Chapter 19. Transactions

19.1. About Transactions

A transaction consists of a collection of interdependent or related operations or tasks. All operations within a single transaction must succeed for the overall success of the transaction. If any operations within a transaction fail, the transaction as a whole fails and rolls back any changes. Transactions are particularly useful when dealing with a series of changes as part of a larger operation.

Important

With JBoss Data Grid 6.0.x, it is recommended to disable transactions in Remote Client-Server Mode. However, if an error displays warning of an ExceptionTimeout where JBoss Data Grid is Unable to acquire lock after {time} on key {key} for requester {thread}, enable transactions. This occurs because non-transactional caches acquire locks on each node they write on. Using transactions prevents deadlocks because caches acquire locks on a single node. This problem is resolved in JBoss Data Grid 6.1.
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