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java.sql.SQLRecoverableException:   IO 錯誤 : The Network Adapter could not establish the   connection

        at   oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:489)

        at   oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553)

        at   oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254)

        at   oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)

        at   oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)

        at   java.sql.DriverManager.getConnection(DriverManager.java:582)

        at   java.sql.DriverManager.getConnection(DriverManager.java:185)

        at qt.utils.DBCP.ConnectionPool.CreatePooledConnection(ConnectionPool.java:467)

        at   qt.utils.DBCP.ConnectionPool.getActiveConnection(ConnectionPool.java:776)

        at   qt.utils.DBCP.ConnectionPool.prepareStatement(ConnectionPool.java:566)

        at cn.qtone.xxt.base.db.DBControl.getValue(DBControl.java:856)

        at   cn.qtone.xxt.base.utiltity.CheckPurview.getFunctionIdNoCheck(CheckPurview.java:169)

Caused by:   oracle.net.ns.NetException: The Network Adapter could not establish the   connection

        at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:439)

        at   oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:454)

        at   oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:693)

        at   oracle.net.ns.NSProtocol.connect(NSProtocol.java:251)

        at   oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1140)

        at   oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:340)

        ... 37 more

Caused by:   java.net.SocketTimeoutException: connect timed out

        at   java.net.PlainSocketImpl.socketConnect(Native Method)

        at   java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)

        at   java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)

        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)

        at   java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

        at   java.net.Socket.connect(Socket.java:529)

        at   oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:149)

        at oracle.net.nt.ConnOption.connect(ConnOption.java:133)

        at   oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:405)

        ... 42 more

#!/bin/sh

while true

do

for target in 57   58

do

ip_add="192.168.205."$target

echo "   `date` script starting====================================="   >>/tmp/$ip_add.log

echo -e   "\n"|telnet $ip_add 1521|grep Connected >>/tmp/$ip_add.log

sleep 1

done;

done;