没有归档、备份、恢复或灾难恢复的过程和机制。
No procedures or mechanisms for archiving, backup, restore, or disaster recovery exist.
要了解DB 2 UD b联机备份和恢复，就需要了解归档日志记录。
To understand the DB2 UDB online backup and recovery, you need to understand archive logging. There are three definitions of logs that we need to familiar with.
如果您选择使用归档日志记录，并执行联机备份和前滚恢复，那么您可以恢复到数据丢失最少的那个时间点，或者恢复到结束日志的时候。
If you choose to have archive logging, and do an online backup and roll forward recovery, you can recover to a point in time or to the end of the logs for the minimum loss of data.
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