Reclaim space at OS level.

Dear all
I have performed following activities to reclaim space at database level on development system but I am quite suspicious about to reclaim at OS level.
1) Choose baldat table for REORG candidate
2) Size of table before deleting record was 11GB
3) Delete record from it using slg2
4) Offline REORG done
5) Table size is now around 2.5GB
6) Since database is DB9.7 and tablespace is in DMS type, I need to issue two command as following to reclaim space at DB and OS level.
     alter tablespace TCD#BTABD lower high water mark
     ALTER TABLESPACE TCD#BTABD REDUCE (ALL CONTAINERS G/K/M)
7) I have issued only first command to lower HWM which freed up space at Database level.
     Checked from DBACOKPIT to see tablespace status as following
     Tablespace Name     KB Total     Percent Used     KB Free     Page Size (KB)     High-Water Mark (KB)
     TCD#BTABD            16121856        33.25           10762016       16                         5359712
Now my query is I want to reduce it down by 9GB at OS level so which figure I have to put (??) on the following. Is there any harm to execute this command on the fly which causes database issue???
      ALTER TABLESPACE TCD#BTABD REDUCE (ALL CONTAINERS ??? G/K/M)
Thanks
Mehul

Hi,
I have a following output from abovemention query
TBSP_NAME                      TBSP_TYPE RECLAIMABLE_SPACE_ENABLED
SYSCATSPACE                    DMS                                1
SAPTOOLS                       DMS                                1
SAPEVENTMON                    DMS                                1
PSAPTEMP16                     SMS                                0
SYSTOOLSTMPSPACE               SMS                                0
SYSTOOLSPACE                   DMS                                1
TCD#STABD                      DMS                                1
TCD#STABI                      DMS                                1
TCD#BTABD                      DMS                                1
TCD#BTABI                      DMS                                1
TCD#CLUD                       DMS                                1
TCD#CLUI                       DMS                                1
TCD#POOLD                      DMS                                1
TCD#POOLI                      DMS                                1
TCD#DDICD                      DMS                                1
TCD#DDICI                      DMS                                1
TCD#DOCUD                      DMS                                1
TCD#DOCUI                      DMS                                1
TCD#EL702D                     DMS                                1
TCD#EL702I                     DMS                                1
TCD#LOADD                      DMS                                1
TCD#LOADI                      DMS                                1
TCD#PROTD                      DMS                                1
TCD#PROTI                      DMS                                1
TCD#ES702D                     DMS                                1
TCD#ES702I                     DMS                                1
TCD#SOURCED                    DMS                                1
TCD#SOURCEI                    DMS                                1
TCD#USER1D                     DMS                                1
TCD#USER1I                     DMS                                1
TCD#DIMD                       DMS                                1
TCD#DIMI                       DMS                                1
TCD#FACTD                      DMS                                1
TCD#FACTI                      DMS                                1
TCD#ODSD                       DMS                                1
TCD#ODSI                       DMS                                1
36 record(s) selected.
Thanks
Mehul

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Can't reclaim space in tablespace after deleting records

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Thank you all.

Justin Cave wrote:
OK, so you did a SHRINK SPACE CASCADE? Not just a SHRINK SPACE?That is correct.
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Can you post the size of the table segment and the LOB segments as well as the size of the actual data in the table and the LOBs?Can you tell me which views you would like to the see the data from ? dba_lobs, dba_segments, etc... I want to make sure i have the right query for you.
Here is some info...not sure if this is what you want (formatiing is off):
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from dba_segments
where owner = 'IIQ'
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and segment_type = 'LOBSEGMENT';
OWNER SEGMENT_NAME SEGMENT_TYPE TABLESPACE_NAME BYTES
IIQ SYS_LOB0000651630C00012$$ LOBSEGMENT IIQDCMLOB01 9.8416E+10
IIQ SYS_LOB0000651630C00018$$ LOBSEGMENT IIQDCMLOB01 755236864
IIQ SYS_LOB0000651630C00021$$ LOBSEGMENT IIQDCMLOB01 755236864
IIQ SYS_LOB0000651630C00023$$ LOBSEGMENT IIQDCMLOB01 262144
IIQ SYS_LOB0000651630C00044$$ LOBSEGMENT IIQDCMLOB01 262144
IIQ SYS_LOB0000651630C00053$$ LOBSEGMENT IIQDCMLOB01 262144
OWNER TABLE_NAME
COLUMN_NAME
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"DICOM"."SOURCE"."LOCALDATA"
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Thanks.

Need to reclaim space from dwh tables.

We have couple of large tables (> 200G) in one of the DWH schema. I need to reclaim space on the mountpoint.
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I tried shrink for the tables, it did not help.
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refer to
http://jonathanlewis.wordpress.com/2010/01/30/free-space/
http://jonathanlewis.wordpress.com/2010/02/06/shrink-tablespace/
Anand

Reclaim space from DBFs

Hi All,
I have one query regarding tablespace reclaim space. I have users tablespace which is having 5 dbfs. Some of the DBFs of USERS tablespace having autoextend on with max size 32G and some of the DBFs not having autoextend on and maxsize 4G.
Now when I checked the USERS TBS through EM , I come to know only few MBs out of 20G are in used in 3 DBFs of USERS tablespace and rest of 2 dbfs are in good in use. Now I want to reclaim the space from 3 dbfs say users03,users04 and users05. users01 and users02 are properly in used. I want to reclaim the space from 03,04 and 05.
can I have any idea how to reclaim space from dbfs? I try with alter database datafile ...resize but giving error "ORA-03297: file contains used data beyond requested RESIZE value".
please suggest me,
Thanks...

Yes, I think you are understanding how it works. For a visual example, if this is your data file:
XXXX--XX-XXXX-XXXX-XXXX-XXXXXXX-----------------
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XX----X--------X------------------X-----------------
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Before you even spend the time to shrink these data files, consider the space needs for USERS. If the extended size was a one-time thing, then shrinking datafiles may be justified. If USERS may grow that large again then a data file shrink is a lot of work for little gain.

Benefits of Reorg to reclaim space in Oracle

Hi All,
I have archived and deleted records from few big tables from my database, now how want to reclaim space by doing reorg.
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Thanks & Regards,
Deepak

You cannot do much with a long raw short of export/import it - so you would export it, drop the old table, create a new one in the new tablespace and import with ignore=y. Other objects can be online redefined into this tablespace - or indexes if they are in there can be rebuilt online into this new tablespace, but moving the long raw is going to be offline.
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Regards
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Hi All,
Recently we have purged data from some tables in the database.
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how did you purge the data?
have you used delete or truncate.
please check space under dba_segments for particular object which was purged.
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https://forums.oracle.com/forums/ann.jspa?annID=718
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Hi,
I need to add datafile on an file system for example /D00/oracle/data/ file system, Before adding datafiles to that particular file system I need to check the free space on OS level and also I need to check the estimated auto extensible growth on the file system. So that I can new datafiles depending on the remaining space available to that file system. Is there any sql script available to calculate the estimated auto extend growth on one particular filesystem and give us the remaining space on the OS level….
Regards,

Can you define the term "estimated auto extend growth"? That could mean the maximum size the data file could extend to. It could mean some sort of projection based on prior extend operations that were captured in some sort of log table.
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What operating system?
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tyia

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TYPE      AVAIL    USED    FREE USED   LIMIT RESERVE PRI NAME
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Regards,
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Edited by: Prashant Shukla on Oct 13, 2008 4:21 AM
Edited by: Prashant Shukla on Oct 13, 2008 4:23 AM

Hi,
Thanks for ur reply but when I checked it from OS level why it is showing only 20GB ?
What's the diff between configured and actual swap space ?
I checked SAP Notes :146289 and 153641
They clearly says that swap space should be atleast 20 GB plus 10 GB for additional Instance for the server.
In our landscape we have CI and 4 dialog instance connected to it
that means our swap space should be 20 + 10*4=60 GB
We are having HPUX server and ST06 Swap values are
Swap
Configured swap     Kb    20,971,520   Maximum swap-space Kb    54,389,460
Free in swap-space Kb     8,697,960   Actual swap-space   Kb    54,389,460
Do we need to increase the SWAP Space to increase the system performance?
What is difference between configured swap and actual swap space ?
SAP Note 1112627 clearly says that SWAP SPACE = 2* RAM for HPUX servers.
What do you guys say about this?
Regards,
Prashant
Edited by: Prashant Shukla on Oct 13, 2008 5:15 AM
Edited by: Prashant Shukla on Oct 13, 2008 5:53 AM

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