10g dba_segments_old?

OTN has the exact same spec as for DBA_SEGMENTS?

http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_4098.htm The only different I see is that dba_Segments_old tracks the increases in bytes used by segments that we had before we upgraded to 10g. The regular DBA_SEGMENTS view has not increased the number of bytes used by those segments. It only increments when we create a segment(table, etc...). any idea why oracle did this?

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