大神帮忙看下问题所在，感激不尽，关于java连接数据库的

[qq_41081696]

代码目的是连接数据库并读取数据
但是开始运行的时候会宝如下错误
java.sql.SQLRecoverableException: IO 错误: Socket read timed out
at oracle.jdbc.driver.T4CPreparedStatement.fetch(T4CPreparedStatement.java:1080)
at oracle.jdbc.driver.OracleStatement.fetchMoreRows(OracleStatement.java:3716)
at oracle.jdbc.driver.InsensitiveScrollableResultSet.fetchMoreRows(InsensitiveScrollableResultSet.java:1015)
at oracle.jdbc.driver.InsensitiveScrollableResultSet.absoluteInternal(InsensitiveScrollableResultSet.java:979)
at oracle.jdbc.driver.InsensitiveScrollableResultSet.next(InsensitiveScrollableResultSet.java:579)
at database.NotTrfAFCstore.readAFC(NotTrfAFCstore.java:45)
at database.NotTrfAFCstore.<init>(NotTrfAFCstore.java:26)
at Main.allPeiliu(Main.java:46)
at Main.main(Main.java:30)
Caused by: oracle.net.ns.NetException: Socket read timed out
at oracle.net.ns.Packet.receive(Packet.java:350)
at oracle.net.ns.DataPacket.receive(DataPacket.java:105)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:305)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:249)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:171)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:89)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
at oracle.jdbc.driver.T4CMAREngineStream.unmarshalUB1(T4CMAREngineStream.java:429)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:397)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225)
at oracle.jdbc.driver.T4CPreparedStatement.fetch(T4CPreparedStatement.java:1066)
... 8 more
但是以前运行就没有这个问题
求大神解答！！！！！

[verejava]

看一下是否 有防火墙

JDBC 预编译 增删改查

http://www.verejava.com/?id=1715771977132

[itinjp]

看看有没有锁表