Rbs with undo table space

i have oracle 9i and i am using rollback segment i would like to use undo. can it possible that i can use both for time been and then retier the rollback segment.

When you set for the automatic undo management, then Oracle will automatically manage the size of each undo segment and the number of undo segments.
Initial number of undo segements is determined by three parameters
- sessions, transactions, processes
Then Oracle automatically increases the size and the number of undo segments.
Addtional feature introduced in 10g that is realted to the undo tablespace is the FAST RAMP-UP feature. This feature allows oracle to turn on the proper number of undo segments needed during the normal operation right away using the historical information in AWR even if you restart your database.

Similar Messages

  • Why does undo table space got full even when i commit between inserts??

    Dears,
    I have stored procedure which inserts around 5million record(insert select not applicable); and it always fails because of "ORA-30036: unable to extend segment by 8 in undo tablespace" although the procedure commits after every 10,000 records and the undo table space is 2GB. so my question is why does undo table space got full even if i commit?? & do i have other solution than making the undo auto extend??
    am working on Orcale 9i RAC
    Swaid A. McKey

    Actually, i had the same problem that my UNDO tablespace starting eating too much space, my undo_retention is set as 3hours, but how can estimate it using the view.
    Here the following sample output
    SID     STATISTIC#     VALUE
    3     151     0
    3     152     0
    3     153     0
    Can anyone assist with it ? But i still have the strange feeling why would UNDO get full once commit is being used. Even i did try with AUTOEXTEND and it throw me the errors that can't extend UNDO tablespace.
    Any ideas.....
    Thanks !!
    MB

  • UNDO Table space management

    Dear All,
    My client Export/Import Process failed while Importing at quality server. Production Server Export process completed successfully.
    It looks like your UNDO tablespace is too small to handle a large volume transaction. Either increase your UNDO tablespace size or commit more often.  Received this error at QAR Server and client import process failed.
    Pl. guide how to Increase UNDO Table space or if any more solution to resolve my issue.
    Regards,
    Naik Diptesh

    Hi,
    As per your error, it looks like that your Undo tablespace was full because of that your import failed. Undo tablespace you can increase from brtools in PSAPUNDO.
    As you have not mentioned your database release. Please check below notes for undo management as per your release.:
    Note 1035137 - Oracle Database 10g: Automatic Undo Retention
    Note 600141 -     Oracle9i: Automatic UNDO Management
    Thanks
    Sunny

  • Dropping Rollback table space in export dump and use the undo table space

    Hi,
    I want to upgrade my DB which is on 9.2.0.1.0 to 10.2.0.1.
    I have done an export.
    In order to import the DB I have created all the table spaces identical that of my export copy. While creating the Blank database I have already created Undo table space. In the exported DB I have a table space called rollback, how can I drop this table space and use undo table space. I believe this is the recommended table space that should be used in new releases
    Thank you

    Very briefly, these are the steps you will need to perform:
    1) Create an UNDO tablespace the same size as the Rollback tablespace, e.g.:
    CREATE UNDO TABLESPACE undo
    DATAFILE ‘/ora/$ORACLE_SID/001/oradata/$ORACLE_SID/undo_01.dbf’ size 1000M;
    2) Add the initialisation parameters UNDO_MANAGEMENT=AUTO, UNDO_TABLESPACE=UNDO. Omit the UNDO_RETENTION parameter unless it is to be set to a value other then the default of 900 (seconds)
    3) Remove the initialisation parameter ROLLBACK_SEGMENTS
    4) Bounce the database to bring the new parameters into effect.
    5) Drop the Rollback tablespace including contents and datafiles
    Cheers,
    Jason

  • UNDO table space in oracle

    Hi,
    Recently i have added one data file(2GB) to undo table space.Later i gog to know it is not recommend to extent the undo table space.In oracle 9i undo management is handle automatically.(in my init<SID>.ora file undo_management='AUTO')
    I have 3 data file undo_1,undo_2,undo_3.
    undo_2 is the datafile of 2Gb that i have added.
    My question is ....is there any possibility to remove that data file from the DB(undo_2) if possible how can i dod that.
    Pls help me.
    roshantha

    SQL> show parameter undo
    NAME TYPE VALUE
    undo_management string AUTO
    undo_retention integer 900
    undo_tablespace string UNDOTBS1
    SQL>
    SQL>
    ##FIRST : CREATE AN ANOTHER TEMPORARY UNDO TABLESPACE FOR YOUR DATABASE USERS.
    SQL> create undo tablespace UNDOTBS_TEMP datafile 'c:\undotbs_temp1.dbf' size 2G;
    Tablespace created.
    SQL> show parameter undo
    SQL> alter system set undo_tablespace=UNDOTBS_TEMP;
    System altered.
    SQL> show parameter undo
    NAME TYPE VALUE
    undo_management string AUTO
    undo_retention integer 900
    undo_tablespace string UNDOTBS_TEMP
    ##NOW DROP YOUR UNWANTED TABLESPACE INCLUDING DATAFILES
    SQL> drop tablespace undotbs1;
    Tablespace dropped.
    SQL> drop tablespace undotbs2 including contents and datafiles;
    Tablespace dropped.
    ##NOW RECREATE THE UNDOTBS and RUSE THE FILE YOU WANTED TO
    SQL> create undo tablespace UNDOTBS1 datafile 'C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\UNDOTBS01.DBF' reuse;
    Tablespace created.
    SQL> alter system set undo_tablespace=UNDOTBS1;
    System altered.
    SQL> show parameter undo
    NAME TYPE VALUE
    undo_management string AUTO
    undo_retention integer 900
    undo_tablespace string UNDOTBS1
    SQL>
    hope it helps :-)
    Thanks,
    Z

  • Shrinking Undo Table Space

    Dear All,
    Size of my Undo table space file has been more than 6GB. I am using Oracle 11g. How can I shrink the size of undo tablespace? Would it cause any problems for the Database?
    Thanks

    Dear Laura,
    Its brings back following output:
    SYSTEM     LOCAL
    SYSAUX     LOCAL
    UNDOTBS1     LOCAL
    TEMP      LOCAL
    USERS     LOCAL
    When I try to shrink the undo tablespace I use the following command and out put message:
    SQL> ALTER TABLESPACE undotbs1 SHRINK SPACE KEEP 1000M;
    ALTER TABLESPACE undotbs1 SHRINK SPACE KEEP 1000M
    ERROR at line 1:
    ORA-12916: cannot shrink permanent or dictionary managed tablespace

  • Snap Shot too old error And UNDO Table space.

    I posted [This Question|http://forums.oracle.com/forums/thread.jspa?threadID=718704&tstart=0] in PL/SQL forum. Now thought this would be a better place.
    Thanks,
    Karthick.

    Karthik,
    Its actually not the same thing when we talk about manual Rollback Segments and Automatic Undo Segments. Besides the fact that the former is created by us and thus needs to be managed properly in the terms of the size and other things, the later one is far more performance oriented. There are couple of enhancements which are done in terms of Automatic Undo , to quote a few, Undo Stealing is one .Another is the on the fly making the undo segments offfline and while starting up the database, only the needed ones are available . This enables the fast instance startup.
    Wont oracle automatically adjust the UNDO_RETENTION parameter based on the UNDO table space size.
    If you have read it from Orcle docs than you must have seen this advice is correct when the release is 10.2 onwards and the tablespace is autoextensible. If the tablespace is autoextensible than from 10.2 onwards, you don't need to worry about the undo_retention period. It will be set automatically. If the tablespace is not autoextensible than Oracle would set the parameter value to the duration of the query.
    For the snapshot too old error, I would suggest you read this link,
    http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:275215756923
    There is no other document AFAIK which explains it more clearly than this one.
    HTH
    Aman....

  • UNDO table space : ora :30036

    Hi All,
    How to fix ora 30036 table space error..
    When the data is loading in to the table i got ora :30036 undo table space error.
    What is undo table space error and how to fix this issues . pleas any one let me know.
    The Error was:
    Error Code :ORA-30036: unable to extend segment by 4 in undo tablespace 'UNDOTBS1'
    Thanks
    Sree
    Edited by: 874823 on Oct 27, 2011 5:26 PM

    Hi ,
    The following is the table space info
    TABLESPACE_NAME FILE_NAME
    SYSTEM /oracle/oradata/TWDMQ/dbs1TWDMQ.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_52.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_53.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_54.dbf
    SYSAUX /oracle/oradata/TWDMQ/sysaux01.dbf
    UNDOTBS1 /oracle/oradata/TWDMQ/undotbs01.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_01.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_02.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_03.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_04.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_05.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_06.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_07.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_08.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_09.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_10.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_11.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_12.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_13.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_14.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_15.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_16.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_17.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_18.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_19.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_20.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_21.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_22.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_23.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_24.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_25.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_26.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_27.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_28.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_29.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_30.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_31.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_32.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_33.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_34.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_35.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_36.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_37.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_38.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_39.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_40.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_41.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_42.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_43.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_44.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_45.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_46.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_47.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_48.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_49.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_50.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_51.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_55.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_56.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_57.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_58.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_59.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_60.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_61.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_62.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_63.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_64.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_65.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_66.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_67.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_68.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_69.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_70.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_71.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_72.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_73.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_74.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_75.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_76.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_77.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_78.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_79.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_80.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_81.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_82.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_83.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_84.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_85.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_86.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_87.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_88.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_89.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_90.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_91.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_92.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_93.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_94.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_95.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_96.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_97.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_98.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_99.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_100.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_101.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_102.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_103.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_104.dbf
    DE_DATA /oracle/oradata/TWDMQ/DE_data_105.dbf

  • UNDO Tables Space File deleted accidently

    Dear All,
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    hi,
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  • Dump on table space

    HI,
    We are executing the TCode : FV65 and getting the dump as follows.
    =====
    ShrtText                                                                               
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  • SYSTEM table space is critical

    Hi,
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    Regards,
    ARNS.

    Hi,
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