这个参数指出，在完成一个防护模式例程调用之后，是否保留防护模式进程（db2fmp）。

This parameter indicates whether or not a fenced mode process (db2fmp) is kept after a fenced mode routine call is complete.

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防护模式进程是作为单独的系统实体创建的，以便将用户编写的防护模式代码与数据库管理器代理进程隔离开来。

Fenced mode processes are created as separate system entities in order to isolate user-written fenced-mode code from the database manager agent process.

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数据库设计的经验表明，模式作为避免编程错误的防护措施很有用。

Experience with database design shows that schemas are most useful as a safeguard against programming errors.

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