2026-03-12 20:23:15

timhall/monitoring/table_extents.sql

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+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/monitoring/table_extents.sql
+-- Author       : Tim Hall
+-- Description  : Displays a list of tables having more than 1 extent.
+-- Requirements : Access to the DBA views.
+-- Call Syntax  : @table_extents (schema-name)
+-- Last Modified: 15/07/2000
+-- -----------------------------------------------------------------------------------
+SET LINESIZE 500
+SET PAGESIZE 1000
+SET VERIFY OFF
+
+SELECT t.table_name,
+       Count(e.segment_name) extents,
+       t.max_extents,
+       t.num_rows "ROWS",
+       Trunc(t.initial_extent/1024) "INITIAL K",
+       Trunc(t.next_extent/1024) "NEXT K"
+FROM   all_tables t,
+       dba_extents e
+WHERE  e.segment_name = t.table_name
+AND    e.owner        = t.owner
+AND    t.owner        = Upper('&&1')
+GROUP BY t.table_name,
+         t.max_extents,
+         t.num_rows,
+         t.initial_extent,
+         t.next_extent
+HAVING   Count(e.segment_name) > 1
+ORDER BY Count(e.segment_name) DESC;
+
+SET PAGESIZE 18
+SET VERIFY ON