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Thread: rollbacks highwater mark

  1. 02-08-2001, 04:39 PM #1
    mybear
    mybear is offline Junior Member
    Join Date
    Jan 2001
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    When using OEM storage manager, what does HIGH WATER MARK stand for when looking at the rollback segments?
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  2. 02-08-2001, 05:01 PM #2
    jdorlon
    jdorlon is offline Senior Member
    Join Date
    Nov 2000
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    344
    it means the same for rollback segments as it does for tables. It represents the maximum amout that the segment has been filled. It may or may not currently be filled that much.

    Think of the tide at a beach. When the tide rolls up, it leaves a mark in the sand, then it rolls back down. Even though the water is not up that high anymore, you can see where it was by the way the sand looks. This is a 'high water mark'. It is the same idea with tables and rollback segments.
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