Oracle 视图 ALL_HEAT_MAP_SEGMENT 官方解释,作用,如何使用详细说明
本站中文解释
_ATTRIB
ALL_HEAT_MAP_SEGMENT_ATTRIB是Oracle视图的一种,它存储用户可以对热力图进行细分的属性信息,其中包括该细分的名称、宽度(单位面积)、起始维度和高度(比率-存储介于0-1之间的数字)以及类别。
这个视图可以用来获取特定热力图细分的详细信息,包括细分名称、宽度、起始维度和高度,以及它们所属的分类。另外,这些信息可以用来对用户可以对热力图进行准确的细分。
使用这个视图的主要方法是使用SELECT语句,以获取特定的热力图细分的属性信息。例如,可以使用SELECT语句获取指定热力图的所有细分属性信息:
SELECT * FROM ALL_HEAT_MAP_SEGMENT_ATTRIB WHERE HEAT_MAP_ID = ‘my_heat_map’;
官方英文解释
ALL_HEAT_MAP_SEGMENT
displays the latest segment access time for all segments visible to the user. The timestamps in the view are coarse with a granularity of a day reflecting the flush times of the heat map.
Related Views
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DBA_HEAT_MAP_SEGMENT
displays the latest segment access time for all segments. -
USER_HEAT_MAP_SEGMENT
displays the latest segment access time for all segments owned by the user. This view does not display theOWNER
column.
Column | Datatype | NULL | Description |
---|---|---|---|
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Table owner |
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Name of the object |
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|
Name of the sub-object |
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Latest timestamp on which the segment has write access |
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Latest timestamp on which the segment has read access |
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Latest timestamp on which the segment has full table scan |
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Latest timestamp on which the segment has index scan |
See Also:
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“DBA_HEAT_MAP_SEGMENT”
-
“USER_HEAT_MAP_SEGMENT”