Release 2，并试图执行JDBC程序，然后我得到了以下错误:

java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:412)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:531)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:221)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at com.jlcindia.jdbc.JDBCUtil.geOracleConnection(JDBCUtil.java:28)
    at Lab3O.main(Lab3O.java:15)
Caused by: oracle.net.ns.NetException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
    at oracle.net.ns.NSProtocol.connect(NSProtocol.java:385)
    at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1042)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:301)
    ... 8 more

当前回答

当你浏览start->run->services.msc时，请检查OracleServiceXE和OracleXETNSListener的状态是否已启动。

对于我的情况下，只有OracleXETNSListener启动，但OracleServiceXE没有启动，当我开始右键单击->启动并检查连接它为我工作

2015-08-10 14:09:55

其他回答

我的oracle DB服务器IP最近发生了变化，我在/etc/hosts文件中硬编码了值:

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.210.61 myoracledb.mycompanydomain.com myoracledb

必须将192.168.210.61 IP更改为新的IP, lsnrctl停止，然后lsnrctl启动这些步骤解决了我的问题。

2022-07-08 11:01:07

我还没有看到广泛讨论的一种可能性是，在主机上解析主机名本身可能存在问题。如果在/etc/hosts中没有$(hostname)条目，Oracle侦听器会感到困惑，不会出现。

这原来是我的问题，在/etc/hosts中添加主机名和ip地址解决了这个问题。

2014-04-15 18:35:26

I too faced the same issue. I had installed Oracle Express edition 10g in Windows XP OS using VMware and it was working fine. Since it was very awkward typing SQL queries in the SQL utility provided by 10g and since I was used to working with SQL developer, I installed 32 bit SQL developer in XP and tried connecting to my DB SID "XE". But the connection failed with error-ORA-12505 TNS listener doesn't currently know of SID given in connect descriptor. I was at sea as to how this problem occurred since it was working fine with the SQL utility and I had also created few Informatica mappings using the same. I did browse a lot on this stuff hither thither and applied the suggestions offered to me after pinging the status of "lsnrctl" on public forums but to no avail. However, this morning I tried creating a new connection again, and Voila, it worked with no issues. I am guessing after reading in few posts that sometimes listener listens before the DB connects or something(pardon me for my crude reference as I am a newbie here) but I suggest to just restart the machine and check again.

2013-10-22 02:42:59

除了运行服务(OracleServiceXE,OracleXETNSListener)之外，您的防病毒软件/防火墙可能仍然会阻止它们。只要确保它们没有被阻挡。

2019-03-17 06:13:40

当我试图使用SQL开发器连接到oracle DB时，我得到了这个错误ORA-12505, TNS:侦听器目前不知道连接描述符中给定的SID。

使用的JDBC字符串是JDBC:oracle:thin:@myserver:1521/XE，显然是正确的，两个强制的oracle服务OracleServiceXE, OracleXETNSListener已经启动并运行。

我解决这个问题的方法(在Windows 10中)

 1. Open run command.
 2. Type services.msc 
 3. Find services with name OracleServiceXE and OracleXETNSListener in the list.
 4. Restart OracleServiceXE service first. After completing the restart try restarting OracleXETNSListener service.

2019-02-21 10:59:08

ORA-12505, TNS:监听器当前不知道连接描述符中给定的SID

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