Rollback Segments Errors

Why cant I change the minextents?

SVRMGR> alter rollback segment r05

     2> storage (minextents 10);
alter rollback segment r05
*
ORA-01570: MINEXTENTS must be no larger than the 4 extents currently allocated

SVRMGR> select
segment_name,tablespace_name,INITIAL_EXTENT,MIN_EXTENTS,MAX_EXTENTS

     2> from dba_rollback_segs
     3> where segment_name='R05';
SEGMENT_NAME    TABLESPACE_NAME     INITIAL_EX  MIN_EXTENT MAX_EXTENT
------------------------------ ------------------------------ ----------
---------- ----------
R05                            RBS                               1048576
3                1000

Thanks in advance. Received on Thu Nov 09 2000 - 11:21:15 CST