Drop datafile from tablespace

I'm new to oracle.
After I extended a tablespace I understood that it was too large.
I've been reading about how to drop a tablespace, but I don't want to drop the entire tablespace. I just want to drop the last datafile of this tablespace.
I know how to drop tablespaces in sapdba and brtools, but I don't know how I can drop one specific datafile (number 29) of the tablespace PSAPBTABD?
Please Help med.
Best regards
Harald V

Hello Harald,
see please this thread:
Re: How to drop data file?
also the section 43. How can I delete a data file that was created by mistake
in the SAP Note 592393 - FAQ: Oracle
if you have Oracle 9i databases, it is not easy to drop a datafile, but in Oracle 10g
you can drop a datafile like that:
ALTER TABLESPACE <Tablespace Name> DROP DATAFILE '<PATH und NAME of Datafile>';
for example, you have a tablespace called PSAPC11 and you want to drop a datafile called dat.data15 of this tablespace, you can drop it like that:
e.g. alter tablespace PSAPC11 drop datafile '/oracle/C11/psapc11/dat.data15'
Best regards
Baran

Similar Messages

Drop one datafile from Tablespace

Hi,
I have 9i Database on Linux. I want to drop one datafile from tablespace. I have tried to drop datafile through following command but it gave no effect.
alter database datafile <datafile name> offline drop;
What should i have to do for dropping datafile?
Do the needful
Thankx in advance.

Hi
since you dont specify the database version or if you have it setup as archivelog or noarchivelog mode, i paste the drop specs for dropping a datafile, from SQL Reference manual of 9i
DROP If the database is in NOARCHIVELOG mode, you must specify the DROP
clause to take a datafile offline. However, the DROP clause does not remove the
datafile from the database. To do that, you must drop the tablespace in which the
datafile resides. Until you do so, the datafile remains in the data dictionary with the
status RECOVER or OFFLINE.
If the database is in ARCHIVELOG mode, Oracle ignores the DROP keyword.
Regards
Message was edited by:
pcambra

DROP DATAFILE FROM A TABLESPACE

What is the difference between "ALTER TABLESPACE DROP DATAFILE ..." and "ALTER DATABASE DATAFILE ... OFFLINE DROP"?
I read the Oracle document before, it tolds me that the "ALTER DATABASE DATAFILE ... OFFLINE DROP" is not really drop data file. But, does the "ALTER TABLESPACE DROP DATAFILE ..." really drop data file?

"ALTER DATABASE DATAFILE ... OFFLINE DROP"
will take datafile offline to drop it later. In this case your control file will need to be recreated to de-link the datafile from database.
From 10g onwards you can ALTER TABLESPACE DROP DATAFILE... but in this case datafile should not contain any data in it.

Drop datafile from a offline tablespace

We are running oracle 9.2 on windows.
Out of the 3 datafiles in a non-system tablespace A, one datafile A-DF1 was accidently droped from the file system by our DBA.
The other two datafiles were brought online by using the ALTER DATABASE RECOVER command by bringning the database in mount phase.
Now we want to remove that datafile A-DF1 from the tablespace and bring that tablespace online.
The database is not in archive mode and no cold backup was present.
The solution that we want to try is:
1-drop the tablespace A without dropping the datafiles
2-create a new tablespace and reuse those datafiles
3-assign this new tablespace to the affected user
Would this work? Do you have any other safe solution for this problem?
thanks
Imran

Hi..
Your solution is a wrong solution.
1. I guess, that the tablespace A won't be a empty tablespace.As, the objects are present in the tablespace you can't drop the tablespace without dropping its contents.You will have to use *DROP TABLESPACE <tbs_name> INCLUDING CONTENTS; -- This will drop all the contents.
2. Do, you have a export backup, or any kind of backup.As the database is in no archivelog mode, you won't be able to do complete recovery.
3. Take the datafile A-DF1 OFFLINE and keep the tablespace online. -- alter database datafile 'datafile_name' offline;
If you don't have any kind of backup, the data is LOST.
Anand

Need to drop datafile from my undo tablespace

I have a undo tablespace and it has 2 datafiles. i would like to drop one datafile.
befor i am droping this datafile i am going to bring this file to offline and i got this message: ORA--01145 offline immediate disallowed unless media recovery enable.
can someone tell me how i can safly do it without any problem.
Thanks

An undo tablespace can be dropped like any other tablespace, but not until all transactions within the tablespace are complete. First, specify a new undo tablespace as in the previous example. To see if the tablespace has any pending transactions, run the following query:
SQL> select rn.name, rs.status
2 from v$rollname rn, v$rollstat rs
3 where rn.name in
4 (select segment_name from dba_segments
5 where tablespace_name = 'UNDOTBS')
6 and rn.usn = rs.usn
7 ;

Drop a datafile from physical standby's control file

Hi,
I am trying to create a physical standby database for my production...
1) I have taken cold backup of my primary database on 18-Nov-2013...
2) I added a datafile on 19-nov-2013 ( 'O:\ORADATA\SFMS\SFMS_DATA4.DBF' )
3) Standby control file was generated on 20-ov-2013 (today) after shutting down and then mounting the primary database...
When i try to recover the newly setup standby using archive files, i am getting the following error (datafile added on 19th Nov is missing)
SQL> recover standby database;
ORA-00283: recovery session canceled due to errors
ORA-01110: data file 39: 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ORA-01157: cannot identify/lock data file 39 - see DBWR trace file
ORA-01110: data file 39: 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
How to overcome this situation...
Can i delete the entry for the newly added datafile from the backup control file ?
When i tried to delete datafile using "alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF';", it is showing that database should be open..
SQL> alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ERROR at line 1:
ORA-01109: database not open
SQL> show parameter STANDBY_FILE_MANAGEMENT
NAME                                 TYPE        VALUE
standby_file_management              string      AUTO
SQL> alter system set STANDBY_FILE_MANAGEMENT=manual;
System altered.
SQL> show parameter STANDBY_FILE_MANAGEMENT
NAME                                 TYPE        VALUE
standby_file_management              string      MANUAL
SQL> alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ERROR at line 1:
ORA-01109: database not open
Regards,
Jibu

Jibu wrote:
Hi,
I am trying to create a physical standby database for my production...
1) I have taken cold backup of my primary database on 18-Nov-2013...
2) I added a datafile on 19-nov-2013 ( 'O:\ORADATA\SFMS\SFMS_DATA4.DBF' )
3) Standby control file was generated on 20-ov-2013 (today) after shutting down and then mounting the primary database..
Hi,
What is your version?
If you added new datafile or created new tablespace, take backup again for restore new created standby database.
If your standby database running well, DG configuration success, then this datafile will create on standby side, too.
Set STANDBY_FILE_MANAGEMENT=AUTO best practice.
When i try to recover the newly setup standby using archive files, i am getting the following error (datafile added on 19th Nov is missing)
SQL> recover standby database;
ORA-00283: recovery session canceled due to errors
ORA-01110: data file 39: 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ORA-01157: cannot identify/lock data file 39 - see DBWR trace file
ORA-01110: data file 39: 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
How to overcome this situation...
Can i delete the entry for the newly added datafile from the backup control file ?
Not need any delete datafile from standby side, you must recreate standby database, or you can take RMAN backup and restore to standby side again.
When i tried to delete datafile using "alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF';", it is showing that database should be open..
SQL> alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ERROR at line 1:
ORA-01109: database not open
SQL> show parameter STANDBY_FILE_MANAGEMENT
NAME                                 TYPE        VALUE
standby_file_management              string      AUTO
SQL> alter system set STANDBY_FILE_MANAGEMENT=manual;
System altered.
SQL> show parameter STANDBY_FILE_MANAGEMENT
NAME                                 TYPE        VALUE
standby_file_management              string      MANUAL
SQL> alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
alter tablespace SFMS_BR_DATA drop datafile 'O:\ORADATA\SFMS\SFMS_DATA4.DBF'
ERROR at line 1:
ORA-01109: database not open
It is not logical, Physical standby must be bit-for-bit same with Primary database.
Regards
Mahir M. Quluzade

Droping a datafile from a tablespace

I want to drop a datafile from a tablespace by using the query
SQL> alter tablespace TS1 drop datafile 'OS path\df1';
This query drops the datafile. But physically the datafile is present in the OS path. how to delete the datafile completely from the disk.

Version:-
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL>
Although it's dropped on database level, I can't delete.If dropped data file from ORACLE, it deletes from OS level too. By any other processes being locked like antivirus and so on?
SQL> select file_name from dba_data_files where tablespace_name='USERS';
FILE_NAME
C:\ORACLE\ORADATA\ORCL\USERS01.DBF
C:\ORACLE\ORADATA\ORCL\USERS02.DBF
SQL> alter tablespace users add datafile 'c:\oracle\oradata\orcl\users03.dbf' size 10m;
Tablespace altered.
SQL> host
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\bn2676>cd c:\Oracle\oradata\orcl
c:\Oracle\oradata\orcl>dir users*
Volume in drive C is System
Volume Serial Number is 1853-3E21
Directory of c:\Oracle\oradata\orcl
02/15/2012 11:25 PM         5,251,072 USERS01.DBF
02/16/2012 09:04 PM        10,493,952 USERS02.DBF
02/16/2012 09:05 PM        10,493,952 USERS03.DBF
               3 File(s)     26,238,976 bytes
               0 Dir(s) 177,196,707,840 bytes free
c:\Oracle\oradata\orcl>exit
SQL> alter tablespace users drop datafile 'c:\oracle\oradata\orcl\users03.dbf';
Tablespace altered.
SQL> select file_name from dba_data_files where tablespace_name='USERS';
FILE_NAME
C:\ORACLE\ORADATA\ORCL\USERS01.DBF
C:\ORACLE\ORADATA\ORCL\USERS02.DBF
SQL> host
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\bn2676>cd c:\Oracle\oradata\orcl\
c:\Oracle\oradata\orcl>dir user*
Volume in drive C is System
Volume Serial Number is 1853-3E21
Directory of c:\Oracle\oradata\orcl
02/15/2012 11:25 PM         5,251,072 USERS01.DBF
02/16/2012 09:04 PM        10,493,952 USERS02.DBF
               2 File(s)     15,745,024 bytes
               0 Dir(s) 177,207,398,400 bytes free
c:\Oracle\oradata\orcl>

Question about ALTER TABLESPACE add/drop datafile

Good afternoon,
As an exercise, I created a tablespace STORETABS and added a datafile to it using the command:
SQL> alter tablespace storetabs add datafile 'e:/storetabs3.dbf' size 50M;This step succeeded. A new file was created in the root of e: as expected.
Following that command, I issued:
SQL> alter tablespace storetabs drop datafile 'e:/storetabs3.dbf';
Tablespace altered.The command succeeded. However, the file *'e:/storetabs3.dbf'* was not removed. After re-reading the documentation found at http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_3002.htm, I get the impression that removing the O/S file itself is something that always needs to be done manually.
The question: Am I correct that there is no option to cause the "alter tablespace <tablespace> drop datafile <datafilename>" to delete the O/S file ? In other words, must the O/S file always be manually deleted as a separate step ?
Thank you for your help,
John.

I believe in windows directory paths used backslash and not forward slash.
You can argue why oracle does not give error, either while creating or while dropping ;)
SQL> select * from v$version ;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL> select tablespace_name, file_name from dba_data_files ;
TABLESPACE_NAME
FILE_NAME
USERS
/u01/app/oracle/oradata/orcl/users01.dbf
UNDOTBS1
/u01/app/oracle/oradata/orcl/undotbs01.dbf
SYSAUX
/u01/app/oracle/oradata/orcl/sysaux01.dbf
SYSTEM
/u01/app/oracle/oradata/orcl/system01.dbf
EXAMPLE
/u01/app/oracle/oradata/orcl/example01.dbf
SCOTT_TBS
/home/oracle/scott_f1.dat
6 rows selected.
SQL> !ls -l scott_f1.dat
-rw-r----- 1 oracle oinstall 276832256 Sep 11 21:15 scott_f1.dat
SQL> alter tablespace scott_tbs add datafile '/home/oracle/scott_f2.dat' size 10M ;
Tablespace altered.
SQL> !ls -l scott_*.dat
-rw-r----- 1 oracle oinstall 276832256 Sep 11 21:15 scott_f1.dat
-rw-r----- 1 oracle oinstall 10493952 Sep 11 21:18 scott_f2.dat
SQL> alter tablespace scott_tbs drop datafile '/home/oracle/scott_f2.dat' ;
Tablespace altered.
SQL> !ls -l scott*.dat
-rw-r----- 1 oracle oinstall 276832256 Sep 11 21:15 scott_f1.dat

Can I Drop a datafile from UNDOTBS

Hi!!!!
I want to drop a datafile from UNDOTBS . can I Drop it.
If yes then how to drop ? what is the effect of it on database?
If anybody knows the the answer then Pls reply..

You can do this provided test it before doing it in production
Steps.
1. Create a new Undo tablespace
2. Shutdown the database
3. Change the parameter UNDO_TABLESPACE to the newly created undo tablespace
4. Start the database
5. Do whatever you want with the old undo tablespace.

How to move a specific tablespace datafile from one directory to another

Database: 10.2.0.1
OS : Generic
Problem Description : How to move a specific tablespace datafile from one directory to another considering that the database is on Oracle Dataguard setup
** Oracle is working on this issue, but in parallel is opening the topic to the Community so that Community members can add their perspective, experience or knowledge. This will further enhance all knowledge bases including My Oracle Support and My Oracle Support Communities **
Edited by: ram_orcl on 16-Aug-2010 21:21

Dear ram_orcl,
Please follow the procedures here;
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14239/manage_ps.htm#i1034172
8.3.4 Renaming a Datafile in the Primary Database
When you rename one or more datafiles in the primary database, the change is not propagated to the standby database. Therefore, if you want to rename the same datafiles on the standby database, you must manually make the equivalent modifications on the standby database because the modifications are not performed automatically, even if the STANDBY_FILE_MANAGEMENT initialization parameter is set to AUTO.
The following steps describe how to rename a datafile in the primary database and manually propagate the changes to the standby database.
   1.
      To rename the datafile in the primary database, take the tablespace offline:
      SQL> ALTER TABLESPACE tbs_4 OFFLINE;
   2.
      Exit from the SQL prompt and issue an operating system command, such as the following UNIX mv command, to rename the datafile on the primary system:
      % mv /disk1/oracle/oradata/payroll/tbs_4.dbf
      /disk1/oracle/oradata/payroll/tbs_x.dbf
   3.
      Rename the datafile in the primary database and bring the tablespace back online:
      SQL> ALTER TABLESPACE tbs_4 RENAME DATAFILE      2> '/disk1/oracle/oradata/payroll/tbs_4.dbf'
        3> TO '/disk1/oracle/oradata/payroll/tbs_x.dbf';
      SQL> ALTER TABLESPACE tbs_4 ONLINE;
   4.
      Connect to the standby database, query the V$ARCHIVED_LOG view to verify all of the archived redo log files are applied, and then stop Redo Apply:
      SQL> SELECT SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;
      SEQUENCE# APP
      8 YES
      9 YES
      10 YES
      11 YES
      4 rows selected.
      SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
   5.
      Shut down the standby database:
      SQL> SHUTDOWN;
   6.
      Rename the datafile at the standby site using an operating system command, such as the UNIX mv command:
      % mv /disk1/oracle/oradata/payroll/tbs_4.dbf /disk1/oracle/oradata/payroll/tbs_x.dbf
   7.
      Start and mount the standby database:
      SQL> STARTUP MOUNT;
   8.
      Rename the datafile in the standby control file. Note that the STANDBY_FILE_MANAGEMENT initialization parameter must be set to MANUAL.
      SQL> ALTER DATABASE RENAME FILE '/disk1/oracle/oradata/payroll/tbs_4.dbf'
        2> TO '/disk1/oracle/oradata/payroll/tbs_x.dbf';
   9.
      On the standby database, restart Redo Apply:
      SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
        2> DISCONNECT FROM SESSION;
If you do not rename the corresponding datafile at the standby system, and then try to refresh the standby database control file, the standby database will attempt to use the renamed datafile, but it will not find it. Consequently, you will see error messages similar to the following in the alert log:
ORA-00283: recovery session canceled due to errors
ORA-01157: cannot identify/lock datafile 4 - see DBWR trace file
ORA-01110: datafile 4: '/Disk1/oracle/oradata/payroll/tbs_x.dbf'Hope That Helps.
Ogan

Cannot drop old undo tablespace. Cause: active rollback segment

dear all.
db: oracle 10.2.0.1
os: rhel as version 5 64 bits.
This is a testing database. And my database is online and open. But i can free the external usb disk that contains my ols undotbs.
I want to drop old undo tablespace but this is not possible.
1.- In order to open my database i had my datafile( '/mnt/hdext/back_plelds/undotbs02.dbf') offline drop, and then i can to open my database.
2.- When i try to delete my old undo tablespace im getting this error:
SQL> drop tablespace undotbs1 including contents and datafiles;
drop tablespace undotbs1 including contents and datafiles
ERROR at line 1:
ORA-01548: active rollback segment '_SYSSMU1$' found, terminate dropping
tablespace
3.- My default undo_tablespace is another that i was created before step 1.
SQL> sho parameter undo_ta
NAME TYPE VALUE
undo_tablespace string UNDOTMP
SQL>
Well i search in metalink ORA-01548 code error and in 18947.1 doc whows me that the solution is:
Action: Shut down instances that use the active rollback segments in the
tablespace and then drop the tablespace.
4.- I try to shutdown but im getting:
SQL> shutdown immediate;
ORA-00376: file 10 cannot be read at this time
ORA-01110: data file 10: '/mnt/hdext/back_plelds/undotbs02.dbf'
SQL>
This /mnt/hdext is an external USB disk and i have all permissions. I exported tables without any problem and i can read all files.
i search un metalink again ora codes (ORA-00376 ORA-01110) and the doc id: 427801.1 shows in the solution:
Drop the old undo tablespace instead of making it offline.
but when i try to drop the tablespace it shows the error describe in the step 2.
Facts:
- my tablespace UNDOTBS1 is ONLINE. I put in offline and this is not the solution.
- This is the status of my rollback segments:
SQL> select segment_name, status from dba_rollback_segs where
2 tablespace_name='UNDOTBS1';
SEGMENT_NAME STATUS
_SYSSMU1$                      NEEDS RECOVERY
_SYSSMU2$                      NEEDS RECOVERY
_SYSSMU3$                      NEEDS RECOVERY
_SYSSMU4$                      NEEDS RECOVERY
_SYSSMU5$                      NEEDS RECOVERY
_SYSSMU6$                      NEEDS RECOVERY
_SYSSMU7$                      NEEDS RECOVERY
_SYSSMU8$                      NEEDS RECOVERY
_SYSSMU9$                      NEEDS RECOVERY
_SYSSMU10$                     NEEDS RECOVERY
_SYSSMU11$                     OFFLINE
SEGMENT_NAME STATUS
_SYSSMU12$                     OFFLINE
12 rows selected.
SQL>
- I have the note (Unable to drop und tablespace In this article describe the problem but this is not the same. The difference is that i cannot drop the rollback segment that describe in step 2.
SQL> drop rollback segment "_SYSSMU1$";
drop rollback segment "_SYSSMU1$"
ERROR at line 1:
ORA-30025: DROP segment '_SYSSMU1$' (in undo tablespace) not allowed
in metalink the doc id: 173696.1 shows the solution:
Action:     Check the undo segment name and reissue statement if necessary.
i cannot drop the rollback_segment
What can i do ???
thanks a lot.

in step 4 did you try with shutdown abort?
If its still does not work then create another new table space with new file and then swtich to that tablespace http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/undo.htm#sthref1504Khurram

Recovering a datafile from backup in different server

Hi All,
I usually take hot backup of datafiles to different server like this because i dont have enough space in same server. I
SQL> alter tablespace XXXX begin backup;
host scp /bu1/oradaTA/XXXXX/XXXXX [email protected]:/db1dw/oradata/backup/dec2010/XXXX
alter tablespace OPS end backup;
If i want to recover the datafile can i normally do the offline drop of that datafile and copy the datafile from backup which is in differnet server thorugh scp and make the datafile online??? and the database is in archivelog mode but i dont care abt the log files. i just need to recover the datafile as it was from last backup.
or do we need to use any recover datafile commands?? if need to use any recover datafile command from where it will recover the datafile??
i dont have any scripts for backup or recovery , i just take manual scp of the datafiles.
Help plzz, thanks in advance.....

SQL> alter tablespace XXXX begin backup;
host scp /bu1/oradaTA/XXXXX/XXXXX [email protected]:/db1dw/oradata/backup/dec2010/XXXX
alter tablespace OPS end backup;What is the version you are using? is it 9i if not you can peform backup at database level instead of tablespace level.
If i want to recover the datafile can i normally do the offline drop of that datafile and copy the datafile from backup which is in differnet server thorugh scp and make the datafile online??? and the database is in archivelog mode but i dont care abt the log files. i just need to recover the datafile as it was from last backup.Why offline drop to recover? Are you sure what are you doing?
or do we need to use any recover datafile commands?? if need to use any recover datafile command from where it will recover the datafile??1) alter system switch logfile;
2) select max(sequence#) from v$archived_log;
For Ex:
Sequence -- 100
3) alter database begin backup;
4) copy all the datafiles to another server(bcoz you not have space in same server)
5) alter database end backup;
6) select max(sequence#) from v$archived_log;
For Ex:
Sequence -- 110
Then copy these generated 10 archives to new server also.

Dropping datafiles

Can I drop datafiles individually, or do I need to drop the entire tablespace? The ALTER TABLESPACE command doesn't appear to have a drop datafile clause. I've dropped enough objects in the tablespace to reduce the amount of space used to 1%, but there are still a dozen objects including tables and indexes. There are also references to and from these objects to objects in other tablespaces.
Kevin Tyson

ALTER DATABASE dbname
DATAFILE filename OFFLINE DROP;
Does not actually drop datafiles. It only takes them offline if the database is in noarchivelog mode.
However, that section in the SQL reference goes on to say...
"However, the DROP clause does not remove the datafile from the database. To do that, you must drop the tablespace in which the datafile resides. "
Which answers my question.

Drop datafiles

HI,
Oracle 10.2.0.4 SUSe 10 Archivelog mode
The datafile mount point is 100% used. So I had to shutdown the DB and mount it. I want to make some space in the mount space and delete unwanted datafiles from the database. Since now i am in mount stage how can i delete the datafiles from the DB. And make space on the server.
Please suggest

hi,
post
select file_name,tablespace_name,user_bytes/10024/1024,bytes/1024/1024,maxbytes/1024/1024 from dba_data_files;check for any used datafiles, if you really you dont want you can go ahead to dellete,
drop tablespace tbs1 including contents and datafiles;Thanks

After offline drop datafile, v$datafile.status='RECOVER'

OS version:
[oracle@base ~]$ uname -a
Linux base.no.sohu.com 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
DB version:
SQL> select version from v$instance;
VERSION
9.2.0.1.0Here is my steps,
SQL>alter database datafile '/usr/oradata/bill/soq05.dbf' offline;
Database altered.
SQL>alter database datafile '/usr/oradata/bill/soq05.dbf' offline drop;
Database altered.Cause there is nothing errors generated, I thought the commands executed sucessfully. But it's not.
SQL> SELECT NAME,STATUS FROM v$datafile WHERE NAME='/usr/oradata/bill/soq05.dbf';
NAME                                     STATUS
/usr/oradata/bill/soq05.dbf              RECOVER
SQL> SELECT FILE#, STATUS, ERROR, RECOVER, TABLESPACE_NAME, NAME
2 FROM   V$DATAFILE_HEADER
3 WHERE RECOVER = 'YES' OR     (RECOVER IS NULL AND ERROR IS NOT NULL);
     FILE# STATUS ERROR                RECOVER              TABLESPACE_NAME                NAME
        18 OFFLINE                      YES                  SOQ                            /usr/oradata/bill/soq05.dbf
[oracle@base ~]$ ll /usr/oradata/bill/soq05.dbf
-rw-r----- 1 oracle oinstall 1073750016 Aug 28 17:39 /usr/oradata/bill/soq05.dbfThe datafile haven't been droped successfully and its status changed to 'RECOVER'. Also, I can't online it now.
What should I do to make this datafile droped or at least make it online/offline? What I am worry is the database will be failed to restart because of this 'RECOVER' datafile.
Thanks very much!
Satine

Hey Werner,
Thanks very much for your help.
The reason I tried to drop the datafile is after I add the datafile to tablespace, I found the datafile failed to be created on the standby side because the parameter "db_file_name_convert"'s value were incorrect. When I created the datafile on primary side, the value of "db_file_name_convert" was,
SQL> select name,value from v$parameter where name='db_file_name_convert';
NAME                           VALUE
db_file_name_convert           /home/oracle/bill/oradata/bill, /U02/bill/oradata/billIt should be VALUE='/usr/oradata/bill','/U02/bill/oradata/bill'. For now the datafile's status on standby side is,
SQL> SELECT name,status FROM V$DATAFILE where file#=18;
NAME                                               STATUS
/U02/bill/product/9.2.0.1/dbs/UNNAMED00018         RECOVERIf the datafile on primary side could been recovered successfully, is there a way to make the datafile on standby side also correct?
Thanks
Satine

Drop datafile from tablespace

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