SSIS为什么升级时会生成新的包ID？
SSIS 包升级向导有一个选项可以在升级期间生成新的包 ID。有什么好处？
SSIS Package Upgrade Wizard has an option to generate a new package ID during upgrade. What is the benefit?
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当您升级包时，您会创建一个新的包 ID，以便它将成为一个新包。这样您就可以使用旧包和新包而不会发生冲突。 GUID 会将新包识别为与旧包不同的包。
包由其 ID（GUID）标识。每当写入日志文件时，包 ID 就会放入日志文件中。如果您有两个不同版本的 SSIS 包都报告相同的名称，那么您将很难找出日志文件。这就是为什么最好的做法是更改包 ID，即使您只是创建包的副本（甚至不升级它）。以下链接包含有关程序包及其 ID 的详细信息：
http://msdn。 microsoft.com/en-us/library/ms141134.aspx
You create a new package ID when you upgrade the package so that it will be a new package. That way you could use the old package and the new package without conflict. The GUID will identify the new package as a different package than the old one.
A package is identified by its ID (a GUID). Whenever a log file gets written, the package ID is put into the log file. If you had two different versions of a SSIS package both reporting the same name, you would have a hard time figuring out the log file. That is why it is best practice to change the Package ID even when you are only creating a copy of the package (not even upgrading it). Here is a link with more information about packages and their IDs:
http://msdn.microsoft.com/en-us/library/ms141134.aspx