repeatable read

These next key locks are only obtained when the key INSERT finds that a scanner with a Repeatable Read ( RR) isolation level has a row lock on the next-higher key in the index.

这些next key锁只有在key INSERT发现带有Repeatable Read（RR）隔离级别的扫描器在索引中的next-higher键上有一个行锁时才能获得。

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Using the Repeatable Read isolation level may result in an automatic table lock in some cases.

使用可重复读隔离级别在某些情况下可能会导致自动执行表锁定。

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This leaves you a choice between read committed and repeatable read.

剩下的也就是在“授权读取”和“可重复读取”之间选择了.

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Let's first consider repeatable read.

我们先考虑可重复读取.

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This is an important issue, but using repeatable read isn't the only way to resolve it.

这是一个非常重要的问题, 但是使用可重复读取并不是解决问题的唯一途径.

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However, for entity beans this rule has to be relaxed; due to the nature of the model, most pessimistic locking access intents require at least Repeatable Read.

但是，对于实体Bean则可不遵循此规则，由于该模型本身的特性，多数悲观锁定访问都需要至少Repeatable Read。

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Repeatable read-Permits neither unrepeatable reads nor dirty reads . Phantom reads may occur.

可重复读取-禁止不可重复读取和脏读取,但是有时可能出现幻影数据.

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Known as Repeatable Read in DB2, this is the strongest isolation level.

在DB2中称为Repeatable Read，是最强的隔离级别。

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