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.
如果您所在的公司可能丢失灾难恢复所需的归档日志，那么使用渐进和增量映像将给您提供多一份保障。
If you work in the type of company that can lose archived logs required for disaster recovery, the presence of incremental and delta images gives you more things to misplace.
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.
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