在 DBX_PLUGIN_PATH 环境变量中设置以冒号分隔的目录列表，在 dbx 会话启动时 dbx 会在所有这些目录中搜索插件。
The list of directories, separated by colons, set in the DBX_PLUGIN_PATH environment variable enables dbx to search for the plug-ins in all these paths, at the start of the dbx session.
然而，这个注册表变量只能在实例启动时生效，所以，如果您想修改DB2在mdc表上的删除操作方面的行为，必须重新启动实例。
However, this registry variable can only take effect on instance startup, so if you want to alter the behavior of DB2 with respect to deletions on MDC tables, you have to restart the instance.
本文阐述了如何初始化会话范围变量，使之显示出与应用程序启动时Combo Box控件的初始值相对应的数据。
It explains how to initialize the session scope variable to display the data corresponding to the initial value of the Combo Box control at application startup.
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