java连接oracle数据库，关闭连接出现异常：java.sql.SQLRecoverableException: IO Error: Connection reset

java.sql.SQLRecoverableException: IO Error: Connection reset
at oracle.jdbc.driver.T4CConnection.logoff(T4CConnection.java:612)
at oracle.jdbc.driver.PhysicalConnection.close(PhysicalConnection.java:5094)
at com.sms.send.StartTaskNew.run(SmsSend.java:361)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:189)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at oracle.net.ns.Packet.receive(Packet.java:286)
at oracle.net.ns.DataPacket.receive(DataPacket.java:100)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:172)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:97)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:82)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:119)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:75)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1263)
at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1238)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:296)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:193)
at oracle.jdbc.driver.T4C7Ocommoncall.doOLOGOFF(T4C7Ocommoncall.java:59)
at oracle.jdbc.driver.T4CConnection.logoff(T4CConnection.java:593)
... 4 morere