Oracle连接提问

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java.sql.SQLException: Undefined Error
 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(DriverManager.java:582)
 at java.sql.DriverManager.getConnection(DriverManager.java:185)
 at com.chinasofti.utils.test.main(test.java:24)
Caused by: oracle.net.ns.NetException: Undefined Error
 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)
 ... 7 more
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