Question

我试图哄骗Oracle XE接受来自JDBC的连接。我使用XE安装中的ojdbc6.jar（还有ojdbc5和ojdbc6_g jars）。我已经尝试使用oracle.jdbc.OracleDriver和oracle.jdbc.driver.OracleDriver，驱动程序类已注册。我使用描述符：jdbc：oracle：thin：@localhost：1521：XE。

我也尝试以/ XE结束而不是：XE，我有时会看到它。还尝试了实际主机名Kaveri而不是localhost。

我可以使用sqlplus登录，数据库已打开，主服务和TNS监听器服务正在运行。

的listener.ora：

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = E:\Data\OracleXE\app\oracle\product\11.2.0\server)
  (PROGRAM = extproc)
)
(SID_DESC =
  (SID_NAME = CLRExtProc)
  (ORACLE_HOME = E:\Data\OracleXE\app\oracle\product\11.2.0\server)
  (PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
  (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
  (ADDRESS = (PROTOCOL = TCP)(HOST = Kaveri)(PORT = 1521))
)
)

DEFAULT_SERVICE_LISTENER = (XE)

tsnames.ora：

XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Kaveri)(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) 
) 
)

我得到了

java.util.concurrent.TimeoutException
at java.util.concurrent.FutureTask.get(Unknown Source)
at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand.awaitConnection(OpenConnectionCommand.java:132)
at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand.access$100(OpenConnectionCommand.java:45)
at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand$2.run(OpenConnectionCommand.java:115)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

或者使用我们自己的java程序

java.sql.SQLRecoverableException: IO Error: Socket read timed out
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:673)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:715)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:385)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:30)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:564)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
...
Caused by: oracle.net.ns.NetException: Socket read timed out
at oracle.net.ns.Packet.receive(Packet.java:350)
at oracle.net.ns.NSProtocolStream.negotiateConnection(NSProtocolStream.java:153)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:263)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1360)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:486)
... 39 more

lsnrctl似乎在一段时间后挂起了：

> lsnrctl status

LSNRCTL for 64-bit Windows: Version 11.2.0.2.0 - Production on 04-JUL-2017 
17:29:09

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
TNS-12560: TNS:protocol adapter error
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=Kaveri)(PORT=1521)))

这是Oracle XE在Windows 10上的“重新安装”。为了避免疑问，我也关闭了防火墙，没有效果（我希望！）。

如何调试连接到Oracle？谢谢。

更新：当我将TNSListener列为正在运行时，我正在撒谎 - 或者说是Windows - 情况实际上是“本地计算机上的OracleXETNSListener服务已启动然后停止......”

Answer 1

如果我在配置文件中使用localhost而不是Kaveri，那么监听器就会保持正常状态（为什么，因为主机名是Kaveri ..？）

之后Bob 1174's answer here is what was needed。

TimeoutException通过JDBC连接到Oracle XE 11

1 个答案: