Check Table size
select
char(date(t.stats_time))||' '||char(time(t.stats_time)) as statstime
,substr(t.tabschema,1,8)||'.'||substr(t.tabname,1,24) as tabname
,card as rows_per_table
,decimal(float(t.npages)/ ( 1024 / (b.pagesize/1024)),9,2) as used_mb
,decimal(float(t.fpages)/ ( 1024 / (b.pagesize/1024)),9,2) as allocated_mb
from
syscat.tables t , syscat.tablespaces b
where t.tbspace=b.tbspace
order by 5 desc with ur;