To check all the tablespaces space detail in database:
COLUMN tsname FORMAT a25
COLUMN allocation_type FORMAT A4 TRU HEADING ALLO
COLUMN contents FORMAT A4 TRU HEADING MGMT
COLUMN Tot_Size FORMAT 999,999 HEADING "TOTAL(M)"
COLUMN Tot_Free FORMAT 999,999 HEADING "FREE(M)"
COLUMN Pct_Free FORMAT 999 HEADING "FREE %"
COLUMN Fragments FORMAT 99,999 HEADING "FRAGMTS"
COLUMN Large_Ext FORMAT 999,999 HEADING "LARG(M)"
SELECT a.tablespace_name TSNAME, SUM(a.tots)/1048576 Tot_Size,
SUM(a.sumb)/1048576 Tot_Free,
SUM(a.sumb)*100/sum(a.tots) Pct_Free,
SUM(a.largest)/1048576 Large_Ext, SUM(a.chunks) Fragments,
b.contents, b.allocation_type
FROM (SELECt tablespace_name, 0 tots, SUM(bytes) sumb,
MAX(bytes) largest, COUNT(*) chunks
FROM dba_free_space a
GROUP BY tablespace_name
UNION
SELECT tablespace_name, SUM(bytes) tots, 0, 0, 0
FROM dba_data_files
GROUP BY tablespace_name
UNION
SELECT tablespace_name, SUM(bytes) tots, 0, 0, 0
FROM dba_temp_files
GROUP BY tablespace_name) a, dba_tablespaces b
WHERE b.tablespace_name = a.tablespace_name
GROUP BY a.tablespace_name, b.contents, b.allocation_type
Order by 4
/
To check space in tablespace :
set line 180 pages 132
col file_name for a45
col TABLESPACE_NAME for a25
prompt size 2621504k,
Prompt TO increase size by 15% use command as below
prompt select <substitute Tot size of tbs>*.15 from dual;
define ts=&TABLESPACE_NAME
set verify off
SELECT A.TABLESPACE_NAME,round(SUM(A.TOTS)/1024/1024) "Tot size MB",
round(SUM(A.SUMB)/1024/1024) "Tot Free MB",
round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%FREE",
100-round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%USED",
round(SUM(A.LARGEST)/1024/1024) MAX_FREE,SUM(A.CHUNKS) CHUNKS_FREE
FROM (
SELECT TABLESPACE_NAME,0 TOTS,SUM(BYTES) SUMB,
MAX(BYTES) LARGEST,COUNT(*) CHUNKS
FROM SYS.DBA_FREE_SPACE A
GROUP BY TABLESPACE_NAME
UNION
SELECT TABLESPACE_NAME,SUM(BYTES) TOTS,0,0,0
FROM SYS.DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) A, V$INSTANCE B
where A.TABLESPACE_NAME=upper('&ts')
GROUP BY UPPER(B.INSTANCE_NAME),A.TABLESPACE_NAME
/
To check datafile associated with tablespace :
select df.FILE_ID,df.FILE_NAME,df.TABLESPACE_NAME,round(df.BYTES/1024/1024) Allocated,
round(nvl(dfs.BYTES/1024/1024,0)) FREE_SPACE, round(((df.BYTES/1024/1024)-nvl((dfs.BYTES/1024/1024),0))) USED_SPACE
from dba_data_files df,
(select file_id,tablespace_name,sum(bytes) bytes
from dba_free_space
group by file_id,tablespace_name) dfs
where df.FILE_ID=dfs.FILE_ID (+)
AND df.TABLESPACE_NAME=upper('UNDOTBS1')
order by df.FILE_ID
/
To check Tablespace free space:
SELECT TABLESPACE_NAME, SUM(BYTES/1024/1024) "Size (MB)" FROM DBA_FREE_SPACE GROUP BY TABLESPACE_NAME;
To check Tablespace by datafile:
SELECT tablespace_name, File_id, SUM(bytes/1024/1024)"Size (MB)" FROM DBA_FREE_SPACE
group by tablespace_name, file_id;
To Check Tablespace used and free space %:
SELECT /* + RULE */ df.tablespace_name "Tablespace",
df.bytes / (1024 * 1024) "Size (MB)", SUM(fs.bytes) / (1024 * 1024) "Free (MB)",
Nvl(Round(SUM(fs.bytes) * 100 / df.bytes),1) "% Free",
Round((df.bytes - SUM(fs.bytes)) * 100 / df.bytes) "% Used"
FROM dba_free_space fs,
(SELECT tablespace_name,SUM(bytes) bytes
FROM dba_data_files
GROUP BY tablespace_name) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,df.bytes
UNION ALL
SELECT /* + RULE */ df.tablespace_name tspace,
fs.bytes / (1024 * 1024), SUM(df.bytes_free) / (1024 * 1024),
Nvl(Round((SUM(fs.bytes) - df.bytes_used) * 100 / fs.bytes), 1),
Round((SUM(fs.bytes) - df.bytes_free) * 100 / fs.bytes)
FROM dba_temp_files fs,
(SELECT tablespace_name,bytes_free,bytes_used
FROM v$temp_space_header
GROUP BY tablespace_name,bytes_free,bytes_used) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,fs.bytes,df.bytes_free,df.bytes_used
ORDER BY 4 DESC;
--or--
Select t.tablespace, t.totalspace as " Totalspace(MB)", round((t.totalspace-fs.freespace),2) as "Used Space(MB)", fs.freespace as "Freespace(MB)", round(((t.totalspace-fs.freespace)/t.totalspace)*100,2) as "% Used", round((fs.freespace/t.totalspace)*100,2) as "% Free" from (select round(sum(d.bytes)/(1024*1024)) as totalspace, d.tablespace_name tablespace from dba_data_files d group by d.tablespace_name) t, (select round(sum(f.bytes)/(1024*1024)) as freespace, f.tablespace_name tablespace from dba_free_space f group by f.tablespace_name) fs where t.tablespace=fs.tablespace order by t.tablespace;
Tablespace (File wise) used and Free space
SELECT SUBSTR (df.NAME, 1, 40) file_name,dfs.tablespace_name, df.bytes / 1024 / 1024 allocated_mb, ((df.bytes / 1024 / 1024) - NVL (SUM (dfs.bytes) / 1024 / 1024, 0)) used_mb,
NVL (SUM (dfs.bytes) / 1024 / 1024, 0) free_space_mb
FROM v$datafile df, dba_free_space dfs
WHERE df.file# = dfs.file_id(+)
GROUP BY dfs.file_id, df.NAME, df.file#, df.bytes,dfs.tablespace_name
ORDER BY file_name;
To check Growth rate of Tablespace :
Note: The script will not show the growth rate of the SYS, SYSAUX Tablespace. The script is used in Oracle version 10g onwards.
SELECT TO_CHAR (sp.begin_interval_time,'DD-MM-YYYY') days,
ts.tsname , max(round((tsu.tablespace_size* dt.block_size )/(1024*1024),2) ) cur_size_MB,
max(round((tsu.tablespace_usedsize* dt.block_size )/(1024*1024),2)) usedsize_MB
FROM DBA_HIST_TBSPC_SPACE_USAGE tsu, DBA_HIST_TABLESPACE_STAT ts, DBA_HIST_SNAPSHOT sp,
DBA_TABLESPACES dt
WHERE tsu.tablespace_id= ts.ts# AND tsu.snap_id = sp.snap_id
AND ts.tsname = dt.tablespace_name AND ts.tsname NOT IN ('SYSAUX','SYSTEM')
GROUP BY TO_CHAR (sp.begin_interval_time,'DD-MM-YYYY'), ts.tsname
ORDER BY ts.tsname, days;
List all Tablespaces with free space < 10% or full space> 90%
Select a.tablespace_name,sum(a.tots/1048576) Tot_Size,
sum(a.sumb/1024) Tot_Free, sum(a.sumb)*100/sum(a.tots) Pct_Free,
ceil((((sum(a.tots) * 15) - (sum(a.sumb)*100))/85 )/1048576) Min_Add
from (select tablespace_name,0 tots,sum(bytes) sumb
from dba_free_space a
group by tablespace_name
union
Select tablespace_name,sum(bytes) tots,0 from
dba_data_files
group by tablespace_name) a
group by a.tablespace_name
having sum(a.sumb)*100/sum(a.tots) < 10
order by pct_free;
Script to find all object Occupied space for a Tablespace :
Select OWNER, SEGMENT_NAME, SUM(BYTES)/1024/1024 "SZIE IN MB" from dba_segments
where TABLESPACE_NAME = 'SDH_HRMS_DBF'
group by OWNER, SEGMENT_NAME;
Which schema are taking how much space
Select obj.owner "Owner", obj_cnt "Objects", decode(seg_size, NULL, 0, seg_size) "size MB"
from (select owner, count(*) obj_cnt from dba_objects group by owner) obj,
(select owner, ceil(sum(bytes)/1024/1024) seg_size from dba_segments group by owner) seg
where obj.owner = seg.owner(+)
order by 3 desc ,2 desc, 1;
To Check Default Temporary Tablespace Name:
Select * from database_properties where PROPERTY_NAME like '%DEFAULT%';
To know default and Temporary Tablespace for particualr User:
Select username,temporary_tablespace,default_tablespace from dba_users where username='HRMS';
To know Default Tablespace for All User:
Select default_tablespace,temporary_tablespace,username from dba_users;
To Check Datafiles used and Free Space:
SELECT SUBSTR (df.NAME, 1, 40) file_name,dfs.tablespace_name, df.bytes / 1024 / 1024 allocated_mb,
((df.bytes / 1024 / 1024) - NVL (SUM (dfs.bytes) / 1024 / 1024, 0)) used_mb,
NVL (SUM (dfs.bytes) / 1024 / 1024, 0) free_space_mb
FROM v$datafile df, dba_free_space dfs
WHERE df.file# = dfs.file_id(+)
GROUP BY dfs.file_id, df.NAME, df.file#, df.bytes,dfs.tablespace_name
ORDER BY file_name;
To check Used free space in Temporary Tablespace:
SELECT tablespace_name, SUM(bytes_used/1024/1024) USED, SUM(bytes_free/1024/1024) FREE
FROM V$temp_space_header GROUP BY tablespace_name;
SELECT A.tablespace_name tablespace, D.mb_total,
SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_used,
D.mb_total - SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_free
FROM v$sort_segment A,
( SELECT B.name, C.block_size, SUM (C.bytes) / 1024 / 1024 mb_total
FROM v$tablespace B, v$tempfile C
WHERE B.ts#= C.ts#
GROUP BY B.name, C.block_size
) D
WHERE A.tablespace_name = D.name
GROUP by A.tablespace_name, D.mb_total;
Sort (Temp) space used by Session :
SELECT S.sid || ',' || S.serial# sid_serial, S.username, S.osuser, P.spid, S.module, S.program, SUM (T.blocks) * TBS.block_size / 1024 / 1024 mb_used,
T.tablespace, COUNT(*) sort_ops
FROM v$sort_usage T, v$session S, dba_tablespaces TBS, v$process P
WHERE T.session_addr = S.saddr
AND S.paddr = P.addr AND T.tablespace = TBS.tablespace_name
GROUP BY S.sid, S.serial#, S.username, S.osuser, P.spid, S.module, S.program, TBS.block_size, T.tablespace ORDER BY sid_serial;
Sort (Temp) Space Usage by Statement
SELECT S.sid || ',' || S.serial# sid_serial, S.username, T.blocks * TBS.block_size / 1024 / 1024 mb_used, T.tablespace,T.sqladdr address, Q.hash_value, Q.sql_text
FROM v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
WHERE T.session_addr = S.saddr
AND T.sqladdr = Q.address (+) AND T.tablespace = TBS.tablespace_name
ORDER BY S.sid;
Who is using which UNDO or TEMP segment?
SELECT TO_CHAR(s.sid)||','||TO_CHAR(s.serial#) sid_serial,
NVL(s.username, 'None') orauser,s.program, r.name undoseg,
t.used_ublk * TO_NUMBER(x.value)/1024||'K' "Undo"
FROM sys.v_$rollname r, sys.v_$session s, sys.v_$transaction t, sys.v_$parameter x
WHERE s.taddr = t.addr AND r.usn = t.xidusn(+) AND x.name = 'db_block_size';
Who is using the Temp Segment?
SELECT b.tablespace, ROUND(((b.blocks*p.value)/1024/1024),2)||'M' "SIZE",
a.sid||','||a.serial# SID_SERIAL, a.username, a.program
FROM sys.v_$session a,
sys.v_$sort_usage b, sys.v_$parameter p
WHERE p.name = 'db_block_size' AND a.saddr = b.session_addr
ORDER BY b.tablespace, b.blocks;
Total Size and Free Size of Database:
Select round(sum(used.bytes) / 1024 / 1024/1024 ) || ' GB' "Database Size",
round(free.p / 1024 / 1024/1024) || ' GB' "Free space"
from (select bytes from v$datafile
union all
select bytes from v$tempfile
union all
select bytes from v$log) used,
(select sum(bytes) as p from dba_free_space) free
group by free.p;
To find used space of datafiles:
SELECT SUM(bytes)/1024/1024/1024 "GB" FROM dba_segments;
IO status of all of the datafiles in database:
WITH total_io AS
(SELECT SUM (phyrds + phywrts) sum_io
FROM v$filestat)
SELECT NAME, phyrds, phywrts, ((phyrds + phywrts) / c.sum_io) * 100 PERCENT,
phyblkrd, (phyblkrd / GREATEST (phyrds, 1)) ratio
FROM SYS.v_$filestat a, SYS.v_$dbfile b, total_io c
WHERE a.file# = b.file#
ORDER BY a.file#;
Displays Smallest size the datafiles can shrink to without a re-organize.
SELECT a.tablespace_name, a.file_name, a.bytes AS current_bytes, a.bytes - b.resize_to AS shrink_by_bytes, b.resize_to AS resize_to_bytes
FROM dba_data_files a, (SELECT file_id, MAX((block_id+blocks-1)*&v_block_size) AS resize_to
FROM dba_extents
GROUP by file_id) b
WHERE a.file_id = b.file_id
ORDER BY a.tablespace_name, a.file_name;
Scripts to Find datafiles increment details:
Select SUBSTR(fn.name,1,DECODE(INSTR(fn.name,'/',2),0,INSTR(fn.name,':',1),INSTR(fn.name,'/',2))) mount_point,tn.name tabsp_name,fn.name file_name,
ddf.bytes/1024/1024 cur_size, decode(fex.maxextend,
NULL,ddf.bytes/1024/1024,fex.maxextend*tn.blocksize/1024/1024) max_size,
nvl(fex.maxextend,0)*tn.blocksize/1024/1024 - decode(fex.maxextend,NULL,0,ddf.bytes/1024/1024) unallocated,nvl(fex.inc,0)*tn.blocksize/1024/1024 inc_by
from sys.v_$dbfile fn, sys.ts$ tn, sys.filext$ fex, sys.file$ ft, dba_data_files ddf
where fn.file# = ft.file# and fn.file# = ddf.file_id
and tn.ts# = ft.ts# and fn.file# = fex.file#(+)
order by 1;
Maximum datafile shrink possible in tablespace:
set verify off
set pagesize 999
set linesize 160
column file_name format a60 word_wrapped
column smallest format 999,990 heading "Smallest|Size|Poss."
column currsize format 999,990 heading "Current|Size"
column savings format 999,990 heading "Poss.|Savings"
break on report
compute sum of savings on report
column value new_val blksize
select value from v$parameter where name = 'db_block_size' ;
select file_name,
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) smallest,
ceil( blocks*&&blksize/1024/1024) currsize,
ceil( blocks*&&blksize/1024/1024) -
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) savings
from dba_data_files a,
( select file_id, max(block_id+blocks-1) hwm
from dba_extents
where tablespace_name = 'XXXXXXXXX'
group by file_id ) b
where a.file_id = b.file_id(+)
and tablespace_name = 'XXXXXXXXXXXXXXXXX'
order by a.tablespace_name, a.file_name ;
To see get the command for possible datafile shirnk [in tablespace_name] :
column cmd format a155 word_wrapped
select 'alter database datafile '''||file_name||''' resize ' ||
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) || 'm;' cmd
from dba_data_files a,
( select file_id, max(block_id+blocks-1) hwm
from dba_extents
where tablespace_name = 'XXXXXXXX'
group by file_id ) b
where a.file_id = b.file_id(+)
and tablespace_name = 'XXXXXXXXX'
and ceil( blocks*&&blksize/1024/1024) -
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) > 0
order by a.tablespace_name, a.file_name ;
COLUMN tsname FORMAT a25
COLUMN allocation_type FORMAT A4 TRU HEADING ALLO
COLUMN contents FORMAT A4 TRU HEADING MGMT
COLUMN Tot_Size FORMAT 999,999 HEADING "TOTAL(M)"
COLUMN Tot_Free FORMAT 999,999 HEADING "FREE(M)"
COLUMN Pct_Free FORMAT 999 HEADING "FREE %"
COLUMN Fragments FORMAT 99,999 HEADING "FRAGMTS"
COLUMN Large_Ext FORMAT 999,999 HEADING "LARG(M)"
SELECT a.tablespace_name TSNAME, SUM(a.tots)/1048576 Tot_Size,
SUM(a.sumb)/1048576 Tot_Free,
SUM(a.sumb)*100/sum(a.tots) Pct_Free,
SUM(a.largest)/1048576 Large_Ext, SUM(a.chunks) Fragments,
b.contents, b.allocation_type
FROM (SELECt tablespace_name, 0 tots, SUM(bytes) sumb,
MAX(bytes) largest, COUNT(*) chunks
FROM dba_free_space a
GROUP BY tablespace_name
UNION
SELECT tablespace_name, SUM(bytes) tots, 0, 0, 0
FROM dba_data_files
GROUP BY tablespace_name
UNION
SELECT tablespace_name, SUM(bytes) tots, 0, 0, 0
FROM dba_temp_files
GROUP BY tablespace_name) a, dba_tablespaces b
WHERE b.tablespace_name = a.tablespace_name
GROUP BY a.tablespace_name, b.contents, b.allocation_type
Order by 4
/
To check space in tablespace :
set line 180 pages 132
col file_name for a45
col TABLESPACE_NAME for a25
prompt size 2621504k,
Prompt TO increase size by 15% use command as below
prompt select <substitute Tot size of tbs>*.15 from dual;
define ts=&TABLESPACE_NAME
set verify off
SELECT A.TABLESPACE_NAME,round(SUM(A.TOTS)/1024/1024) "Tot size MB",
round(SUM(A.SUMB)/1024/1024) "Tot Free MB",
round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%FREE",
100-round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%USED",
round(SUM(A.LARGEST)/1024/1024) MAX_FREE,SUM(A.CHUNKS) CHUNKS_FREE
FROM (
SELECT TABLESPACE_NAME,0 TOTS,SUM(BYTES) SUMB,
MAX(BYTES) LARGEST,COUNT(*) CHUNKS
FROM SYS.DBA_FREE_SPACE A
GROUP BY TABLESPACE_NAME
UNION
SELECT TABLESPACE_NAME,SUM(BYTES) TOTS,0,0,0
FROM SYS.DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) A, V$INSTANCE B
where A.TABLESPACE_NAME=upper('&ts')
GROUP BY UPPER(B.INSTANCE_NAME),A.TABLESPACE_NAME
/
To check datafile associated with tablespace :
select df.FILE_ID,df.FILE_NAME,df.TABLESPACE_NAME,round(df.BYTES/1024/1024) Allocated,
round(nvl(dfs.BYTES/1024/1024,0)) FREE_SPACE, round(((df.BYTES/1024/1024)-nvl((dfs.BYTES/1024/1024),0))) USED_SPACE
from dba_data_files df,
(select file_id,tablespace_name,sum(bytes) bytes
from dba_free_space
group by file_id,tablespace_name) dfs
where df.FILE_ID=dfs.FILE_ID (+)
AND df.TABLESPACE_NAME=upper('UNDOTBS1')
order by df.FILE_ID
/
To check Tablespace free space:
SELECT TABLESPACE_NAME, SUM(BYTES/1024/1024) "Size (MB)" FROM DBA_FREE_SPACE GROUP BY TABLESPACE_NAME;
To check Tablespace by datafile:
SELECT tablespace_name, File_id, SUM(bytes/1024/1024)"Size (MB)" FROM DBA_FREE_SPACE
group by tablespace_name, file_id;
To Check Tablespace used and free space %:
SELECT /* + RULE */ df.tablespace_name "Tablespace",
df.bytes / (1024 * 1024) "Size (MB)", SUM(fs.bytes) / (1024 * 1024) "Free (MB)",
Nvl(Round(SUM(fs.bytes) * 100 / df.bytes),1) "% Free",
Round((df.bytes - SUM(fs.bytes)) * 100 / df.bytes) "% Used"
FROM dba_free_space fs,
(SELECT tablespace_name,SUM(bytes) bytes
FROM dba_data_files
GROUP BY tablespace_name) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,df.bytes
UNION ALL
SELECT /* + RULE */ df.tablespace_name tspace,
fs.bytes / (1024 * 1024), SUM(df.bytes_free) / (1024 * 1024),
Nvl(Round((SUM(fs.bytes) - df.bytes_used) * 100 / fs.bytes), 1),
Round((SUM(fs.bytes) - df.bytes_free) * 100 / fs.bytes)
FROM dba_temp_files fs,
(SELECT tablespace_name,bytes_free,bytes_used
FROM v$temp_space_header
GROUP BY tablespace_name,bytes_free,bytes_used) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,fs.bytes,df.bytes_free,df.bytes_used
ORDER BY 4 DESC;
--or--
Select t.tablespace, t.totalspace as " Totalspace(MB)", round((t.totalspace-fs.freespace),2) as "Used Space(MB)", fs.freespace as "Freespace(MB)", round(((t.totalspace-fs.freespace)/t.totalspace)*100,2) as "% Used", round((fs.freespace/t.totalspace)*100,2) as "% Free" from (select round(sum(d.bytes)/(1024*1024)) as totalspace, d.tablespace_name tablespace from dba_data_files d group by d.tablespace_name) t, (select round(sum(f.bytes)/(1024*1024)) as freespace, f.tablespace_name tablespace from dba_free_space f group by f.tablespace_name) fs where t.tablespace=fs.tablespace order by t.tablespace;
Tablespace (File wise) used and Free space
SELECT SUBSTR (df.NAME, 1, 40) file_name,dfs.tablespace_name, df.bytes / 1024 / 1024 allocated_mb, ((df.bytes / 1024 / 1024) - NVL (SUM (dfs.bytes) / 1024 / 1024, 0)) used_mb,
NVL (SUM (dfs.bytes) / 1024 / 1024, 0) free_space_mb
FROM v$datafile df, dba_free_space dfs
WHERE df.file# = dfs.file_id(+)
GROUP BY dfs.file_id, df.NAME, df.file#, df.bytes,dfs.tablespace_name
ORDER BY file_name;
To check Growth rate of Tablespace :
Note: The script will not show the growth rate of the SYS, SYSAUX Tablespace. The script is used in Oracle version 10g onwards.
SELECT TO_CHAR (sp.begin_interval_time,'DD-MM-YYYY') days,
ts.tsname , max(round((tsu.tablespace_size* dt.block_size )/(1024*1024),2) ) cur_size_MB,
max(round((tsu.tablespace_usedsize* dt.block_size )/(1024*1024),2)) usedsize_MB
FROM DBA_HIST_TBSPC_SPACE_USAGE tsu, DBA_HIST_TABLESPACE_STAT ts, DBA_HIST_SNAPSHOT sp,
DBA_TABLESPACES dt
WHERE tsu.tablespace_id= ts.ts# AND tsu.snap_id = sp.snap_id
AND ts.tsname = dt.tablespace_name AND ts.tsname NOT IN ('SYSAUX','SYSTEM')
GROUP BY TO_CHAR (sp.begin_interval_time,'DD-MM-YYYY'), ts.tsname
ORDER BY ts.tsname, days;
List all Tablespaces with free space < 10% or full space> 90%
Select a.tablespace_name,sum(a.tots/1048576) Tot_Size,
sum(a.sumb/1024) Tot_Free, sum(a.sumb)*100/sum(a.tots) Pct_Free,
ceil((((sum(a.tots) * 15) - (sum(a.sumb)*100))/85 )/1048576) Min_Add
from (select tablespace_name,0 tots,sum(bytes) sumb
from dba_free_space a
group by tablespace_name
union
Select tablespace_name,sum(bytes) tots,0 from
dba_data_files
group by tablespace_name) a
group by a.tablespace_name
having sum(a.sumb)*100/sum(a.tots) < 10
order by pct_free;
Script to find all object Occupied space for a Tablespace :
Select OWNER, SEGMENT_NAME, SUM(BYTES)/1024/1024 "SZIE IN MB" from dba_segments
where TABLESPACE_NAME = 'SDH_HRMS_DBF'
group by OWNER, SEGMENT_NAME;
Which schema are taking how much space
Select obj.owner "Owner", obj_cnt "Objects", decode(seg_size, NULL, 0, seg_size) "size MB"
from (select owner, count(*) obj_cnt from dba_objects group by owner) obj,
(select owner, ceil(sum(bytes)/1024/1024) seg_size from dba_segments group by owner) seg
where obj.owner = seg.owner(+)
order by 3 desc ,2 desc, 1;
To Check Default Temporary Tablespace Name:
Select * from database_properties where PROPERTY_NAME like '%DEFAULT%';
To know default and Temporary Tablespace for particualr User:
Select username,temporary_tablespace,default_tablespace from dba_users where username='HRMS';
To know Default Tablespace for All User:
Select default_tablespace,temporary_tablespace,username from dba_users;
To Check Datafiles used and Free Space:
SELECT SUBSTR (df.NAME, 1, 40) file_name,dfs.tablespace_name, df.bytes / 1024 / 1024 allocated_mb,
((df.bytes / 1024 / 1024) - NVL (SUM (dfs.bytes) / 1024 / 1024, 0)) used_mb,
NVL (SUM (dfs.bytes) / 1024 / 1024, 0) free_space_mb
FROM v$datafile df, dba_free_space dfs
WHERE df.file# = dfs.file_id(+)
GROUP BY dfs.file_id, df.NAME, df.file#, df.bytes,dfs.tablespace_name
ORDER BY file_name;
To check Used free space in Temporary Tablespace:
SELECT tablespace_name, SUM(bytes_used/1024/1024) USED, SUM(bytes_free/1024/1024) FREE
FROM V$temp_space_header GROUP BY tablespace_name;
SELECT A.tablespace_name tablespace, D.mb_total,
SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_used,
D.mb_total - SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_free
FROM v$sort_segment A,
( SELECT B.name, C.block_size, SUM (C.bytes) / 1024 / 1024 mb_total
FROM v$tablespace B, v$tempfile C
WHERE B.ts#= C.ts#
GROUP BY B.name, C.block_size
) D
WHERE A.tablespace_name = D.name
GROUP by A.tablespace_name, D.mb_total;
Sort (Temp) space used by Session :
SELECT S.sid || ',' || S.serial# sid_serial, S.username, S.osuser, P.spid, S.module, S.program, SUM (T.blocks) * TBS.block_size / 1024 / 1024 mb_used,
T.tablespace, COUNT(*) sort_ops
FROM v$sort_usage T, v$session S, dba_tablespaces TBS, v$process P
WHERE T.session_addr = S.saddr
AND S.paddr = P.addr AND T.tablespace = TBS.tablespace_name
GROUP BY S.sid, S.serial#, S.username, S.osuser, P.spid, S.module, S.program, TBS.block_size, T.tablespace ORDER BY sid_serial;
Sort (Temp) Space Usage by Statement
SELECT S.sid || ',' || S.serial# sid_serial, S.username, T.blocks * TBS.block_size / 1024 / 1024 mb_used, T.tablespace,T.sqladdr address, Q.hash_value, Q.sql_text
FROM v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
WHERE T.session_addr = S.saddr
AND T.sqladdr = Q.address (+) AND T.tablespace = TBS.tablespace_name
ORDER BY S.sid;
Who is using which UNDO or TEMP segment?
SELECT TO_CHAR(s.sid)||','||TO_CHAR(s.serial#) sid_serial,
NVL(s.username, 'None') orauser,s.program, r.name undoseg,
t.used_ublk * TO_NUMBER(x.value)/1024||'K' "Undo"
FROM sys.v_$rollname r, sys.v_$session s, sys.v_$transaction t, sys.v_$parameter x
WHERE s.taddr = t.addr AND r.usn = t.xidusn(+) AND x.name = 'db_block_size';
Who is using the Temp Segment?
SELECT b.tablespace, ROUND(((b.blocks*p.value)/1024/1024),2)||'M' "SIZE",
a.sid||','||a.serial# SID_SERIAL, a.username, a.program
FROM sys.v_$session a,
sys.v_$sort_usage b, sys.v_$parameter p
WHERE p.name = 'db_block_size' AND a.saddr = b.session_addr
ORDER BY b.tablespace, b.blocks;
Total Size and Free Size of Database:
Select round(sum(used.bytes) / 1024 / 1024/1024 ) || ' GB' "Database Size",
round(free.p / 1024 / 1024/1024) || ' GB' "Free space"
from (select bytes from v$datafile
union all
select bytes from v$tempfile
union all
select bytes from v$log) used,
(select sum(bytes) as p from dba_free_space) free
group by free.p;
To find used space of datafiles:
SELECT SUM(bytes)/1024/1024/1024 "GB" FROM dba_segments;
IO status of all of the datafiles in database:
WITH total_io AS
(SELECT SUM (phyrds + phywrts) sum_io
FROM v$filestat)
SELECT NAME, phyrds, phywrts, ((phyrds + phywrts) / c.sum_io) * 100 PERCENT,
phyblkrd, (phyblkrd / GREATEST (phyrds, 1)) ratio
FROM SYS.v_$filestat a, SYS.v_$dbfile b, total_io c
WHERE a.file# = b.file#
ORDER BY a.file#;
Displays Smallest size the datafiles can shrink to without a re-organize.
SELECT a.tablespace_name, a.file_name, a.bytes AS current_bytes, a.bytes - b.resize_to AS shrink_by_bytes, b.resize_to AS resize_to_bytes
FROM dba_data_files a, (SELECT file_id, MAX((block_id+blocks-1)*&v_block_size) AS resize_to
FROM dba_extents
GROUP by file_id) b
WHERE a.file_id = b.file_id
ORDER BY a.tablespace_name, a.file_name;
Scripts to Find datafiles increment details:
Select SUBSTR(fn.name,1,DECODE(INSTR(fn.name,'/',2),0,INSTR(fn.name,':',1),INSTR(fn.name,'/',2))) mount_point,tn.name tabsp_name,fn.name file_name,
ddf.bytes/1024/1024 cur_size, decode(fex.maxextend,
NULL,ddf.bytes/1024/1024,fex.maxextend*tn.blocksize/1024/1024) max_size,
nvl(fex.maxextend,0)*tn.blocksize/1024/1024 - decode(fex.maxextend,NULL,0,ddf.bytes/1024/1024) unallocated,nvl(fex.inc,0)*tn.blocksize/1024/1024 inc_by
from sys.v_$dbfile fn, sys.ts$ tn, sys.filext$ fex, sys.file$ ft, dba_data_files ddf
where fn.file# = ft.file# and fn.file# = ddf.file_id
and tn.ts# = ft.ts# and fn.file# = fex.file#(+)
order by 1;
Maximum datafile shrink possible in tablespace:
set verify off
set pagesize 999
set linesize 160
column file_name format a60 word_wrapped
column smallest format 999,990 heading "Smallest|Size|Poss."
column currsize format 999,990 heading "Current|Size"
column savings format 999,990 heading "Poss.|Savings"
break on report
compute sum of savings on report
column value new_val blksize
select value from v$parameter where name = 'db_block_size' ;
select file_name,
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) smallest,
ceil( blocks*&&blksize/1024/1024) currsize,
ceil( blocks*&&blksize/1024/1024) -
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) savings
from dba_data_files a,
( select file_id, max(block_id+blocks-1) hwm
from dba_extents
where tablespace_name = 'XXXXXXXXX'
group by file_id ) b
where a.file_id = b.file_id(+)
and tablespace_name = 'XXXXXXXXXXXXXXXXX'
order by a.tablespace_name, a.file_name ;
To see get the command for possible datafile shirnk [in tablespace_name] :
column cmd format a155 word_wrapped
select 'alter database datafile '''||file_name||''' resize ' ||
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) || 'm;' cmd
from dba_data_files a,
( select file_id, max(block_id+blocks-1) hwm
from dba_extents
where tablespace_name = 'XXXXXXXX'
group by file_id ) b
where a.file_id = b.file_id(+)
and tablespace_name = 'XXXXXXXXX'
and ceil( blocks*&&blksize/1024/1024) -
ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) > 0
order by a.tablespace_name, a.file_name ;
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