有个服务器上，perl/sqlplus 连接都没有问题，就是jdbc连接有问题，每次都是连三四次后，就会卡住，然后报错，connection reset。 同网段的其他服务器都没有问题。

写了一个非常简单的测试代码。

import java.sql.*;


public class V{

        public static void main(String args[]) throws Exception{

                Class.forName("oracle.jdbc.driver.OracleDriver");
                Connection con=DriverManager.getConnection(args[0],args[1],args[2]);
                System.out.println("connect over");
                con.close();
                System.out.println("close over");
        }

}

结果就是多次连接后，再连接就卡住，一两分钟后报错。正常我们肯定有几十上百个连接。

Exception in thread "main" java.sql.SQLRecoverableException: IO Error:
Connection reset

    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:428)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:536)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
    at java.sql.DriverManager.getConnection(DriverManager.java:571)
    at java.sql.DriverManager.getConnection(DriverManager.java:215)
    at V.main(V.java:9) Caused by: java.net.SocketException: Connection reset
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:159)
    at oracle.net.ns.DataPacket.send(DataPacket.java:199)
    at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211)
    at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:175)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:100)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:85)
    at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
    at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
    at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1122)
    at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1099)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:288)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
    at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
    at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:366)
    ... 7 more

后来实在没辙重装系统了，还是有问题。
请问有人遇到过这个问题吗。。。