2026-03-12 20:23:15

timhall/monitoring/df_free_space.sql

@@ -0,0 +1,30 @@
+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/monitoring/df_free_space.sql
+-- Author       : Tim Hall
+-- Description  : Displays free space information about datafiles.
+-- Requirements : Access to the V$ views.
+-- Call Syntax  : @df_free_space.sql
+-- Last Modified: 17-AUG-2005
+-- -----------------------------------------------------------------------------------
+
+SET LINESIZE 120
+COLUMN file_name FORMAT A60
+
+SELECT a.file_name,
+       ROUND(a.bytes/1024/1024) AS size_mb,
+       ROUND(a.maxbytes/1024/1024) AS maxsize_mb,
+       ROUND(b.free_bytes/1024/1024) AS free_mb,
+       ROUND((a.maxbytes-a.bytes)/1024/1024) AS growth_mb,
+       100 - ROUND(((b.free_bytes+a.growth)/a.maxbytes) * 100) AS pct_used
+FROM   (SELECT file_name,
+               file_id,
+               bytes,
+               GREATEST(bytes,maxbytes) AS maxbytes,
+               GREATEST(bytes,maxbytes)-bytes AS growth
+        FROM   dba_data_files) a,
+       (SELeCT file_id,
+               SUM(bytes) AS free_bytes
+        FROM   dba_free_space
+        GROUP BY file_id) b
+WHERE  a.file_id = b.file_id
+ORDER BY file_name;