Definition
The transaction manager (TxM) is a special resource manager that implements the resource-type “transaction.” It handles all the state transitions that a transaction can perform. For simple ACID transactions, these are begin, savepoint, rollback, abort, and prepare commit; for more refined transaction models, there will be additional states. The resource managers register with the TxM when they get employed by a transaction for the first time. Thus, the TxM keeps a record for each transaction of which resource managers have been involved with it. In the same vein, it stores which sessions each transaction has used in case it has performed operations on other nodes in a distributed system. The TxM closely interacts with the concurrency control manager who can make transaction wait for other transactions in case of access conflicts. It also interacts with the logging and recovery subsystem and the communications manager.
Key Points
The TxM keeps track of all active...
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsRecommended Reading
Gray J, Reuter A. Transaction processing – concepts and techniques. San Mateo: Morgan Kaufmann; 1993.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Section Editor information
Rights and permissions
Copyright information
© 2018 Springer Science+Business Media, LLC, part of Springer Nature
About this entry
Cite this entry
Reuter, A. (2018). Transaction Manager. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_679
Download citation
DOI: https://doi.org/10.1007/978-1-4614-8265-9_679
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-8266-6
Online ISBN: 978-1-4614-8265-9
eBook Packages: Computer ScienceReference Module Computer Science and Engineering