Hi we have a Tablepace whihc has a freesapce of 827.921875 mb
one of its segments shows

ORA-01653: unable to extend table

Its nextextent is 170.859375 mb and the initial is 331.71875 mb. It has only one extent .

Even if we coalsece the tablespace it does not effect the dba_free_space.

Oracle verison is 8.1.6 and dictionary managed tableapsce

Please Advice