oracle并发执行

各位有没有遇到过 oracle 并发执行 for update 语句遇到阻塞问题？来源：云原生后端社区

原文链接，译文链接，译者：Greenster，校对：郑旭东在之前所有的例子中，Thread对象表示的线程和Runnable对象表示的线程所执行的任务之间是紧耦合的。这对于小型应用程序来说没问题，但对于大规模并发应用来说，合理的做法是将线程的创建...

请问 pg 有类似oracle 的parallel 提高执行sql 的并发度吗？

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