改进了功能性恢复例程：可以从通常会导致系统崩溃的错误中恢复。

Enhanced functional recovery routine: allows for one to recover from errors that would normally crash the system.

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表明例程恢复不再需要联机重做日志组，它可能已经归档也可能未归档。

INACTIVE - Log is no longer needed for instance recovery. It may be in use for media recovery. It might or might not be archived.

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