这个感叹号是换码符，允许您从交互输入模式或批处理模式发出操作系统命令。

The exclamation mark is an escape character that lets you issue operating system commands from either interactive input mode or batch mode.

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图11显示的是将语句结束符设置为感叹号(！)但未修改现有语句结束符之后所出现的语法验证错误。

Figure 11 shows an example of the syntax validation error that occurs after you set the statement terminator to an exclamation point (!), and do not update an existing statement terminator.

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您可能还注意到db2start命令前的感叹号，这说明该命令不是CLP命令，而是从操作系统提示符发出的系统命令。

You might have also noticed the exclamation mark in front of the db2start command, which is not a CLP command, but a system command that you issue from an operating system prompt.

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