Concurrency control and recovery in database systems
Concurrency control and recovery in database systems
Concurrency control performance modeling: alternatives and implications
ACM Transactions on Database Systems (TODS)
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
ACM Transactions on Database Systems (TODS)
A critique of ANSI SQL isolation levels
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Read-only transactions in a distributed database
ACM Transactions on Database Systems (TODS)
The notions of consistency and predicate locks in a database system
Communications of the ACM
A dual copy method for transaction separation with multiversion control for read-only transactions
Proceedings of the 2001 ACM symposium on Applied computing
Transaction Processing: Concepts and Techniques
Transaction Processing: Concepts and Techniques
Evaluation of concurrency control strategies for mixed soft real-time database systems
Information Systems - Databases: Creation, management and utilization
The Performance of Protocols Based on Locks with Ordered Sharing
IEEE Transactions on Knowledge and Data Engineering
Efficient Execution of Read-Only Transactions in Replicated Multiversion Databases
IEEE Transactions on Knowledge and Data Engineering
Value-cognizant Speculative Concurrency Control
VLDB '95 Proceedings of the 21th International Conference on Very Large Data Bases
Using Separate Algorithms to Process Read-Only Transactions in Real-Time Systems
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
Generalized Isolation Level Definitions
ICDE '00 Proceedings of the 16th International Conference on Data Engineering
Mobile Networks and Applications
Speculative Locking Protocols to Improve Performance for Distributed Database Systems
IEEE Transactions on Knowledge and Data Engineering
Relaxed currency and consistency: how to say "good enough" in SQL
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Making snapshot isolation serializable
ACM Transactions on Database Systems (TODS)
Automating the detection of snapshot isolation anomalies
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
Improving the performance of read-only transactions through asynchronous speculation
Proceedings of the 2008 Spring simulation multiconference
Improving the performance of read-only transactions through speculation
DNIS'07 Proceedings of the 5th international conference on Databases in networked information systems
SpringSim '10 Proceedings of the 2010 Spring Simulation Multiconference
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A read-only transaction (ROT) does not modify any data. The main issues regarding processing of ROTs are correctness, data currency and performance. Even though the popular two-phase locking (2PL) protocol processes the ROTs correctly with no correctness related issues, its performance deteriorates as data contention increases. Snapshot isolation (SI)-based protocols have been proposed in the literature to improve the performance. However, the SI-based protocols compromise both correctness and data currency aspects. In the literature, speculative locking (SL) approach has been proposed to improve the transaction performance in online transaction processing environments. In this paper, we have proposed efficient speculation-based protocols to improve the performance of ROTs by exploiting features specific to ROT environment. The performance results show that the proposed protocols improve the performance of ROTs over 2PL and SI-based protocols with manageable extra processing resources. Further, the proposed protocols process transactions without any correctness and data currency related issues.