在配置weblogic的数据源时，提示一下信息：
Home > Summary of Deployments > Summary of JDBC Data Sources:
Messages
An error occurred during activation of changes, please see the log for details.
weblogic.application.ModuleException:
weblogic.common.ResourceException: Could not create pool connection. The DBMS driver exception was: Io 异常: The Network Adapter could not establish the connection
解决：主要是我在配置数据源时没有把Oracle的服务启动造成的。