启动一个对锁请求进行处理的子线程。

Start a child thread that evaluates the lock request.

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在子线程中，打开新的DB 2连接，在锁表中获取具有所请求的资源ID的一行。

Within the child thread, open a new connection to DB2 and fetch a row from the lock table for the requested resource ID.

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一些理论考证说，曾经穿在骑士身上的锁子甲之所以叫做mail(铠甲)，和它是被敲打而成有关。

Some theories on why the chain armor that knights used to wear was called mail include the idea that it was hammered together.

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