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What is Database Recovery (Roll-Backward, Roll-Forward)

Chapter 168
Encyclopedia of Information Science and Technology, Third Edition
Recovery is needed when a database instance that has failed is restarted or a surviving database instance takes over a failed one. In roll-backward recovery, the active transactions at the time of failure are aborted and the resourced allocated for those transactions are released. In roll-forward recovery, the updates recorded in the redo log are transferred to the database so that they are not lost.
Published in Chapter:
Database Replication and Clustering for High Availability
Wenbing Zhao (Department of Electrical and Computer Engineering, Cleveland State University, USA)
Copyright: © 2015 |Pages: 8
DOI: 10.4018/978-1-4666-5888-2.ch168
Full Text Chapter Download: US $37.50 Add to Cart
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Chapter 94
Fault Tolerant Data Management for Cloud Services
Recovery is needed when a database instance that has failed is restarted or a surviving database instance takes over a failed one. In roll-backward recovery, the active transactions at the time of failure are aborted and the resourced allocated for those transactions are released. In roll-forward recovery, the updates recorded in the redo log are transferred to the database so that they are not lost.
Published in Chapter: Fault Tolerant Data Management for Cloud Services; From: Encyclopedia of Information Science and Technology, Fourth Edition
Full Text Chapter Download: US $37.50 Add to Cart
Chapter 272
Highly Available Database Management Systems
Recovery is needed when a database instance that has failed is restarted or a surviving database instance takes over a failed one. In roll-backward recovery, the active transactions at the time of failure are aborted and the resourced allocated for those transactions are released. In roll-forward recovery, the updates recorded in the redo log are transferred to the database so that they are not lost.
Published in Chapter: Highly Available Database Management Systems; From: Encyclopedia of Information Science and Technology, Second Edition
Full Text Chapter Download: US $37.50 Add to Cart
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