2026-03-12 20:23:15

vdh/list_fragmentation.sql

@@ -0,0 +1,36 @@
+/*  
+   gives the total_amount of mb free space and the 10 biggest extents
+   per tablespace of type PERMANENT (with the number of times this extent size extists)
+
+   This query can be used to verify the fragmentation of a tablespace
+*/
+
+set linesize 120
+set pagesize 9999
+column tablespace_name format a30
+column total_free_mb format 9G999G990D999
+column extent_mb format 9G999G990D999
+column counted format 9G999G990
+break on tablespace_name skip 1 on total_free_mb
+
+select A.tablespace_name, total_free/1024/1024 total_free_mb, bytes/1024/1024 extent_MB, 
+       counted
+from ( select tablespace_name, bytes, counted,
+              row_number()
+                over ( partition by tablespace_name
+                       order by bytes desc
+                     ) rn
+       from ( select A.tablespace_name, A.bytes , count(*) counted
+              from dba_free_space A, dba_tablespaces B
+              where A.tablespace_name = B.tablespace_name
+                    and B.contents = 'PERMANENT'
+              group by A.tablespace_name, bytes
+            )
+     ) A, 
+     ( select tablespace_name, sum(bytes) total_free
+       from dba_free_space
+       group by tablespace_name
+     ) B
+where A.tablespace_name = B.tablespace_name
+      and A.rn <= 10
+order by tablespace_name, rn;