High speed, non-log based database recovery technique

摘要: A technique for recoving a database having intrinsic versioning and no logging mechanism is described. The process allows the information storage retrieval system to recover from crashes in very short times irrespective of size complexity data objects contained database. recovery does not require an update or transaction log, consequently all delays associated with keeping such write time log truncation during are avoided. most recent stable object table identified non-persistent memory area. An allocation map then used identify unstable scanned build post-recovery table. By performing this scan before crash failure, can be performed without persistent areas system. In addition, conventional transactional file need maintained recover.