I've just got to administer this Oracle 7.3.4 database. I found that the Max extent for most of the tables is huge, it's 2,147,483,645
The question here is, would that affect the performance or would it have any affect on the database in anyway ?
Basically, that number signifies that the segment has maxextents set to unlimited. In general, this is not a bad thing. See various threads on this forum detailing Fragmentation for more information...