标题: ORA-15166: cluster in rolling downgrade from [打印本页] 作者: admin 时间: 2016-8-22 09:58 标题: ORA-15166: cluster in rolling downgrade from ORA-15166: cluster inrolling downgrade from version [string] to [string] Cause: The current software version of the instance wasincompatible with the
rolling downgrade operation of the cluster. Action: Theversion number of new member instance must be one of the two
versions involved in the rolling downgrade.