介绍如何对运行于Oracle9 i关系数据库的ArcSDE数据进行备份与恢复,防止存储介质的 意外损坏导致严重的空间数据损失,防止由于用户误操作引起的数据丢失。-How right Oracle9 i relational database running on the ArcSDE data backup and recovery, to prevent accidental damage to storage media lead to serious loss of spatial