ORA-01581: attempt to use rollback segment (5) new extent (67) which is being allocat

While importing a table, I got the following errors. Basically, the server couldn't extend the rollback segment. I checked the disk space, tablespace extents (unlimited), and segment extents (unlimited), but I couldn't find a reason that the segment couldn't be extended.
What else do I have to check?

As I understand it, you can not explicitly set the size for the undo segments in automatic undo management mode. From the Concepts guide:
"In automatic undo management mode, the system controls exclusively the assignment of transactions to undo segments, and controls space allocation for undo segments."
It looks like we are also using the default storage options that are set when the UNDO tablespace was created. Here is the DDL used to create this tablespace:
CREATE SMALLFILE UNDO TABLESPACE "UNDOTBS" DATAFILE '/alpha/oradata/prod01/undotbs01.dbf' SIZE 750M REUSE AUTOEXTEND ON NEXT 25600K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs03.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 51200K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs04.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 104K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs02.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 25600K MAXSIZE 2000M

Similar Messages

  • ORA-01581: attempt to use rollback segment...

    We've started getting "ORA-01581: attempt to use rollback segment (31) new extent (3) which is being allocated" messages in our production database over the last couple of days. Of course, each time we get these the rollback segment number is different, and we are getting these randomly from different applications that connect to the same database. We are using automatic undo management, so the rollback segments are not really under our control. The action in the Oracle docs for this error message doesn't give any specific actions that we should take, but we continue to get these.
    We started to get these about the same time as we ran out of available sessions on the database (sessions = 1500 and we had 1500 open sessions). Could these be related? Could there be some open session that may be causing the rollback segment issue? Would a restart of the database fix this? Of course the max sessions issue was cleaned up two days ago but the rollback segment issue is a lingering problem.
    Any help would be appreciated. We couldn't find anything for this online and Oracle hasn't responded to our service request yet.
    Thanks,
    Bobby

    As I understand it, you can not explicitly set the size for the undo segments in automatic undo management mode. From the Concepts guide:
    "In automatic undo management mode, the system controls exclusively the assignment of transactions to undo segments, and controls space allocation for undo segments."
    It looks like we are also using the default storage options that are set when the UNDO tablespace was created. Here is the DDL used to create this tablespace:
    CREATE SMALLFILE UNDO TABLESPACE "UNDOTBS" DATAFILE '/alpha/oradata/prod01/undotbs01.dbf' SIZE 750M REUSE AUTOEXTEND ON NEXT 25600K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs03.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 51200K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs04.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 104K MAXSIZE 2000M , '/alpha/oradata/prod01/undotbs02.dbf' SIZE 2000M REUSE AUTOEXTEND ON NEXT 25600K MAXSIZE 2000M

  • 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

  • Can we see the old value using rollback segment no?

    hi
    querying the following
    SELECT * FROM joschedule AS OF TIMESTAMP To_Timestamp('5-jul-09 8:50:58','DD-MON-YY HH24:MI:SS') where unitid = 1 and joborderno = '91260050' but im getting the following error. How to see the using the segment no.
    ORA-01555: snapshot too old: rollback segment number 1 with name "_SYSSMU1$" too small kanish

    Well, as the error says, you do not have the rollback anymore that is required to build the old snapshot that your query specifies.
    You may want to increase the undo_retention parameter to specify how long Oracle should (try to) hold on to rollback data for this type of queries.

  • ORA-01555: snapshot too old: rollback segment number

    I getting error while i am taking export one of the table.
    EXP-00056: ORACLE error 1555 encountered
    ORA-01555: snapshot too old: rollback segment number with name "" too small
    ORA-22924: snapshot too old
    Export terminated successfully with warnings.
    can someone advise me

    1) What version of Oracle?
    2) Is UNDO_MANAGEMENT set to AUTO? Or are you still using manual undo management?
    3) What is your UNDO_RETENTION? How quickly are you generating UNDO? How big is your UNDO tablespace?
    4) How long does the export run?
    5) Did you specify CONSISTENT=Y in the export? If so, is that necessary?
    6) What else is going on? Is it possible to run the export during a quieter period?
    Justin

  • 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

  • ORA-01555 Snapshot too old, rollback segment  too small after flashback tab

    Hello
    Further to an update on a table in database, I realize that I have done an error and I want to come back in the state of table before this operation.
    For this I use 'Flashback table' as this command :
    flashback table 'table_name' to timestamp to_timestamp('2010-11-08 08:00:00 AM','YYYY-MM-DD HH:MI:SS PM')
    and I get this error :
    ORA-01555 :Snapshot Too Old rollback segment N° x , "_SYSSMU9$", too small
    What I can do to not have this problem ? can I avoid it ?
    Please helps .
    Regards
    Edited by: 794982 on 12 nov. 2010 05:05
    Edited by: 794982 on 12 nov. 2010 05:05
    Edited by: 794982 on 12 nov. 2010 05:06

    To set the undo retention period:
    Do one of the following:
    • Set UNDO_RETENTION in the initialization parameter file.
    UNDO_RETENTION = 1800
    • Change UNDO_RETENTION at any time using the ALTER SYSTEM statement:
    ALTER SYSTEM SET UNDO_RETENTION = 2400;
    The effect of an UNDO_RETENTION parameter change is immediate, but it can only be honored if the current undo tablespace has enough space.
    For more reference.
    http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/undo.htm

  • 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 ?

  • Is "SET TRANSACTION USE ROLLBACK SEGMENT" only a hint

    I have two users, one makes some inserts in a table.
    The other makes a select which visits many rows.
    I have a big rollback-segment.
    To ensure, both users use this rollback-segment I created a logon-trigger:
    CREATE OR REPLACE TRIGGER a_logon AFTER LOGON
    ON DATABASE
    WHEN ( USER IN ( 'SCOTT', 'BOB' ) )
    BEGIN
    SET TRANSACTION USE ROLLBACK SEGMENT rbs_big;
    END;
    But I still get "snapshot to old" messages from the select, which contains the name off an other rollback-segment in the message.
    The trigger really fires, i tested it by adding an insert-statement to a log-table.
    What`s wrong ?

    The set transaction use rollback segment lasts only until you commit or rollback first time and all other transactions in that session will not be forced to that rbs anymore. Other possible solution could be that other users are accessing same tables / updating them so those sessions can't keep the read consistent image available anymore for your sessions.

  • 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-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>

  • ORA-01555: snapshot too old: rollback segment number 8 with name

    Hi,
    Database version is Oracle8i Enterprise Edition Release 8.1.7.4.0
    I am struggling to fix this error, since I have not worked on 8I DATABASE.
    We getting this kind of error very frequently in one of the 8i database.
    ORA-01555: snapshot too old: rollback segment number 8 with name "ROLLBACK08" too small
    How do i fix this permantely.
    I have verified the RBS configured in the db.
    SEGMENT_NAME TABLESPACE_NAME OWNER STATUS
    SYSTEM SYSTEM SYS ONLINE
    ROLLBACK0 SYSTEM SYS OFFLINE
    ROLLBACK02 RBS1 SYS ONLINE
    ROLLBACK03 RBS1 SYS ONLINE
    ROLLBACK04 RBS1 SYS ONLINE
    ROLLBACK05 RBS1 SYS ONLINE
    ROLLBACK06 RBS1 SYS ONLINE
    ROLLBACK07 RBS1 SYS ONLINE
    ROLLBACK08 RBS1 SYS ONLINE
    ROLLBACK09 RBS1 SYS ONLINE
    ROLLBACK10 RBS1 SYS ONLINE
    ROLLBACK01 RBS1 SYS ONLINE
    SQL> SELECT t1.name, t2.extents, t2.rssize, t2.optsize, t2.hwmsize, t2.xacts, t2.status FROM v$rollname t1, v$rollstat t2 WHERE t2.usn = t1.usn ;
    NAME EXTENTS RSSIZE OPTSIZE HWMSIZE XACTS STATUS
    SYSTEM 7 770048 770048 0 ONLINE
    ROLLBACK02 2 41934848 262144000 41934848 0 ONLINE
    ROLLBACK03 3 62906368 262144000 62906368 1 ONLINE
    ROLLBACK04 3 62906368 262144000 62906368 0 ONLINE
    ROLLBACK05 2 41934848 262144000 41934848 0 ONLINE
    ROLLBACK06 3 62906368 262144000 62906368 1 ONLINE
    ROLLBACK07 3 62906368 262144000 62906368 1 ONLINE
    ROLLBACK08 3 62906368 300146688 62906368 0 ONLINE
    ROLLBACK09 3 62906368 262144000 62906368 1 ONLINE
    ROLLBACK10 3 62906368 262144000 62906368 1 ONLINE
    ROLLBACK01 3 62906368 300146688 62906368 0 ONLINE
    NAME0     USER0          RSSIZE Wraps Extents Shrinks     OPTSIZE     COMM0
    ROLLBACK01          62906368     19     3     0 300146688 lookup
    ROLLBACK02          41934848     0     2     0 262144000 lookup
    ROLLBACK03 OPS$RTRADM     62906368     20     3     0 262144000 lookup 50
    ROLLBACK04          62906368     34     3     0 262144000 lookup
    ROLLBACK05 OPS$RTRADM     41934848     28     2     0 262144000 No Command
    ROLLBACK06 OPS$RTRADM     62906368     21     3     0 262144000 lookup 50
    ROLLBACK07 OPS$RTRADM     62906368     25     3     0 262144000 lookup 50
    ROLLBACK08          62906368     32     3     0 300146688 lookup
    ROLLBACK09 OPS$RTRADM     62906368     20     3     0 262144000 Select
    ROLLBACK10 OPS$RTRADM     62906368     24     3     0 262144000 lookup 50
    SYSTEM               770048     0     7     0     lookup
    Can someone help ... who to set the RBS size here... i dont want this error happens here.. what i need to look or check.

    lm**** wrote:
    Hi,
    Database version is Oracle8i Enterprise Edition Release 8.1.7.4.0
    I am struggling to fix this error, since I have not worked on 8I DATABASE.
    We getting this kind of error very frequently in one of the 8i database.
    ORA-01555: snapshot too old: rollback segment number 8 with name "ROLLBACK08" too small
    How do i fix this permantely. upgrade to supported Oracle version since V8.1.7 has not been supported this Century.

  • Request got errror as ORA-01555: snapshot too old: rollback segment number

    hi Consultants,
    reqeust gor errores as ORA-01555: snapshot too old: rollback segment number 50 with name "_SYSSMU50$" too small ORA-06512: at line 90
    anyone please advice me on this.
    Thanks,
    Anu.

    Thanks for ur reply
    Is this a standard or custom concurrent program?This is customer program it is working fine if run as individual
    Thanks,
    Anu

  • CMSXDB sample: install.sql - error out, cannot use rollback segment

    I use the setup instruction and had errors when running install.sql at the following part:
    connect cmsadmin/cmsadmin@&tnsname
    SET serveroutput ON
    PROMPT Creating Table 'OTNCMS_PERSONALIZATION'
    CREATE TABLE OTNCMS_PERSONALIZATION (
    USERNAME VARCHAR2(20) NOT NULL,
    RESOURCELOC SYS.XDBURITYPE NOT NULL,
    VIEWTYPE VARCHAR2(40) NOT NULL,
    XSLLOC SYS.XDBURITYPE NOT NULL
    Resulted in error-
    ERROR at line 1:
    ORA-01552: cannot use system rollback segment for non-system tablespace 'USERS'
    Anyone knows why?

    Hi,
    What is the version of Database that is being used ?.
    I guess there must be some issue with the database being used, the archive mode or the UNDO segments. As a workaround, you can remove the following command from install.sql and run the sql script again.
    alter user cmsadmin default tablespace users;Regards
    Elango.

  • How can I avoid using rollback segment for batch updates.

    I am currently trying to avoid associating a large amount of space for rollback segment as this gets filled up only during the nightly batch updates. All that space will never be used during the day. Hence want to know if there is any way of avoiding the use of rollback segment at the session level.
    Rajesh

    No, but what you can do is create a large rollback segment to use with your batch job, at the start of your batch job bring the segment online, then use set transaction to use that rollback segment, when the batch job is finished and committed, you can then bring the rollback segment offline.
    If you are really pressed for space, as an alternate plan, you could actually create the large segment before the batch job and drop it after.

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