如何避免数据库中的读锁定？

欢迎多个数据库的答案！

解决方法

在Oracle中,默认操作模式是Read committed isolation level,其中select语句不会被另一个修改其正在读取的数据的事务阻塞.

从
Data Concurrency and Consistency开始：

Each query executed by a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data.