我已经在tomcat服务器上部署了我的应用程序，但随机我的服务器停止提供日志，间歇性地应用程序挂起但是在执行Ctrl + c之后，日志再次开始，应用程序开始工作。日志如下：
2017-04-13 12:50:42,711 [http-nio-8080-exec-12] WARN org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 17002, SQLState: 08006
2017-04-13 12:50:42,711 WARN - SqlExceptionHelper - SQL Error: 17002, SQLState: 08006
2017-04-13 12:50:42,711 [http-nio-8080-exec-12] ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - IO Error: Socket read timed out
2017-04-13 12:50:42,711 ERROR - SqlExceptionHelper - IO Error: Socket read timed out
2017-04-13 12:50:42,711 [http-nio-8080-exec-12] ERROR org.springframework.transaction.interceptor.TransactionInterceptor - Application exception overridden by rollback exception
org.springframework.dao.DataAccessResourceFailureException: could not extract ResultSet; nested exception is org.hibernate.exception.JDBCConnectionException: could not extract ResultSet
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:257)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:244)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:491)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy112.list(Unknown Source)
at com.parkwaypantai.spos.backend.common.service.impl.ClinicUserServiceImpl.list(ClinicUserServiceImpl.java:96)
Caused by: org.hibernate.exception.JDBCConnectionException: could not extract ResultSet
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:115)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:79)
at org.hibernate.loader.Loader.getResultSet(Loader.java:2123)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1911)
Caused by: java.sql.SQLRecoverableException: IO Error: Socket read timed out
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:899)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1175)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1296)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3613)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3657)
Caused by: oracle.net.ns.NetException: Socket read timed out
at oracle.net.ns.Packet.receive(Packet.java:347)
at oracle.net.ns.DataPacket.receive(DataPacket.java:106)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:324)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:268)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:190)
我也尝试获取线程转储，但是当服务器挂起时，甚至转储都不会在那个时间点出现...请帮助我，因为我遇到了这种情况......提前感谢... < / p>