数据中心ERROR：SQLException: I/O Error: DB server closed connection

1 问题描述

    控制台数据中心error，导致应用服务器不能正常做业务。

2 解决方法

   1) 查看控制台日志：eas/admin/logs/admin.log

com.kingdee.eas.tools.admin.framework.database.exception.DBException: Get database connection failed!

cause by java.sql.SQLException: I/O Error: DB server closed connection.

   2)进一步查看sqlserver数据库日志；如果是Oracle就查看警告日志或者监听日志

    消息 Encryption is required to connect to this server but the client library does not support encryption; the connection has been closed. Please upgrade your client li