提供的口令不正确可能造成 DB2 UDB 启动过程中不能加载某些服务，有可能禁止执行特定的操作。

Supplying an incorrect password will cause a service to fail to load during DB2 UDB start-up, and potentially prevent you from performing certain operations.

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比如，在Linux和UNIX操作系统上，未定义口令被作为NULL处理。

For example, on Linux and UNIX operating systems, undefined passwords are treated as NULL.

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默认情况下，Cloudscape建立连接不需要userID和口令，因为它依靠操作系统身份验证。

By default, Cloudscape does not require a userID and password to establish a connection, as it relies on operating system authentication.

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