As physical database locks are held for a longer time duration than with an optimistic locking strategy, there is more of a chance for performance and throughput being impacted.

同乐观锁定策略相比，物理数据库锁需要持续较长的时间，因此应用程序性能和吞吐量很可能会受到影响。

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Pessimistic session locking should be used with great discretion, as it serializes access to data across a business process that includes user think time.

必须谨慎使用悲观会话锁定，因为它在业务流程（包括用户思考时间）中序列化数据访问。

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Optimistic locking in DB2 9.5 improves scalability by minimizing the time for which a given resource is unavailable for use by other transactions.

DB2 V9.5 的乐观锁定特性最小化了给定资源对于其他事务的不可用时间，进一步改善了可伸缩性。

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Its adaptive air suspension, full-time all-wheel drive, locking differentials and extra-low range all combine to make the Range Rover capable of going just about anywhere you'd think to try and drive, and to conquer some slopes you couldn't ascend without a climbing rope.

FORBES: Vehicles Feature

And it is pushing for laws requiring all first-time offenders to have ignition locking devices that prevent cars from starting until breath samples are analyzed.

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This was, he argued, the first time Taft-Hartley had been used when management was locking out workers from the ports.

ECONOMIST: The president and the dockers