标题: ORA-15168: rolling downgrade prevented by [打印本页] 作者: admin 时间: 2016-8-22 09:58 标题: ORA-15168: rolling downgrade prevented by ORA-15168: rollingdowngrade prevented by string Cause: Oneor more instances were blocking the rolling downgrade. Action: Terminateor wait until the reported operation is complete before
attempting the rolling downgrade to the cluster.