-Recorded in the segment header block
-Set to the beginning of the segment on the creation
-Incremented in five-block increments as rows are inserted
-Reset by the truncate command
-Never reset by the delete command
-Space above the high-water-mark can be reclaimed at the table level by using the following command:
ALTER TABLE DEALLOCATE UNUSED…[@more@]
-Set to the beginning of the segment on the creation
-Incremented in five-block increments as rows are inserted
-Reset by the truncate command
-Never reset by the delete command
-Space above the high-water-mark can be reclaimed at the table level by using the following command:
ALTER TABLE DEALLOCATE UNUSED…[@more@]
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/178357/viewspace-926970/ ，如需转载，请注明出处，否则将追究法律责任。
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