Two methods for managing undo data exists
-Automatic Undo Management(The recommended method from 9i)
-Manual Undo Management(The only method available prior to Oracle9i) More…
1.Type of segments
Segments are space-occupying objects in a database.
Table
The most common means of storing data within a database.
Data within a table segment is stored in on particular order,and the DBA has little control
over the location of rows within the blocks in a table. More…
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Two methods for managing undo data exists
-Automatic Undo Management(The recommended method from 9i)
-Manual Undo Management(The only method available prior to Oracle9i)
More…
Popularity: 26% [?]
1.Type of segments
Segments are space-occupying objects in a database.
Table
The most common means of storing data within a database.
Data within a table segment is stored in on particular order,and the DBA has little control
over the location of rows within the blocks in a table.
More…
Popularity: 27% [?]
这几天心情非常不好,有时候我在怀疑,我这样固执的选择是不是真的错了?或者生活就是这样,人和人之间就是这样.什么诺言,什么保证,什么真心,可能都只是随便说说罢了.有人让我天天看博客,我看了,可是说的人还不知道看了没有呢.天真……无聊……
Popularity: 24% [?]