what is the best way to get the schema growth in Oracle? I tried using many of the dba_hist_ tables and none of them seem to get me the size and growth of the schema for a specific time (7day) period. These tables seem to hold tablespace growth information, not @ the schema level.
Can somebody help?
Tried the following tables,
dba_hist_tablespace_stat, dba_hist_seg_stat, dba_hist_seg_stat_obj, dba_hist_snapshot etc.
Check this query:
SELECT b.tsname tablspc_name ,
MAX(b.used_size_mb) cur_used_size_mb ,
ROUND(AVG(inc_used_size_mb),2) avg_incr_mb
FROM
(SELECT a.days,
a.tsname ,
used_size_mb ,
used_size_mb - LAG (used_size_mb,1) OVER ( PARTITION BY a.tsname ORDER BY a.tsname,a.days) inc_used_size_mb
FROM
(SELECT TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY') days ,
ts.tsname ,
MAX(ROUND((tsu.tablespace_usedsize* dt.block_size )/(1024*1024),2)) used_size_mb
FROM dba_hist_tbspc_space_usage tsu ,
dba_hist_tablespace_stat ts ,
dba_hist_snapshot sp,
dba_tablespaces dt
WHERE tsu.tablespace_id = ts.ts#
AND tsu.snap_id = sp.snap_id
AND ts.tsname = dt.tablespace_name
AND sp.begin_interval_time > sysdate-7
GROUP BY TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY'),
ts.tsname
ORDER BY ts.tsname,
days
) a
) b
GROUP BY b.tsname
ORDER BY b.tsname;
And group by owner:
SELECT ds.owner as owner,
MAX(b.used_size_mb) cur_used_size_mb ,
ROUND(AVG(inc_used_size_mb),2) avg_incr_mb
FROM
(SELECT a.days,
a.tsname ,
used_size_mb ,
used_size_mb - LAG (used_size_mb,1) OVER ( PARTITION BY a.tsname ORDER BY a.tsname,a.days) inc_used_size_mb
FROM
(SELECT TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY') days ,
ts.tsname ,
MAX(ROUND((tsu.tablespace_usedsize* dt.block_size )/(1024*1024),2)) used_size_mb
FROM dba_hist_tbspc_space_usage tsu ,
dba_hist_tablespace_stat ts ,
dba_hist_snapshot sp,
dba_tablespaces dt
WHERE tsu.tablespace_id = ts.ts#
AND tsu.snap_id = sp.snap_id
AND ts.tsname = dt.tablespace_name
AND sp.begin_interval_time > sysdate-7
GROUP BY TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY'),
ts.tsname
ORDER BY ts.tsname,
days
) a
) b
JOIN dba_segments ds on ds.tablespace_name = b.tsname
GROUP BY ds.owner
ORDER BY ds.owner;
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