SELECT 
	 OWNER,SEGMENT_NAME,
	 SEGMENT_TYPE,
	 TABLESPACE_NAME,
	 BYTES/1024/1024,
	 NEXT_EXTENT/1024/1024,
	 EXTENTS,
	 MAX_EXTENTS
 FROM 
	dba_segments
 WHERE 
	SEGMENT_NAME='EDI40';

 
 ALTER TABLE SAPR3.EDI40 storage (maxextents 600);