始终为消息流配备异常处理机制，而不要依赖缺省代理异常处理程序。

Always have exceptional handling mechanism for the message flows rather than relying on the default broker exception handler.

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另一方面，必须显式地检查任何SQL警告，因为它们不会通过标准的异常处理机制传播。

On the other hand, you must explicitly check for any SQL warnings, because they aren't propagated via the standard exception-handling mechanisms.

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通过对存储过程异常处理机制的基本思想的讨论，给出了异常捕获和处理的具体模型。

Concrete model of exception capture and handling is proposed by discussing the basic thought of exception handling machine in stored procedure.

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