ORA-01562: failed to extend rollback segment

HI
I was searching the forum for an error when i came across one of the old post regarding the same issue. The link for that post is:
perfomance problem
Actually i am getting an error when i run a procedure in Oracle 8i database. Error states:
ORA-01562: failed to extend rollback segment number.....
Now in the link i mentioned above there was a reply by JES. In the reply he recommend not to use commit after every delete in the loop. Instead use one commit after the loop. This decreased the number of commits from 175000 (5 * 35000) to 1.
My questions is
1) How would it reduce the number of comments?
Can anyone explain to this point.

sorry it should be commit rather than 'comment'
Okay hoek i got the point but i m still confused. What my knowledge regarding rollback segment is that whenever we start a transaction using any DML a rollback segment starts to maintain unless we end the transaction using commit or rollback. So doing as
LOOP
DELETE.......
DELETE......
DELETE......
END LOOP
COMMIT
will keep on increasing the size of the rollback segment. In other words rollback segment will have to keep the snapshot of all the three DML's in the loop till the commit.
Instead if we do as
LOOP
DELETE.......
COMMIT
DELETE......
COMMIT
DELETE......
COMMIT
END LOOP
will keep the size of the rollback segment less than the above example because we are commiting after every DML thus releasing the space before the start of the next DML.
Don't you think the later can prevent us from ORA-01562 ?

Similar Messages

DAL Exception: ORA-01562: failed to extend rollback segment number 4

Hi,
in our application log, we got sometimes an error ORA-01562: failed to extend rollback segment number 4 and the application hangs and some transactions are blocked. checking the aler database file, we don't found this error but it's appearing often in our system.
would you lease advise what to do to avaoid this error, or is there a script to find oracle SQl where using too much rollback segment.
My configuration is : Oracle 10g r2 in linux SUSE.
thank you
Lucienot.

Hi,
Please refer MOS tech note *ORA-1562 and ORA-1650 Unable to Extend Rollback Segment [ID 1066542.6]*
thanks,
X A H E E R

CONS-10049: Consolidator Exception: ORA-01562: failed to extend rollback

CONS-10049: Consolidator Exception: ORA-01562: failed to extend rollback segment
number 5
ORA-01650: unable to extend rollback segment R04 by 256 in tablespace RBS
How does one calculate the size of the rollback segment so as to avoid the above error?

Hi,
Please refer MOS tech note *ORA-1562 and ORA-1650 Unable to Extend Rollback Segment [ID 1066542.6]*
thanks,
X A H E E R

Failed to extend Rollback Segment

Version of the database is
Oracle8i Enterprise Edition Release 8.1.7.0.0 - Production
I have a rollback tablespace that is 99%used and wen I am tryng to use DML statements to the database it is throwing the following error.
ORA-01562:FAILED TO EXTEND ROLLBACK SEGMENT 2
ORA-01650:UNABLE TO EXTEND ROLLBACK SEGMENT RBS01 BY 128 IN TABLESPACE
R
May I know how do I proceed now? Do I have to extend the tablespace or add a new datafile to the tablespace?

PK wrote:
Version of the database is
Oracle8i Enterprise Edition Release 8.1.7.0.0 - Production
I have a rollback tablespace that is 99%used and wen I am tryng to use DML statements to the database it is throwing the following error.
ORA-01562:FAILED TO EXTEND ROLLBACK SEGMENT 2
ORA-01650:UNABLE TO EXTEND ROLLBACK SEGMENT RBS01 BY 128 IN TABLESPACE
R
May I know how do I proceed now? Do I have to extend the tablespace or add a new datafile to the tablespace?
01562, 00000, "failed to extend rollback segment number %s"
// *Cause: Failure occurred when trying to extend rollback segment
// *Action: This is normally followed by another error message that caused
//        the failure. You may take the rollback segment offline to perform
//         maintainence. Use the alter rollback segment offline command
//         to take the rollback segment offline.
bcm@bcm-laptop:~$ oerr ora 1650
01650, 00000, "unable to extend rollback segment %s by %s in tablespace %s"
// *Cause: Failed to allocate an extent of the required number of blocks for
//          a rollback segment in the tablespace.
// *Action: Use ALTER TABLESPACE ADD DATAFILE statement to add one or more
//          files to the tablespace indicated.

ORA-1650: unable to extend rollback segment

Hi,
We have 20 RBS's and in our production instance we got very frequent alerts related to ORA-1650: unable to extend rollback segment continuously. When I looked for select STATUS from v$rollstat; I could see most of them are with FULL status. after couple of hours they disappeared and status became online.
How to avoid these type of alerts?
REgards

What version of Oracle?
If you are 9ir2 or later, you should be going to automatic undo management. Though it won't help your 'we cannot add space' restriction. That's not an Oracle problem, that's a corporate issue.
This problem may be caused by poor transaction design with too many processing doing too infrequent commits. That's not an Oracle problem either, that's a corporate/development issue.
So...you don't have an Oracle problem.
You can't stop the 1650s from occurring if you are unwilling to add space or address application issues. However, you can set up an email filter so that any emails containing ORA-01650 in the header or body get automatically sent to the trash.
<sarcasm>
If you can't solve a problem, then just ignore it!
</sarcasm>

How to extend rollback segment

Hi,
for a few days I've been getting the following messages:
ORA-01562: failed to extend rollback segment number 3
ORA-01650: unable to extend rollback segment RBS2 by 512 in tablespace RBS
after running a package which has always had no problems and where it's also been added a COMMIT after the insert statements inside the package.
DBAs have tried to increase the rollback segment but the problem is always the same.
Have you got some advice?
Thanks!

By adding a datafile in RBS tablespace.

Unable to extend rollback segment 0

I'm migrating a 7.3.4 database to 8.0.5 using MIG80 and i get messages:
ora-01562 Unable to extend rollback segment 0
ora-01528 max # extents <121> reached for rollback segment system
My tablespace system's original size is 120M, now I have it grown to 400M, also have my rbs tablespace grown to 200M, I'm using MULTIPLIER=30, i've migrated 2 databases same sized but this time does'n work.
Can you help me?
I4m kind of hurry, i have to migrate 7 databases by august 25.
Thanks

Dear friend
Create rollback segment with large
in size.
sql> set transaction use rollback segment 'Name of the roll'
suresh
null

Oracle error: Ora-01555 : snapshot too old: rollback segment number 1......

System Error: Unknown Database error (type qqdb_ResourceException) on WMS_WH1: Execute failed for SQL statement ............... error from database is: ORA-01555: snapshot too old: rollback segment number 1 with name "_SYSSMU1$" too small...
Any ideas ? Please help.
Thank you.

You either have
- an UNDO tablespace that is way too small (rollback segments that are too small); or
- an application that does way too many COMMITs (common with apps ported from SQL Server)
From the added info, I would guess that the Java program has a major loop and does processing on each of the values it gets in that loop. At the end of each turn in the loop, it does a commit. Then it tries to look at the next record in the master list. After a while (say around 388 loops ;-) ) it dies.
The reason is that when it looks for information in the master query, it needs to rebuild that information to the moment that query was initiated. It uses rollback (AKA undo) to rebuild that. But rollback is not guaranteed to exist after a commit (unless forced) and once a commit happens, that area can be reused. When it is reused, the information is no longer there to rebuild the row, and that raises an ORA-01555
Edited by: Hans Forbrich on Sep 11, 2009 3:44 PM

Query to find which past ses caused ORA-1652: unable to extend temp segment

Hi,
I m trying to get information on the sessions/sql query that have cause ORA-1652: unable to extend temp segment from past 2 days. Basically need to know which all sessions in past 2 days have caused ORA-1652: unable to extend temp segment.
I have generated the AWR report but not able to figure it out which sessions caused this error.
Thanks in advance

913410 wrote:
Hi,
I m trying to get information on the sessions/sql query that have cause ORA-1652: unable to extend temp segment from past 2 days. Basically need to know which all sessions in past 2 days have caused ORA-1652: unable to extend temp segment.
I have generated the AWR report but not able to figure it out which sessions caused this error.
Thanks in advance
01652, 00000, "unable to extend temp segment by %s in tablespace %s"
// *Cause: Failed to allocate an extent of the required number of blocks for
// a temporary segment in the tablespace indicated.
// *Action: Use ALTER TABLESPACE ADD DATAFILE statement to add one or more
// files to the tablespace indicated.

ORA-01652: unable to extend temp segment by 256 in tablespace TEMP

ORA-01652: unable to extend temp segment by 256 in tablespace HDM_DBUSER_TEMP
HI GURUS PLEASE HELP ME,
I Have 9i database on solaris version 9,
i am repeatedly getting the following error in the alert.log file.
Failed write to clobORA-01652: unable to extend temp segment by 256 in tablespace HDM_DBUSER_TEMP
using the meta link Doc ID:     280578.1, i have increased the temp TS, but still getting the same alert message in alert.log file.
In metalink it is given second solution,
If there is severe temp segment space contention across instances, a
slowdown can occur. The following are potential workarounds:
- Increase size of the temp tablespace
- Do not use the DEFAULT temp tablespace feature in RAC.
- Increase sort_area_size and/or pga_aggregate_target "
I have increased the size of the temp TS, but the error is poping up still in alert.log.
I don't know how to assign DEFAULT temp tablespace feature in RAC????
SQL> select inst_id, tablespace_name, total_blocks, used_blocks, free_blocks
from gv$sort_segment; 2 ^R
from gv$sort_segment;
INST_ID TABLESPACE_NAME TOTAL_BLOCKS USED_BLOCKS FREE_BLOCKS
1 TEMP 2304 0 2304
1 HDM_DBUSER_TEMP 519424 519424 0
PLEASE Help !!!
Thanks in advance

Hello,
Add additional datafile to followign tablespace, also post out of the followign command
SELECT dt.tablespace_name,
       file_name,
       bytes,
       extent_management,
       segment_space_management
FROM dba_tablespaces dt, dba_data_files ddf
WHERE dt.tablespace_name = ddf.tablespace_name;
ALTER TABLESPACE hdm_dbuser_temp ADD DATAFILE '/location/...' SIZE 512M
      AUTOEXTEND ON NEXT 256M MAXSIZE 4096M;   -- or unlimited on 8192 MRegards

ORA-01652 unable to extend temp segment in 11gR2 with ASM and 2 node RAC

Hi ,
I have a 11.2.0.1 system with 2 node RAC and ASM . We are hitting ORA-01652 very frequently
and I can see space is available in TEMP .
CREATE TEMPORARY TABLESPACE "TEMP" TEMPFILE
SIZE 21474836480,
SIZE 137437904896
AUTOEXTEND ON NEXT 655360 MAXSIZE 131071M ( Will the next size ignored as the extent size is 1MB ?)
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1048576
And during the failure
SELECT tablespace_name,
total_blocks,
used_blocks,
free_blocks,
total_blocks*32768/1024/1024 as total_MB,
used_blocks*32768/1024/1024 as used_MB,
free_blocks*32768/1024/1024 as free_MB
FROM gv$sort_segment;
TABLESPACE_NAME TOTAL_BLOCKS USED_BLOCKS FREE_BLOCKS TOTAL_MB USED_MB FREE_MB
TEMP 4849568 2385728 2463840 151549 74554 76995
TEMP 0 0 0 0 0 0
Also when I checked from v$sort_usage I see only two session consuming space
SQL> SELECT b.tablespace tablespace,
2 -- b.segfile#,
3 -- b.segblk#,
4 b.blocks,
5 b.blocks * (SELECT value FROM v$parameter WHERE name = 'db_block_size')/1024/1024 bytes,
6 a.sid,
7 a.username username,
8 a.osuser osuser,
9 a.inst_id,a.sid,a.serial#,a.module
10 FROM gv$session a, gv$sort_usage b
11 WHERE a.saddr = b.session_addr and
12 b.blocks != 16 and
13 a.inst_id = b.inst_id
14 ORDER BY b.tablespace, b.blocks, bytes desc;
BLOCKS BYTES SID USERNAME OSUSER INST_ID SID SERIAL# MODULE
1,192,864 37277 381 CN obiqb 2 381 860 nqsserver@icmqapp01cdp (TNS V1
1,192,864 37277 3952 CN obiqb 2 3952 1374 nqsserver@icmqapp01cdp (TNS V1
2,385,728 74554 (mb)
Wat is causing the 1652 ?

877394 wrote:
Thanks Srini,
But I did try all that notes with no luck .
I have a temporary tablespace with 150gb (130+20) datafiles .
TABLESPACE_NAME FILE_NAME (BYTES/1024/1024)
TEMP +DATA_01/tempfile/temp.314.743964            131071
TEMP +DATA_01/tempfile/temp.312.757303             20480
and the DDL is
CREATE TEMPORARY TABLESPACE "TEMP" TEMPFILE
SIZE 21474836480,
SIZE 137437904896
AUTOEXTEND ON NEXT 655360 MAXSIZE 131071M
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1048576
And on querying v$sort_usage
SQL> SELECT b.tablespace tablespace,
2 -- b.segfile#,
3 -- b.segblk#,
4 b.blocks,
5 b.blocks * (SELECT value FROM v$parameter WHERE name = 'db_block_size')/1024/1024 bytes,
6 a.sid,
7 a.username username,
8 a.osuser osuser,
9 a.inst_id,a.sid,a.serial#,a.module
10 FROM gv$session a, gv$sort_usage b
11 WHERE a.saddr = b.session_addr and
12 b.blocks != 16 and
13 a.inst_id = b.inst_id
14 ORDER BY b.tablespace, b.blocks, bytes desc;
TABLESPACE BLOCKS BYTES SID OSUSER INST_ID SID SERIAL# MODULE
TEMP 63,328 1,979 3952 CN 2 3952 1374
TEMP 84,384 2,637 381 CN 2 381 860
TEMP 433,184 13,537 381 CN 2 381 860
TEMP 1,117,728 34,929 3952 CN 2 3952 1374
sum 1,698,624 53,082 (mb)
So the space utilization was less than 150gb and on querying v$sort_Segment
SQL> SELECT tablespace_name,
total_blocks,
used_blocks,
free_blocks,
total_blocks*32768/1024/1024 as total_MB,
used_blocks*32768/1024/1024 as used_MB,
free_blocks*32768/1024/1024 as free_MB
FROM gv$sort_segment;
TABLESPACE_NAME TOTAL_BLOCKS USED_BLOCKS FREE_BLOCKS TOTAL_MB USED_MB FREE_MB inst
TEMP 4849568 2311104 2538464 151549 72222 79327 2
TEMP 0 0 0 0 0 0 1
why for inst 1 it is showing 0 (which means no sort is happening in instance 1)
But still we got the error
ORA-1652: unable to extend temp segment by 32 in tablespace TEMP
01652, 00000, "unable to extend temp segment by %s in tablespace %s"
// *Cause: Failed to allocate an extent of the required number of blocks for
//          a temporary segment in the tablespace indicated.
// *Action: Use ALTER TABLESPACE ADD DATAFILE statement to add one or more
//          files to the tablespace indicated.

ORA-1652: unable to extend temp segment by 128 in tablespace PSAPTEMP

Hi Gurus,
We are getting this alert continuosly , anybody please suggest me.
OS: AIX
DB:ORACLE 10g
We disabled STAT file also,, but still we are getting this alert
please check table spaces,,,
PSAPTEMP                          10.485.760     10.481.664          0          0          0    Off                  0    ONLINE
PSAPUNDO                           8.514.344      2.062.912         75         31        951    Off                 75    ONLINE     NOT ACTand file system also fine
please find below error details..
02/05/10 10:45:12 Europe/Middle (open.related - System Open Related):
External Update
05/02/2010 08:27:41 by CA
Attached new CA message: 1535095
.Last matching line that caused this alert: ORA-1652: unable to extend temp segment by 128 in tablespace PSAPTEMP
BR0301E SQL error -1652 in thread 4 at location stats_tab_collect-20, SQL statement:
'BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPP01"', TABNAME => '"GLPCA"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SI
ORA-01652: unable to extend temp segment by 128 in tablespace PSAPTEMP
ORA-06512: at "SYS.DBMS_STATS", line 13437
ORA-06512: at "SYS.DBMS_STATS", line 13457
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for table SAPP01.GLPCA
Regards,
balaram

HI,
ORA-01652: This error is caused by a tablespace overflow. As a rule of thumb, PSAPTEMP should be at least twice as large as the largest index. If an overflow occurs despite this size, this is     frequently due to external reasons such as incorrect Oracle parameter settings, large-scale parallel processing or    unfavorable access paths. See also Note 3155.
Check - 659946 for details.
Best Regards
Niraj

Failure to extend rollback segment

Hi
The following Info's are there in the alertlog but there is no ORA errors, Im having enough space in rollback segment,still im getting the same error daily, can anyone please assist?
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Failure to extend rollback segment 1
Failure to extend rollback segment 1 because of 1562 condition
Thanks
Venkat

There must be some accompanying messages after this error. What are the other errors you get?

ORA-01652: unable to extend temp segment by 128 in tablespace TEMP2

Dear all,
received this error when generate a report.
check the TEMP1 and TEMP2 they all have lot of spaces.
check the env $APPLLCSP return empty.
Please advise how to correct this error.
Regards,
Payables: Version : 12.0.0
APXSSIMP module: Supplier Sites Open Interface Import
APPLLCSP Environment Variable set to :
Current NLS_LANG and NLS_NUMERIC_CHARACTERS Environment Variables are :
American_America.UTF8
Enter Password:
REP-0069: Internal error
REP-57054: In-process job terminated:Terminated with error:
REP-300: MSG-00001: After SRWINIT
MSG-00002: After Get_Company_Name
MSG-00003: After Get_NLS_Strings
MSG-00004: After Importing Suppliers
MSG-00005: After Get_Header_Information
ORA-01652: unable to extend temp segment by 128 in tablespace TEMP2
==> SELECT assi.org_id C_Rejected_Org_Id,
MSG-00020: After SRWEXIT
Report Builder: Release 10.1.2.0.2 - Production on Mon May 11 09:55:36 2009

>
check the TEMP1 and TEMP2 they all have lot of spaces.
>
How much is "lot" ? :-) How did you determine this "lot" ?
Pl see MOS Doc 1025288.6 (How to Diagnose and Resolve UNABLE TO EXTEND Errors)
HTH
Srini

ORA-01555: snapshot too old: rollback segment number 3 with name "_SYSSMU3$

A Materalized view is scheduled to update every 12 hours . When it has tried to update it has thrown the error ...
ORA-12008: error in materialized view refresh path
ORA-01555: snapshot too old: rollback segment number 3 with name "_SYSSMU3$"
too small
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 803
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 860
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 841
ORA-06512: at line 1

Hi,
Can you increase the size of the UNDO Tablespace ?
For more information, you can find on this link below:
http://forums.oracle.com/forums/search.jspa?threadID=&q=ORA-01555&objID=c84&dateRange=all&userID=&numResults=15
Cheers

ORA-01562: failed to extend rollback segment

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