증가량까지 볼수 있는 방법은 없습니다.  아래의 sql에 맞는 테이블을 만든후 일배치로 insert하는 방법을 사용해보세요.
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DB=DBNAME

db2 connect to $DB

db2 " SELECT tablespace,state,type,page_size, total_size_mb, used_size_mb,free_size_mb, ratio, \
       case when ratio > 80 and TYPE <> 'SMS' then 'CHECK' else '' end \
FROM ( \
SELECT SUBSTR(tbs_cfg.tablespace_name,1,20) tablespace \
,CAST(tbs_cfg.tablespace_state as smallint) AS state \
,CASE tbs_cfg.tablespace_type \
WHEN 1 THEN 'SMS' \
ELSE 'DMS' \
END AS type \
,CAST(page_size as integer) page_size \
,(total_pages * page_size) / 1024 / 1024 as total_size_mb \
,(used_pages * page_size) / 1024 / 1024 as used_size_mb \
,(free_pages * page_size) / 1024 / 1024 as free_size_mb \
,CASE tablespace_type \
WHEN 1 THEN 100 \
ELSE dec((tbs_cfg.used_pages * 100.00)/tbs_cfg.total_pages, 5,2) \
END AS ratio \
FROM TABLE(snapshot_tbs_cfg('$DB',0)) AS tbs_cfg \
ORDER BY 5 desc \
) TBS" |tee -a TBS.out
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