用它的所有回滚段重新创建回滚表空间。
Recreate the rollback tablespace with all of its rollback segments.
从属于传统回滚段表空间的数据文件的丢失中恢复。
Recovering from the loss of a data file that belongs to a traditional rollback segment tablespace.
数据库没有彻底关闭(在回滚段中有活动的事务)。
The database was not cleanly shut down (there are active transactions in the rollback segments).
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