Identifying the problematic situations is the first step to resolving them.
正确认识问题是解决问题的第一步。
Warnings about problematic situations that do not, in themselves, create serious problems with the system.
是关于问题状况的警告，一般这些状况不会引起系统的严重问题。
As will be discussed later, pessimistic session locking has several problematic situations that need to be addressed, such as the cleaning up of abandoned locks.
在使用悲观会话锁定中需要注意一些问题，例如清理废弃的锁等，这将在稍后进行介绍。
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