The default log level should be WARN which will write a message to the log file only if a request has been blocked.

默认的日志记录级别应该是WARN，它只在已经阻止了请求的情况下在日志文件中写消息。

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If the user credentials are not provided while connecting, DB2 implicitly USES the user id and password that were used to log in to the workstation where the request originated.

在连接时如果没有提供用户凭证，DB2将使用用来登录到发出请求的工作站的用户ID和密码。

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Figure 6 shows a sample request message flow log in the Database Explorer for V6.

图6显示了V6的Database Explorer中的示例请求消息流日志。

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