Free space can be managed automatically or manually. The in-segment
free/used space is tracked using bitmaps, as opposed to free lists.
segment-space management offers the following benefits:
■ Ease of use
■ Better space utilization, especially for the objects with highly varying row sizes
■ Better run-time adjustment to variations in concurrent access
■ Better multi-instance behavior in terms of performance/space utilization
[@more@]来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/10599713/viewspace-931372/ ，如需转载，请注明出处，否则将追究法律责任。
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