free space in database

Similar Questions

• Problem free space in database calculation

  Hi all
  
  I'm calculating free space in the database by using query below, but I get an incorrect result.
  Please advice.
  
  
  Query: -.
  
  SELECT DF.tablespace_name tsname,.
  Sum (df.bytes) / 1024/1024 tbs_size_mb,.
  NVL(sum(e.used_bytes)/1024/1024,0) used,
  NVL(sum(f.free_bytes)/1024/1024,0) avail.
  RPAD(' '||) (RPAD('X',Round(Sum(e.used_bytes)*10/Sum(DF.bytes),0), 'X'), 11,'-') used_visual,.
  NVL((sum(e.used_bytes)*100)/sum(DF.bytes),0) pct_used
  OF sys.dba_data_files df,.
  (SELECT file_id, sum (nvl(bytes,0)) used_bytes
  OF sys.dba_extents
  E GROUP BY file_id),
  (SELECT max (bytes) free_bytes, file_id FROM dba_free_space
  GROUP BY file_id) f
  WHERE e.file_id (+) = df.file_id
  AND df.file_id = f.file_id (+)
  GROUP BY df.tablespace_name
  ORDER BY 6
  
  /
  
  
  
  
  and the output is
  
  
  
  *************************
  TABLESPACE STATUS *.
  *************************
  
  Size used for free
  Tablespace name (Mo) (Mo) (Mo) used % used
  -------------------- -------- -------- -------- ----------- ------
  TOOLS 12 0 12 - 0
  INDEX 4 824 0 50 - 0
  TEMP 32 768 384 4 - 1
  RBS 6 095 100 2 143 - 2
  IMPORT OF 25 600 450 25 150 - 2
  TEMP02 X 8 000 896 7 104 - 11
  300 84 216 XXX - 28 SYSTEM
  16 000 4 650 11 150 XXX - 29 NEWINDEX
  100 44 56 XXXX PERFSTAT - 44
  USERS 63 166 46 173 4 160 XXXXXXX - 73
  -------- -------- --------
  the sum of 156 865 52 781 50 045
  
  
  
  
  
  
  Order of the users tablespace size is 63 GB used is 43 GB and free is 4 GB... and where is the rest of 10-12 Go went?
  
  I use the query above on 8i
  
  
  Please advice.
  
  Kind regards
  A

  format free column 9999999999999
  used column format 9999999999999
  format column 9999999999999 total
  Column file_name format a30
  set line 200
  Select a.file_id, a.file_name, total a.bytes, b.used, a.bytes - free b.used
  (select file_id, file_name, decode(maxbytes,0,bytes,maxbytes) bytes
  from dba_data_files) has,
  (select file_id, sum (bytes) used from dba_extents file_id group) b
  where a.file_id = b.file_id (+)
  order of a.file_id;

  Source:Re: size maximum for a data file

  HTH
  Girish Sharma

• Script of free space for the physics of the standby database

  I need to determine how much free space I have in my physical storage spaces of the standby database. Is there a query for this? Remember that dba_ views are not available in a mounted single standby database so I'm pretty well limited to using the views v$. Thank you

  Why do you think you have to check the free space into a storage ensures physical ?
  You cannot create all segments anyway.

  Kind regards
  Uwe Hesse

  http://uhesse.WordPress.com

• Data ESXI free space consumption permanently store

  Dear,

  Please I need help, our ESXI 5.5 database have a total of 2 TB of space and have 2 virtual machine, virtual computers have 'Thick lazy provisioned to zero' hard drives

  but before we have 471 GB of free space, but since last week, our space free datastore continually dwindling I don't know why, after all you said 3minutes datastore is reduced by a few megabytes

  Please any help is greatly appreciated :-),.

  Definitely Yes. Snapshot files increases over time, according to the changed data in the virtual disk. They can grow up to the size of their basic disks provisioned.

  André

• Calculate the free space of the lob segment / reclaim space?

  Friends...

  DB: 11 GR 2

  OS: Linux

  I am trying shrink lob segment and recover the free space between the business segments.

  This area in Oracle DB is new to me so try to learn and to shrink the segment.

  I went through various metalink doco (386341.1) but not be able to get answers for below...

  Issues related to the:

  1. how much free space is available in the lob segment?

  2 can I assume 'no LOB DATA' as the free space currently and even will be recovered once the segment will be shrunk?

  3. no disadvantage of using "ALTER TABLE... SHRINK SPACE.

  4. is it true if storage segment is 100 GB as many redo will be generated when trying to alter table... shrink the space?

  I'm following the steps below.

  1 find Segment name-> sys_lob123

  2. find the size of storage - > 100 GB

  3. find the size of the LOB data-> 70

  4. find the size of the data not LOB-> 30

  2. the storage size

  Select 'storage' from dba_extents bytes

  where nom_segment = 'sys_lob123. '

  100 GB

  3. the size of the LOB

  Select dbms_lob.getlength (col_lob) in the table_lob;

  70 GB

  4. the size of the LOB data not

  100-70 = 30 GB (i.e. #3 - #2)

  Thanks in advance and enjoy your time looking into this...

  Use DBMS_REDEFINITION to reorganize the LOB segment, it is the best way to retrieve a LOB segment space. Also use the clause "MEANS of COMPRESS" and SECURE LEADER, creating the temp table. There is no reason that you can use the BASIC FILE. It's online process, which means that your app can stay up to... However, make sure that monitor you the database when executing redef, as it can cause conflicts and slow down your application, in which case you must kill the reorg...

  If this process is not feasible or overwhelms you, "ALTER TABLE MOVE" is another option.

  With 'Displacement of Alter table', you need to rebuild all indexes after you move the LOB segment. Don't forget this is an offline process and your application needs a time out while you do this.

  Here is the query to list the 10 LOBs albums in your database-

  fixed line 160

  Col a20 PROPRIETARY format

  Col TABLE_NAME format a30

  Col COLUMN_NAME format a30

  Col nom_segment format a30

  size col 999 999 999 format

  SELECT *.

  FROM (SELECT b.owner,

  b.table_name,

  b.column_name,

  a.segment_name,

  SUM (a.bytes) / (1024 * 1024) "size".

  FROM dba_segments a, b dba_lobs

  WHERE a.segment_name LIKE '% SYS_LOB '.

  AND a.segment_name = b.segment_name

  AND a.owner NOT IN ('SYS', 'SYSTEM', 'GENERAL', "OUTLN")

  B.owner GROUP,

  b.table_name,

  b.column_name,

  a.segment_name

  ORDER BY DESC 5)

  WHERE ROWNUM<>

• 10g reclaim free space

  Hello

  I would like to make a few space optimization in Oracle 10.2 data.

  Select sum (bytes) / 1024/1024/1024 dba_segments; give me 26.2 GB

  Select sum (bytes) / 1024/1024/1024 of dba_data_files; gives me 43.9 GB

  Select sum (bytes) / 1024/1024/1024 dba_free_space; gives me 17.5 GB

  So I would get 17.5 GB unused disk space.

  I can't use Segment space Adviser due to lack of license.

  What is the best way to identify 'bad' TABLES/INDEX objects that are the best candidates for the SHRINK operation.

  I know that I have free unused space in the DB, but now I am only able to find storage space of (from dba_free_space) who have an amount of free space. I don't know how to find specific TABLES/INDEXES with the wasted space.

  I tried to run the script bellow. A space has been recovered, but still 17.5 GB of unused space in the data files.

  set pages 0
  set lin 150
  set verify off
  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"
  column sum format 999,999,999
  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
          group by file_id ) b
  where a.file_id = b.file_id(+)
  /
  
  
  column cmd format a95 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
          group by file_id ) b
  where a.file_id = b.file_id(+)
    and ceil( blocks*&&blksize/1024/1024) -
        ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) > 0
  /
  
  
  
  
  
  
  
  
  
  

  Thanks for some tips

  The following SQL * more example uses the DBMS_SPACE package to get information from the unused space.

  SQL > total_blocks VARIABLE NUMBER

  SQL > total_bytes VARIABLE NUMBER

  SQL > unused_blocks VARIABLE NUMBER

  SQL > unused_bytes VARIABLE NUMBER

  SQL > lastextf VARIABLE NUMBER

  SQL > last_extb VARIABLE NUMBER

  SQL > lastusedblock VARIABLE NUMBER

  SQL > exec DBMS_SPACE. UNUSED_SPACE ('SCOTT', 'EMP', 'TABLE',: total_blocks,-)

  >: total_bytes,: unused_blocks,: unused_bytes,: lastextf, -.

  (>: last_extb,: lastusedblock);

  PL/SQL procedure successfully completed.

  SQL > PRINT

  TOTAL_BLOCKS

  ------------

  5

  TOTAL_BYTES

  -----------

  10240

  ...

  LASTUSEDBLOCK

  -------------

  3

  Management of space for schema objects

  Please read ORACLE-BASE - recovery of the space not used in the data files

• Free space capacity, put into service,

  Hello

  I know that this has also been discussed in other threads, but still things are not clear to me.

  I store data with space set aside almost two times more capacity and about 30 GB of free.

  I understand that space put into service can be more if I have a provisioning, but this isn't the case. Thick, all my machines are put into service.
  The next thing are snapshots. I have pictures so probably that's why I put into service space more than my abilities.

  What don't get me, is how I still get free space... I mean that snapshots take up real space. If I have a 50 GB HD a snapshot 1 50 GB is created. So, normally, in my opinion, I would actually have 100 GB of storage used and a - Let's say - 60 GB datastore which means I have no available space...

  I miss something here?

  A snapshot in VMware products contains only deltas, i.e. becomes the parent disk. A snapshot starts with a small file and develops over time. Since it can grow to the size of the virtual disk that is put into service, the maximum size is added to the space put into service that appears in the summary virtual machines.

  Just a quick comment for "all snapshots are by default thin stocked... ». It's not exactly how it is. Provisioning is a feature of system files and used only for disks virtual base. Snapshots use a fragmented, file format which consists of blocks of metadata database and checked.

  André

• daafiles used and free space

  HII everyone,
  I want to check the space used and free of all my (10.2.0.3) database data files, 5,7 redhat platform.
  your help is very appreciated thanks.
  
  Published by: 938946 on December 31, 2012 04:38

  Your query is unnecessarily complicated and aggregation has messed up.

  View dba_data_files, dba_temp_files, and v$ temp_space_header all have one line per tablespace data file. So, you need to aggregate the values based on the name of the tablespace.

  Similarly, dba_free_space contains a line by "block" of the free space in the tablespace. So, if your tablespace apps_ts say 4 blocks of free space, then it will have 4 rows for the apps_ts tablespace. Yet once, you will need to overall based on tablespace name before anything else.

  The tablespace temp will almost never have any free space because if the Oracle way works. Once a measure is created in the temp tablespace that he is never deallocated. When the transaction who "created" the measure is finished using it, it is marked as being available for other sessions, but it is so more free space.

  The query below, that's what I think you are looking for regular storage space. If you really need to show the temp tablespace, then you can add a third request from the union to that all interview to watch dba_temp_files. If there is a free space in the tablespace temp it will appear in dba_free_space.

  select tablespace_name,
         round(sum(allocated_space) / 1024 / 1024, 2) "Size (MB)",
         round(sum(free_space) / 1024 / 1024, 2) "Free (MB)",
         round((sum(free_space)/sum(allocated_space)) * 100, 2) "% Free",
         round(((sum(allocated_space) - sum(free_space))/sum(allocated_space)) * 100, 2) "%Used"
  from (select tablespace_name, bytes allocated_space, 0 free_space
        from dba_data_files
        union all
        select tablespace_name, 0 allocated_space, bytes free_space
        from dba_free_space)
  group by tablespace_name
  Order by 4
  

  John

• How much free space will be left after you import?

  Hallo. I need to replace all the patterns on the integration server using those on the production server. I want to know how much free space is left on/off data to the integration server after this kind of refreshment. The two databases are Oracle 9 so I'll use exp/IMP. Here's how I do it. Could check you if I think that good? It is 72 GB of free space on/data on the target server.
  
  Size used Avail capacity mounted file system
  / dev/vgsmxdata/lvsmxcopy G 194,74 122,56 72,18 G G 63% / data
  
  Overall size of the exported schemas of the SOURCE_DB is 150 GB. The same patterns on TARGET_DB takes 90 GB. If the difference is 60GB. Free space in the data files in TARGET_DB is 30 GB. This means that in the first place, the free space in the data files is filled and after that datafiles extend? This would mean that a database would extend up to 150 GB and data/free space would be 40 GB after updating. Am I wrong?
  
  SELECT ' TOTAL :'|| SUM (ALLOCATED_MB),
  ' USE :'|| SUM (USED_MB) USED,
  "FREE :'||". SUM (FREE_SPACE_MB)
  FROM (SELECT SUBSTR (df.NAME, 1, 40) file_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
  V $ datafile df, dfs dba_free_space
  WHERE df.file # = dfs.file_id (+)
  GROUP OF dfs.file_id, df.NAME, df.file #, df.bytes
  ORDER BY file_name);
  
  SOURCE_DB@Server1
  TOTAL (MB): 170860.984375
  USED (MB): 152777.859375
  FREE (MB): 18083.125
  
  TARGET_DB@Server2
  TOTAL (MB): 121634,984375
  USED (MB): 92853,109375
  FREE (MB): 28 781 875
  
  Published by: Przemek P on October 9, 2012 10:48

  There are a few potential pitfalls. First of all, when you import, the definition of the INITIAL segment may be too big, using more place you expect. This can be things like adding many lines, remove them and do not reset the high watermark before an insertion above the upper limit, or sometimes old problems that nobody noticed have stayed or reproduced. Second, if you have tables that have been updated, by using the pctfree in most blocks, then pctfree is honored to import, leaving more room never-to-be-used in blocks.

  From my experience, those who do rarely estimate more than 10% to the title, but sometimes previous misadventures are not completely fixed, wasting a lot of space or using excessive space. I spend usually less computing time and time of observation. But then again, I know what to expect of my App YMMV.

• Doubt of free space area of fast recovery

  Hi all
  
  
  I have 11.2.0.3.0 Oracle 64-bit of Windows 2008 Server, I have the database with ASM and I activated the Flashback in my database...
  I assigned 8 GB for db size of area of recovery, I have backups Rman, flashback logs, archive logs...
  My doubt is automatically free space of oracle in the case of no free space in FRA, I checked for RMAN backups, automatically my obsolete backups are removed from the FRA, but I doubt on the flashback logs... .my flashback retention period is 1 day...
  
  Is oracle automatically removes obsolete flashback logs in the case of no free space in FRA aur manually I need to delete?
  
  Thank you and best regards,
  Vikash Chauradia

  Is oracle automatically removes obsolete flashback logs in the case of no free space in FRA aur manually I need to delete?

  It is also used by oracle automatically if obsolete based on the retention policy.

  11 g Doc: -.

  If a newspaper flashback is old enough that it is no longer necessary to satisfy the purpose of retention of flashback, then a newspaper flashback is reused.

  http://docs.Oracle.com/CD/E11882_01/backup.112/e10642/flashdb.htm

• Store of data for a single data Windows drive must free space for snapshots or any other reason?

  I have a machine virtual it is partition C: is on a data store. I have a data store separate 500 GB and I want to give all of the 500 GB for this virtual machine as a D: partition. I think that for this virtual machine snapshots will reside on the data store that is home to the C: partition. Is this correct or should I leave little free space on the data of 500GB store?

  In addition to the vmdk, a small header file (a few bytes) is created in the data store. You may need a few (a few MB) of additional space if you use the modified block followed for example backup and replication. So I recommend that leave you little free space.

  Make sure that the database VM store is configured with at least a 2 MB block size so you can fix the vmdk on the virtual machine.

  André

• Is it difficult for oracle follow the news of free space in the tablespace Temp?

  DB version: 11.1
  
  http://docs.Oracle.com/CD/B28359_01/server.111/b28320/statviews_5056.htm
  

   
  FREE_SPACE :      Total free space available, in bytes, including space that is currently allocated and available for reuse and space that is currently unallocated
  
  ALLOCATED_SPACE : Total allocated space, in bytes, including space that is currently allocated and used and space that is currently allocated and available for reuse

  !!!!
  
  I know that temporary tablespace is 'temporary' and varies according to gender, creating index... etc. But, can't they say just free space in bytes.
  Lets say my temporary tablespace size is 2 GB and if the DBA_TEMP_FREE_SPACE.free_space column is 500 MB. What does that mean?

  >
  Lets say my temporary tablespace size is 2 GB and if the DBA_TEMP_FREE_SPACE.free_space column is 500 MB. What does that mean?
  >
  This means for a locally managed temporary tablespace, reduce the size to the amount of space currently in use; in other words, reclaim the space unallocated and allocated space is unused.

  TABLESPACE_SIZE - FREE_SPACE

  See Shrinking a temporary Tablespace locally managed in the DBA Guide
  http://docs.Oracle.com/CD/B28359_01/server.111/b28310/tspaces007.htm
  >
  The great sorting operations performed by the database can cause a temporary tablespace more and taking a considerable amount of disk space. When the sort operation is complete, the extra space is not released; It is just marked as free and available for reuse. Therefore, a single operation of large size can result in a large amount of temporary space that remains unused, once the sort operation. For this reason, the database allows to shrink the locally managed temporary tablespaces and free up unused space.
  . . .
  Shrinking frees as much space as possible while maintaining the other attributes of the tablespace or tempfile.

• Calculation of the free space in a data file

  Hello
  
  I use Oracle database 11g (11.1.0.6). I need to calculate available disk space that exist in a special database for inserting new records. I look in the table dba_data_files for this information. I use the sub query to get the value of maxsize allocated in GB this until datafile that it can grow.
  
  Select maxbytes/1024/1024/1024 of dba_data_files where nom_tablespace = 'XXXX '.
  
  How to get the disk space available for the insertion of new records in a particular data file or a bunch of data files in a tablespace?
  
  
  Kind regards
  
  007

  007 wrote:
  Hi Helios - Gunes EROL,

  The Select sum (bytes) / 1024/1024/1024 "GB" of dba_data_files where nom_tablespace = 'xx' query tells you the sum of all files of size data in a tablespace. But I need the free space available in these data files. How to get it?

  Kind regards

  007

  Use

  select sum(bytes/1024/1024/1024) GB from dba_free_space where tablespace_name='tablespace name'
  

  Know schemae storage space

  select default_tablespace from dba_users where username='schema name';
  

  Know the perticular table tablespace

  select TABLESPACE_NAME from dba_tables where table_name='table name';
  

  Utimetly you will be insert in tablespace, little matter how many data file you have and how many girl and how many of them have the space available.
  So just to worry when the table space is saturated.

• Free space affect performance?

  I noticed on databases (work and test) I have the same indexes built on the tables, I'd like to, but the duration of the stored procedure for the race is very different: the test is very very slow to run. Because by querying the USER_FREE_SPACE table, I see that the test of free space is very low, is - this may be a possible explanation for my problem? For example on some queries of the stored procedure plan will contact told me that some indices are not used on db test even though their own statistics and index are the same db work.
  Thank you!

  Mark1970 wrote:
  I noticed on databases (work and test) I have the same indexes built on the tables, I'd like to, but the duration of the stored procedure for the race is very different: the test is very very slow to run. Because by querying the USER_FREE_SPACE table, I see that the test of free space is very low, is - this may be a possible explanation for my problem?

  Free space can make a difference. But generally not for selects them.

  For example on some queries of the stored procedure plan will contact told me that some indices are not used on db test even though their own statistics and index are the same db work.

  Now, IT will make a difference. If the index is not used, but should be used, then the query will be slow. My hypothesis is that the TABLE or COLUMN statistics are not up do date. The index statistics itself will not make much difference. but the selectivity of column statistics will decide whether or not the index is used by the CBO.

• No free space after deleting files - trouble with optimized storage?

  Hi, I have macos Sierra and I deleted many files to my main drive and also to my external hard drive (both to the Mac OS Extended format) in preparation for the boot camp. I also emptied the Recycle Bin, although there is much less space on the two disks that it should be and the majority of the space is obviously indicated under "purgeable". I thought it would not be a problem, because I assumed that the space would be released, if I move all of the files there and if I need for the new Windows partition. However, this assumption was false. I can't simply use storage that I released. I can't move there all the files and I can't create the partition from free space. What can I do with it? It's pretty frustrating... Thanks for the help!

  You must use the Bootcamp Assistant to create the Bootcamp partition.

  Please provide details on the total space and free space on your internal drive. Post screenshots of what you see in system-> storage information. In addition, select the drive in Finder-I press control and post a screenshot of the window read the information.