每个时间段内数据库对象的增长量

select c.SNAP_ID,
to_char(c.END_INTERVAL_TIME, ‘yyyy-mm-dd’) SNAP_TIME,
a.OWNER,
a.OBJECT_NAME,
a.OBJECT_TYPE,
b.DB_BLOCK_CHANGES_DELTA
from dba_objects a,
(select SNAP_ID, obj#, DB_BLOCK_CHANGES_DELTA
from DBA_HIST_SEG_STAT
where DB_BLOCK_CHANGES_DELTA > 20000
order by snap_id desc, DB_BLOCK_CHANGES_DELTA desc) b,
DBA_HIST_SNAPSHOT c
where a.object_id = b.obj#
and object_type = ‘TABLE’
and b.SNAP_ID = c.SNAP_ID
order by DB_BLOCK_CHANGES_DELTA;

某个时间段内，数据库对象的变化大小

select a.OBJECT_NAME,
to_char(c.END_INTERVAL_TIME, ‘yyyy-mm-dd’) SNAP_TIME,
sum(b.DB_BLOCK_CHANGES_DELTA) / 1024 / 1024 GB
from dba_objects a,
(select
SNAP_ID, obj#, DB_BLOCK_CHANGES_DELTA
from DBA_HIST_SEG_STAT
where DB_BLOCK_CHANGES_DELTA > 20000
order by snap_id desc, DB_BLOCK_CHANGES_DELTA desc) b,
DBA_HIST_SNAPSHOT c
where a.object_id = b.obj#
and object_type = ‘TABLE’
and b.SNAP_ID = c.SNAP_ID
group by a.OBJECT_NAME, c.END_INTERVAL_TIME
order by GB;