Cannot drop undo tablespace

Hello:
I've created a new undo tablespace undotbs2. I've set it to the default undo tablespace. When I've tried to drop the old one, I get the following error:
SQL> conn / as sysdba
Connected.
SQL> DROP TABLESPACE undotbs1 INCLUDING CONTENTS AND DATAFILES;
DROP TABLESPACE undotbs1 INCLUDING CONTENTS AND DATAFILES
ERROR at line 1: ORA-01548: active rollback segment '_SYSSMU7$' found, terminate dropping tablespace
This is a production database. The service is down because the partition with the Oracle tablespaces: system, undo, temp, etc is full.
After shutting down the database the problem persist: I cannot drop the old undo tablespace because of the same error.
I've followed the note 1321093.1. Here the query results:
Select segment_name, status, tablespace_name, rs.segment_id
from dba_rollback_segs rs
where status not in ('ONLINE','OFFLINE');
_SYSSMU7$ PARTLY AVAILABLE UNDOTBS1 7
SELECT KTUXEUSN, KTUXESLT, KTUXESQN, /* Transaction ID */ KTUXESTA Status, KTUXECFL Flags
FROM x$ktuxe
WHERE ktuxesta !='INACTIVE' AND ktuxeusn =7;
7 47 382687 ACTIVE DEAD
SELECT LOCAL_TRAN_ID,GLOBAL_TRAN_ID,STATE,MIXED,COMMIT# FROM DBA_2PC_PENDING;
No rows
SELECT LOCAL_TRAN_ID,IN_OUT,DATABASE,INTERFACE FROM dba_2pc_neighbors;
No rows
As you can see, there is no pending transactions. No application is connected to the database (service is down), however the database is appling rollbacks since 2 days.
A lot of archivelogs are being created at rolling back (30 GB archivelogs per hour). Here a tail of the alertlog file:
Wed Apr 17 06:19:53 2013
Thread 1 advanced to log sequence 7382
Current log# 5 seq# 7382 mem# 0: /ora2/origlogs/webfrbr/redo05_m1.log
Current log# 5 seq# 7382 mem# 1: /ora3/mirrorlogs/webfrbr/redo05_m2.log
Wed Apr 17 06:21:16 2013
Thread 1 advanced to log sequence 7383
Current log# 6 seq# 7383 mem# 0: /ora2/origlogs/webfrbr/redo06_m1.log
Current log# 6 seq# 7383 mem# 1: /ora3/mirrorlogs/webfrbr/redo06_m2.log
Wed Apr 17 06:22:41 2013
Thread 1 advanced to log sequence 7384
Current log# 4 seq# 7384 mem# 0: /ora2/origlogs/webfrbr/redo04_m1.log
Current log# 4 seq# 7384 mem# 1: /ora3/mirrorlogs/webfrbr/redo04_m2.log
Wed Apr 17 06:24:02 2013
Thread 1 advanced to log sequence 7385
Current log# 5 seq# 7385 mem# 0: /ora2/origlogs/webfrbr/redo05_m1.log
Current log# 5 seq# 7385 mem# 1: /ora3/mirrorlogs/webfrbr/redo05_m2.log
Wed Apr 17 06:25:24 2013
Thread 1 advanced to log sequence 7386
Current log# 6 seq# 7386 mem# 0: /ora2/origlogs/webfrbr/redo06_m1.log
Current log# 6 seq# 7386 mem# 1: /ora3/mirrorlogs/webfrbr/redo06_m2.log
Wed Apr 17 06:26:46 2013
Thread 1 advanced to log sequence 7387
Current log# 4 seq# 7387 mem# 0: /ora2/origlogs/webfrbr/redo04_m1.log
Current log# 4 seq# 7387 mem# 1: /ora3/mirrorlogs/webfrbr/redo04_m2.log
Oracle Database - Enterprise Edition 10.2.0.3
Linux x86-64 Oracle Linux 5
Please, consider the output of the following queries too:
select * from V$FAST_START_TRANSACTIONS
USN 7 -- Undo segment number of the transaction
SLT 47 -- Slot within the rollback segment
SEQ 382687 -- Incarnation number of the slot
STATE RECOVERING --
UNDOBLOCKSDONE 0 -- Number of undo blocks completed on the transaction
UNDOBLOCKSTOTAL 2079151 -- Total number of undo blocks that need recovery
PID 15 -- ID of the current server it has been assigned to
CPUTIME 1153 -- Time for which recovery has progressed (in seconds)
PARENTUSN 0 -- Undo segment number of the parent transaction in PDML
PARENTSLT 0 -- Slot of the parent transaction in PDML
PARENTSEQ 0 -- Sequence number of the parent transaction in PDML
XID 07002F00DFD60500 -- Transaction ID
PXID 0000000000000000 -- Parent transaction ID
RCVSERVERS 1 -- Number of servers used in the last recovery
select * from x$ktuxe where ktuxecfl = 'DEAD';
ADDR 00002B3E808B9BD8
INDX 145
INST_ID 1
KTUXEUSN 7
KTUXESLT 47
KTUXESQN 382687
KTUXERDBF 2
KTUXERDBB 2080076
KTUXESCNB 424110769
KTUXESCNW 0
KTUXESTA ACTIVE
KTUXECFL DEAD
KTUXEUEL 3739
KTUXEDDBF 0
KTUXEDDBB 0
KTUXEPUSN 0
KTUXEPSLT 0
KTUXEPSQN 0
KTUXESIZ 2079151
select * from v$fast_start_servers;
RECOVERING 0 15 07002F00DFD60500
IDLE 0 16 0000000000000000
IDLE 0 17 0000000000000000
IDLE 0 18 0000000000000000
IDLE 0 19 0000000000000000
IDLE 0 20 0000000000000000
IDLE 0 21 0000000000000000
IDLE 0 22 0000000000000000
IDLE 0 25 0000000000000000
IDLE 0 26 0000000000000000
IDLE 0 27 0000000000000000
IDLE 0 28 0000000000000000
IDLE 0 29 0000000000000000
IDLE 0 30 0000000000000000
IDLE 0 31 0000000000000000
IDLE 0 32 0000000000000000
Any ideas to solve this issue?
Thank you in advance
Edited by: albrotar on Apr 17, 2013 1:48 AM
Edited by: albrotar on Apr 17, 2013 1:49 AM
Edited by: albrotar on Apr 17, 2013 1:51 AM
Edited by: albrotar on Apr 17, 2013 1:52 AM
Edited by: albrotar on Apr 17, 2013 1:54 AM

I've found some errors in alert log file occurred at shutting down the database:
+...+
Control autobackup written to DISK device
handle '/orabck/rman/webfrbr/ora_cfc-3587726327-20130414-00'
Completed: CREATE UNDO TABLESPACE undotbs2 DATAFILE '/orabck/undo/undotbs02.dbf'
SIZE 500M reuse autoextend ON NEXT 5M maxsize 32767M
Sun Apr 14 15:46:43 2013
Successfully onlined Undo Tablespace 5.
Undo Tablespace 1 moved to Pending Switch-Out state.
*** active transactions found in undo tablespace 1 during switch-out.
Sun Apr 14 15:46:44 2013
ALTER SYSTEM SET undo_tablespace='UNDOTBS2' SCOPE=BOTH;
Sun Apr 14 16:11:42 2013
ALTER ROLLBACK SEGMENT "_SYSSMU7$" offLINE
Sun Apr 14 16:11:42 2013
Completed: ALTER ROLLBACK SEGMENT "_SYSSMU7$" offLINE
Sun Apr 14 16:12:36 2013
DROP TABLESPACE undotbs1 INCLUDING CONTENTS AND DATAFILES
Sun Apr 14 16:12:36 2013
+...+
Thread 1 advanced to log sequence 5107
Current log# 4 seq# 5107 mem# 0: /ora2/origlogs/webfrbr/redo04_m1.log
Current log# 4 seq# 5107 mem# 1: /ora3/mirrorlogs/webfrbr/redo04_m2.log
Sun Apr 14 19:00:28 2013
Stopping background process CJQ0
Sun Apr 14 19:00:29 2013
Stopping background process QMNC
Sun Apr 14 19:00:31 2013
Stopping background process MMNL
Sun Apr 14 19:00:32 2013
Stopping background process MMON
Sun Apr 14 19:00:34 2013
Shutting down instance (immediate)
License high water mark = 31
Sun Apr 14 19:00:34 2013
Stopping Job queue slave processes
Sun Apr 14 19:00:34 2013
Job queue slave processes stopped
All dispatchers and shared servers shutdown
Sun Apr 14 19:00:42 2013
ALTER DATABASE CLOSE NORMAL
Sun Apr 14 19:04:28 2013
+...+
Thread 1 advanced to log sequence 5118
Current log# 6 seq# 5118 mem# 0: /ora2/origlogs/webfrbr/redo06_m1.log
Current log# 6 seq# 5118 mem# 1: /ora3/mirrorlogs/webfrbr/redo06_m2.log
Sun Apr 14 20:11:21 2013
Errors in file /ora1/admin/webfrbr/bdump/webfrbr_smon_4629.trc:
+ORA-07445: exception encountered: core dump [_intel_fast_memcpy.A()+10] [SIGSEGV] [Invalid permissions for mapped object] [0x2B6B66003000] [] []+*
Sun Apr 14 20:11:21 2013
Errors in file /ora1/admin/webfrbr/bdump/webfrbr_smon_4629.trc:
ORA-00600: internal error code, arguments: [999], [0x107C14015], [], [], [], [], [], []*
+ORA-07445: exception encountered: core dump [_intel_fast_memcpy.A()+10] [SIGSEGV] [Invalid permissions for mapped object] [0x2B6B66003000] [] []+*
Sun Apr 14 20:11:22 2013
+...+
Sun Apr 14 20:11:48 2013
Errors in file /ora1/admin/webfrbr/bdump/webfrbr_pmon_4617.trc:
ORA-00474: SMON process terminated with error
Sun Apr 14 20:11:48 2013
+...+
The instance could start up, but after this, it is recovering undo and generating redo since 2 days

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Guys,
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Charlov wrote:
Guys,
I want to create a new undo tablespace and drop the old one.
I followed the below steps, but could not drop it
create undo tablespace UNDOTBS datafile '/ora01/oradata/DEVTDB/undotbs.dbf' size 100m AUTOEXTEND ON MAXSIZE 5G;
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DROP TABLESPACE UNDOTBS1 INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS;
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I am using oracle 10.2.0.4G on Linux Redhat.
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Drop undo tablespace

Tive que criar uma segunda undo tablespace, mas agora não preciso mais dela. Posso apagá-la normalmente com um drop tablespace ou tenho que fazer alguma verificação antes? Ela não é mais a undo tablespace da instância.

Tive que criar uma segunda undo tablespace, mas agora
não preciso mais dela. Posso apagá-la normalmente com
um drop tablespace ou tenho que fazer alguma
verificação antes? Ela não é mais a undo tablespace
da instância.Writing in a language different from english greatly reduces your chances to receive an answer. The official forum language is english. People here have made a great effort to reply to your post. You could try those on-line translators to translate from Portuguese to English, instead of letting the posters translate your request.
On the other hand, once you have created a second undo tablespace which is no longer requried, just drop the tablespace, assuming you have not declared this as your database undo tablespace at the UNDO_TABLESPACE instance parameter. You may issue the command:
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and you are done.
~ Madrid
http://hrivera99.blogspot.com/

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Hi,
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Name Status
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_SYSSMU33$      UNKNOWN
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a.usn,
a.name,
b.status,
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d.addr,
e.sid,
e.serial#,
e.username,
e.program,
e.machine,
e.osuser
FROM
v$rollname a,
v$rollstat b,
dba_rollback_segs c,
v$transaction d,
v$session e
WHERE
a.usn=b.usn AND
a.name=c.segment_name AND
a.usn=d.xidusn AND
d.addr=e.taddr AND
b.status='PENDING OFFLINE';
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Cannot drop tablespace

I cannot drop the tablespace create earlier today by me. The tablespace have 2 files and they are empty. Here is the case.
Thansk a lot,mj
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
SYSTEM
UNDOTBS1
SYSAUX
TEMP
ADDR_IX2
CFG_DATA
CFG_IX
TS_ATTR_IX
TS_Nums_DT
TS_NAME_DT
TS_INSERT_ONLY_DT
11 rows selected.
Elapsed: 00:00:00.01
SQL> drop tablespace TS_Nums_DT INCLUDING CONTENTS and datafiles;
drop tablespace TS_Nums_DT INCLUDING CONTENTS and datafiles
ERROR at line 1:
ORA-00959: tablespace 'TS_NUMS_DT' does not exist

As Aron says, there may be other, non-printing, characters in the name. You can check this by running:
SELECT DUMP(tablespace_name)
FROM dba_tablespaces
WHERE tablespace_name like 'TS\_N%' ESCAPE '\'Which will give you the ascii values of the characters in the tablespace name like this:
SQL> SELECT DUMP(tablespace_name)
2 FROM dba_tablespaces
3 WHERE tablespace_name = 'ONECALL';
DUMP(TABLESPACE_NAME)
Typ=1 Len=7: 79,78,69,67,65,76,76
O N E C A L LHTH
John

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Hi Gurus,
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~ Madrid
http://hrivera99.blogspot.com/

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Hi,
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drop tablespace undotbs1 including contents and datafiles
delted file '/u04/oradata/sunshine/undotbs1.dbf'
deleted file '/u06/oradata/sunshine/undotbs1_1.dbf'
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THanks,
Harris.

Hi,
My Oracle version is 9.2.0.5 and i am running on Solaris 9. I have created a new UNDO tablespace UNDOTBS2 and dropped the old UNDO tablespace UNDOTBS1. After i issued the "drop tablespace UNDOTBS1 including contents and datafiles" it deleted the physical datafiles at the OS level too. I do not see any datafiles of the first dropped undo tablespace UNDOTBS1 in the directories specified i.e.,
'/u04/oradata/sunshine/undotbs1.dbf'
'/u06/oradata/sunshine/undotbs1_1.dbf'
So, the tablespace along with datafiles has been dropped (at the OS level too) with the "drop tablespace........" command itself. But, the file system still does not show the freed up space. I have altered the system to use the second undo tablespace UNDOTBS2 before dropping the first.
The second undo UNDOTBS2 has auto extend off, so there is no issue of this increasing to this much of size. The first undo tablespace that i dropped was around 15G of size and it has autoextend ON.
Any suggestions?
Thanks,
Harris.

Drop Temporary Tablespace!

Hi All,
I have tried dropping my old temporary tablespace TEMP after making new TEMP2 as default.
All the users (checked in dba_users) are using TEMP2 as default temporary tablespace.
Now, issue is when I am trying to take TEMP offline and dropping it some of the users are not able to open the forms.
Please suggest, is it necessary that I must do this activity after taking a proper downtime or I can do it in business hours.
Thanks,
Anchorage

It's done now!!!
Actually issue was
You cannot drop a tablespace if it contains any rollback segments holding active transactions.*
Try to check whether any one using the temp segments or not on query "v$sort_usage"*
If it returns the rows, the sessions are using the temp tablespace. Once the Sessions Closes then the the command execution will be completed, else you and go head and kill the session with respect to session Id.*
Which was been explained to me by Pavan in General Database Forum!
I have killed the active session and it was success!
Anchorage

Unable to drop und tablespace

Iam getting error when dropping undo tablespace
drop tablespace undotbs1 including contents and datafiles;+
ORA-01548: active rollback segment '_SYSSMU1$' found, terminate dropping tablespace+
Version 10.2
Thanks in Advance
Abk

as per the document
http://www.dba-oracle.com/t_fix_undo_log_corruption.htm
select
segment_name,
status
from
dba_rollback_segs
where
tablespace_name='undotbs1'
and
status = ‘NEEDS RECOVERY’;
_SYSSMU1$
_SYSSMU2$
_SYSSMU3$
_SYSSMU4$
_SYSSMU5$
_SYSSMU6$
_SYSSMU7$
_SYSSMU8$
_SYSSMU9$
_SYSSMU10$
_SYSSMU11$

Separate UNDO tablespace for each instance

Version: 10.2.0.4, 11.2.0.2
I've noticed that there is an UNDO tablespace for each instance in RAC. Since UNDO tablespace lies in the shared storage, isn't it better to have just one UNDO tablespace for all instances?

Max wrote:
Version: 10.2.0.4, 11.2.0.2
I've noticed that there is an UNDO tablespace for each instance in RAC. Since UNDO tablespace lies in the shared storage, isn't it better to have just one UNDO tablespace for all instances?Each instance in the RAC system can only use one undo tablespace at a time. In other words, instances cannot share undo tablespaces. Each instance in the cluster, being an independent transaction-processing environment, maintains its own UNDO area for undo management.
Either automatic undo management or rollback segment undo can be used to manage undo space. If the automatic rollback method will be used, set the global parameter undo_management to auto in the server parameter file, and set the undo_tablespace parameter to assign the undo tablespace to the instance.
The RAC system allows the creation and use of several undo tablespaces. When the instance is started, it uses the first available undo tablespace. A second instance will use another undo tablespace. Thus, each instance in a RAC system will have exclusive access to a particular undo tablespace at a given time. The undo tablespace cannot be shared among the instances at the same time. Only once an undo tablespace is released by an instance, it can be assigned to another instance. However, all instances can read blocks from any or all undo tablespaces for the purpose of constructing read-consistency images.
source:http://www.dba-oracle.com/real_application_clusters_rac_grid/undo_management.htm

Cannot drop undo tablespace

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