Oracle Tablespace Free Space Report

-- -----------------------------------------------------------------------------------
-- File Name    : https://oracle-base.com/dba/monitoring/ts_free_space.sql
-- Author       : Tim Hall
-- Description  : Displays a list of tablespaces and their used/full status.
-- Requirements : Access to the DBA views.
-- Call Syntax  : @ts_free_space.sql
-- Last Modified: 13-OCT-2012 - Created. Based on ts_full.sql
--                22-SEP-2017 - LINESIZE set.
-- -----------------------------------------------------------------------------------
SET PAGESIZE 140 LINESIZE 200
COLUMN used_pct FORMAT A11

SELECT tablespace_name,
       size_mb,
       free_mb,
       max_size_mb,
       max_free_mb,
       TRUNC((max_free_mb/max_size_mb) * 100) AS free_pct,
       RPAD(' '|| RPAD('X',ROUND((max_size_mb-max_free_mb)/max_size_mb*10,0), 'X'),11,'-') AS used_pct
FROM   (
        SELECT a.tablespace_name,
               b.size_mb,
               a.free_mb,
               b.max_size_mb,
               a.free_mb + (b.max_size_mb - b.size_mb) AS max_free_mb
        FROM   (SELECT tablespace_name,
                       TRUNC(SUM(bytes)/1024/1024) AS free_mb
                FROM   dba_free_space
                GROUP BY tablespace_name) a,
               (SELECT tablespace_name,
                       TRUNC(SUM(bytes)/1024/1024) AS size_mb,
                       TRUNC(SUM(GREATEST(bytes,maxbytes))/1024/1024) AS max_size_mb
                FROM   dba_data_files
                GROUP BY tablespace_name) b
        WHERE  a.tablespace_name = b.tablespace_name
       )
ORDER BY tablespace_name;

SET PAGESIZE 14