Tablespace Utilization Script in Oracle

Tablespace Utilization Script in Oracle

Tablespace Utilization Script
-----------------------------
$ sqlplus "/as sysdba"

set pages 50000 lines 32767
col tablespace_name format a30
col TABLESPACE_NAME heading "Tablespace|Name"
col Allocated_size heading "Allocated|Size(MB)" form 99999999.99
col Current_size heading "Current|Size(MB)" form 99999999.99
col Used_size heading "Used|Size(MB)" form 99999999.99
col Available_size heading "Available|Size(MB)" form 99999999.99
col Pct_used heading "%Used (vs)|(Allocated)" form 99999999.99

select a.tablespace_name
        ,a.alloc_size/1024/1024 Allocated_size
        ,a.cur_size/1024/1024 Current_Size
        ,(u.used+a.file_count*65536)/1024/1024 Used_size
        ,(a.alloc_size-(u.used+a.file_count*65536))/1024/1024 Available_size
        ,((u.used+a.file_count*65536)*100)/a.alloc_size Pct_used
from     dba_tablespaces t
        ,(select t1.tablespace_name
        ,nvl(sum(s.bytes),0) used
        from  dba_segments s
        ,dba_tablespaces t1
         where t1.tablespace_name=s.tablespace_name(+)
         group by t1.tablespace_name) u
        ,(select d.tablespace_name
        ,sum(greatest(d.bytes,nvl(d.maxbytes,0))) alloc_size
        ,sum(d.bytes) cur_size
        ,count(*) file_count
        from dba_data_files d
        group by d.tablespace_name) a
where t.tablespace_name=u.tablespace_name
and t.tablespace_name=a.tablespace_name
order by t.tablespace_name
/

Tablespace Utilization Script (Detailed)
-----------------------------
$ sqlplus "/as sysdba"

set pages 50000 lines 32767

set heading off;
set feedback off;
col tablespace_name for a30
select 'Database Name : ' || a.name , 'Host : ' || b.host_name from v$database a,gv$instance b;
select ' '  from dual;
set heading on;
set feedback on;

break on report
compute sum of "TOTAL SIZE in MB" on report
compute sum of "ALLOCATED SIZE in MB" on report
compute sum of "USED %" on report
compute sum of "FREE %" on report
compute sum of "SPACE_NEED_ON_OS_FOR_MAXSIZE" on report

select a.tablespace_name,
round(nvl(a.total,0)) "TOTAL SIZE in MB",
round(nvl(a.asize,0)) "ALLOCATED SIZE in MB",
round(nvl(a.asize-nvl(f.free,0),0)) "USED",
round(nvl(a.total-a.asize+f.free,0)) "FREE",
nvl(f.maxfree,0) "MAX_FREE",
round(((a.total-nvl(a.total-a.asize+f.free,0))/a.total)*100) "USED %",
round((nvl(a.total-a.asize+f.free,0)/a.total)*100) "FREE %",
round(a.total - a.asize) "SPACE_NEED_ON_OS_FOR_MAXSIZE"
from (select tablespace_name, sum(bytes)/1024/1024 "ASIZE",sum(case when maxbytes > bytes
then maxbytes else bytes end)/1024/1024 total from dba_data_files group by tablespace_name) a,
(select tablespace_name, round(sum(bytes/(1024*1024))) free,round(max(bytes)/1024/1024) maxfree
from dba_free_space group by tablespace_name) f
WHERE a.tablespace_name = f.tablespace_name(+)
order by round((nvl(a.total-a.asize+f.free,0)/a.total)*100)
/
Datafiles of a particular TableSpace:
------------------------------------
set pages 50000 lines 32767
col tablespace_name for a30
col file_name for a70
col CREATION_TIME for a15
select dd.tablespace_name TABLESPACE_NAME,dd.file_name,dd.bytes/1024/1024 Size_MB,dd.autoextensible,dd.maxbytes/1024/1024 MAXSIZE_MB,df.CREATION_TIME
from dba_data_files dd, v$datafile df where df.name=dd.file_name and tablespace_name='&TABLESPACENAME' order by 1,2;

TABLESPACE DDL
--------------
set pagesize 0
SET LONG 9999999
select dbms_metadata.get_ddl('TABLESPACE','&TABLESPACE_NAME') FROM DUAL;