2026-03-12 20:23:15

vdh/segments_near_hwm.sql

@@ -0,0 +1,31 @@
+set linesize 150
+
+column owner format a20
+column file_name format a60
+column file_id format 999 heading ID
+column high_water_mark format 99G999D99 heading HWM
+column segment_type format a15
+
+break on file_id skip 1 on file_name
+
+with
+maxext as
+( select /*+ MATERIALIZE */
+         file_id, owner, block_id, blocks, segment_name, segment_type, ranking
+  from ( select file_id, owner, block_id, blocks, segment_name, segment_type,
+                rank() over
+                    ( partition by file_id 
+                      order by (block_id + blocks -1) desc
+                    ) ranking
+         from dba_extents
+         where tablespace_name = '&tablespace'
+       )
+  where ranking <= 5
+)
+select df.file_name, maxext.file_id, maxext.owner, maxext.segment_name, maxext.segment_type, 
+       ((maxext.block_id + maxext.blocks - 1) * 8192 / 1024/1024) high_water_mark
+from maxext, dba_data_files df
+where df.file_id = maxext.file_id
+order by maxext.file_id, ranking;
+ 
+