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» A Read-Only Transaction Anomaly Under Snapshot Isolation
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SIGMOD
2004
ACM
103views Database» more  SIGMOD 2004»
14 years 11 months ago
A Read-Only Transaction Anomaly Under Snapshot Isolation
Snapshot Isolation (SI), is a multi-version concurrency control algorithm introduced in [BBGMOO95] and later implemented by Oracle. SI avoids many concurrency errors, and it never ...
Alan Fekete, Elizabeth J. O'Neil, Patrick E. O'Nei...
DNIS
2007
Springer
114views Database» more  DNIS 2007»
14 years 5 months ago
Improving the Performance of Read-Only Transactions Through Speculation
A read-only transaction (ROT) does not modify any data. The main issues regarding processing ROTs are correctness, data currency and performance. Two-phase Locking (2PL) protocol i...
Thirumalaisamy Ragunathan, P. Krishna Reddy
VLDB
2007
ACM
128views Database» more  VLDB 2007»
14 years 11 months ago
Automating the Detection of Snapshot Isolation Anomalies
Snapshot isolation (SI) provides significantly improved concurrency over 2PL, allowing reads to be non-blocking. Unfortunately, it can also lead to non-serializable executions in ...
Sudhir Jorwekar, Alan Fekete, Krithi Ramamritham, ...
SRDS
2005
IEEE
14 years 4 months ago
Database Replication Using Generalized Snapshot Isolation
Generalized snapshot isolation extends snapshot isolation as used in Oracle and other databases in a manner suitable for replicated databases. While (conventional) snapshot isolat...
Sameh Elnikety, Willy Zwaenepoel, Fernando Pedone
FMLDO
1999
Springer
137views Database» more  FMLDO 1999»
14 years 3 months ago
Federated Transaction Management with Snapshot Isolation
Federated transaction management (also known as multidatabase transaction management in the literature) is needed to ensure the consistency of data that is distributed across mult...
Ralf Schenkel, Gerhard Weikum, Norbert Weiße...