Explain why the following technique for transaction execution may providebetter performance than just using strict two-phase locking: First execute thetransaction without acquiring any locks and without performing any writesto the database as in the validation-based techniques, but unlike the validationtechniques do not perform either validation or writes on the database. Instead,rerun the transaction using strict two-phase locking. (Hint: Consider waits fordisk I/O.)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Explain why the following technique for transaction execution may provide
better performance than just using strict two-phase locking: First execute the
transaction without acquiring any locks and without performing any writes
to the database as in the validation-based techniques, but unlike the validation
techniques do not perform either validation or writes on the database. Instead,
rerun the transaction using strict two-phase locking. (Hint: Consider waits for
disk I/O.)
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