关于 使用druid后的一些问题.?报错

@wenshao 你好，想跟你请教个问题：

程序设这样,由中心端一个程序向远端(异地)N个数据库写数据,数据量比较大.

经常会出现一些报错 如:

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 通过端口 1433 连接到主机 ****** 的 TCP/IP 连接失败。错误:“null。请验证连接属性，

 ERROR - m.alibaba.druid.util.JdbcUtils - close connection error 
java.sql.SQLException: Io 异常: No route to host
ERROR - m.alibaba.druid.util.JdbcUtils - close connection error 
java.sql.SQLException: Io 异常: Connection reset
 ERROR - anager.impl.ExecuteManagerImpl - loopWaitCount 0, wait millis 1000, active 5 
com.alibaba.druid.pool.GetConnectionTimeoutException: loopWaitCount 0, wait millis 1000, active 5

昨天突然同一时间  2个程序都停了.  日志里

java.sql.SQLException: Io 异常: Connection reset
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
at oracle.jdbc.driver.T4CConnection.logoff(T4CConnection.java:481)
at oracle.jdbc.driver.PhysicalConnection.close(PhysicalConnection.java:1228)
at com.alibaba.druid.filter.FilterChainImpl.connection_close(FilterChainImpl.java:167)
at com.alibaba.druid.filter.stat.StatFilter.connection_close(StatFilter.java:254)
at com.alibaba.druid.filter.FilterChainImpl.connection_close(FilterChainImpl.java:163)
at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.close(ConnectionProxyImpl.java:115)
at com.alibaba.druid.util.JdbcUtils.close(JdbcUtils.java:79)
at com.alibaba.druid.pool.DruidDataSource.shrink(DruidDataSource.java:1876)
at com.alibaba.druid.pool.DruidDataSource$DestroyConnectionThread.run(DruidDataSource.java:1694)

数据库还可以正常使用...不知道是怎么造成的.