2026-03-12 20:23:15

vdh/list_top_segments_growth.sql

@@ -0,0 +1,60 @@
+-- list the top 10 segments based on growth in a given tablespace
+-- provide the tablespace name as script argument
+--
+-- requires the diagnostic pack 
+
+set linesize 200
+set pages 50000
+
+column min_snap_time format a30
+column max_snap_time format a30
+column object_name format a30
+column subobject_name format a30
+column owner format a30
+column object_type format a20
+column total_allocated_delta_mb format 9G999G999
+
+
+select
+  *
+from
+  ( select
+      min(snap.begin_interval_time) min_snap_time,
+      max(snap.end_interval_time) max_snap_time,
+      obj.owner,
+      obj.object_name,
+      obj.subobject_name,
+      obj.object_type,
+      sum(hseg.space_allocated_delta)/1024/1024 total_allocated_delta_mb
+    from
+      dba_hist_seg_stat hseg
+        join dba_hist_seg_stat_obj obj
+          on ( hseg.dbid = obj.dbid
+               and hseg.obj# = obj.obj#
+               and hseg.ts# = obj.ts#
+             )
+        join dba_hist_snapshot snap
+          on ( hseg.snap_id = snap.snap_id
+               and hseg.instance_number = snap.instance_number
+               and hseg.dbid = snap.dbid
+             )
+        join v$database db
+          on ( hseg.dbid = db.dbid )
+    where
+      -- use this contruct to push the tablespace predicate further down
+      -- using a filter on dba_hist_seg_stat_obj itself would only filter on tablespace name as one of the latest steps
+      hseg.ts# = (select distinct ts# from dba_hist_seg_stat_obj where tablespace_name = '&1')
+      and hseg.instance_number = 1
+    group by
+      obj.owner,
+      obj.object_name,
+      obj.subobject_name,
+      obj.object_type
+    order by
+      total_allocated_delta_mb desc
+  )
+where
+  rownum <= 10
+;
+
+undef 1