本文介绍了Oracle中的数据库连接的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Exception in thread "main" 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
The Connection descriptor used by the client was:localhost:1521:orcl
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:261)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oraenter code herecle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at com.test.Date.main(Date.java:13)
这是我的代码
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","system","tiger");
我也查看了tnsnames.ora
文件
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = orcl)
)
)
我在类路径中添加了ojdbc14.jar
,并且我正在使用oracle10g
I added ojdbc14.jar
in my classpath and i am using oracle10g
请您帮我一下.
推荐答案
就像提到的,请检查您是否能够执行tnsping
之类的tnsping
,如果工作正常,请尝试从sqlplus或任何工具连接到数据库如TOAD
或SQLDeveloper
.如果发现任何错误,请发布错误,否则请使用以下内容连接到数据库并查看其工作方式.
Like mentioned check whether you are able to do a tnsping
like tnsping orcl
and if that works fine try to connect to your database from sqlplus or any tool like TOAD
or SQLDeveloper
. Post the errors if you are getting any, else use the following to connect to your database and see how it works.
try {
Class.forName("oracle.jdbc.OracleDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
return;
}
Connection con = null;
try {
con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","system","tiger");
} catch (SQLException ex) {
ex.printStackTrace();
} finally {
close(connection);
}
return
Update 1
Update 1
您可以尝试使用以下代码
Can you try with the following code
jdbc:oracle:thin:@//localhost:1521:orcl","system","tiger
如果这样不起作用,也请尝试
If that doesn't work try this as well
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCPS)(HOST=<host>)(PORT=<port>))(CONNECT_DATA=(SERVICE_NAME=<service>)))
更多信息此处
致谢
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