有关数据库的一小段话 谁能帮我翻译一下 急用 谢谢
来源:百度知道 编辑:UC知道 时间:2024/06/23 13:17:00
2 oracle例程:Oracle 例程由SGA 内存结构和用于管理数据库的后台进程组成。例程一次只能打开和使用一个数据库。
3、SCN(System Change Number):系统改变号,一个由系统内部维护的序列号。当系统需要更新的时候自动增加,他是系统中维持数据的一致性和顺序恢复的重要标志。
1, background processes (data writing process, log writing process, system monitoring, process monitoring, inspection point process, archive, process, process service, users process) data writing process: will be responsible for changes to the data from the database into the buffer cache writing process log data files: redo log changes in the buffer zone into the online redo log files System Monitoring: Check the consistency of the database if necessary, will be activated in the database open database recovery process control: responsible for an Oracle failure of the process when the process of cleaning up checkpoints resources: the buffer zone in the cache whenever changes in the permanent record in the database, document control and update data files in the database state information. Archiving process: each log switching to the full group log backup or archiving services for the process: the process of user services. Users process: on the client side, users will be responsible fo