SYSTEM tablespace rollback segment

Hi, i had taken a tablespace offline. so the active transactions data will go to SYSTEM rollback segment.
SYSTEM tablespace will use this rollback segments for transactions instead of undo. am i right?
now i dropped the tablespace. so how much time the data which is there in system rollback segments exists? will that data will be overrided because of other transactions on system tablespace?(think that i don't require that tablespace so i dropped it)
thanks in advance

please anybody post the answer

Similar Messages

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  • Cannot use system rollback segment for non-system tablespace 'TEMP

    Hi everyone!
    I encountered this error: "Cannot use system rollback segment for non-system tablespace 'TEMP"
    So this is what I did to check if the undo stuffs are online.
    SQL> select tablespace_name,status from dba_tablespaces;
    TABLESPACE_NAME                STATUS
    SYSTEM                         ONLINE
    UNDO                           ONLINE
    SYSAUX                         ONLINE
    TEMP                           ONLINE
    LARGEDATA                      ONLINE
    LARGEINDEXES                   ONLINE
    MEDIUMDATA                     ONLINE
    MEDIUMINDEXES                  ONLINE
    SMALLDATA                      ONLINE
    SMALLINDEXES                   ONLINE
    XSMALLDATA                     ONLINE
    TABLESPACE_NAME                STATUS
    XSMALLINDEXES                  ONLINE
    XXSMALLTABS                    ONLINE
    USERS                          ONLINE
    CONVTABLES                     ONLINE
    UNDO_02                        ONLINE
    16 rows selected.
    SQL>  SELECT tablespace_name, sum((bytes/1024)/1024) free FROM DBA_FREE_SPACE gr
    oup by tablespace_name;
    TABLESPACE_NAME                      FREE
    LARGEDATA                      18.3105469
    SMALLDATA                        10.46875
    SYSAUX                           106.5625
    UNDO_02                            67.125
    XXSMALLTABS                    13.0078125
    CONVTABLES                     170.039063
    MEDIUMDATA                             22
    USERS                           37.265625
    SYSTEM                             55.875
    LARGEINDEXES                   30.5175781
    XSMALLINDEXES                    17.34375
    TABLESPACE_NAME                      FREE
    UNDO                             546.9375
    MEDIUMINDEXES                       33.25
    SMALLINDEXES                    31.015625
    XSMALLDATA                     23.6328125
    15 rows selected.
    SQL> select file#,status from v$datafile;
         FILE# STATUS
             1 SYSTEM
             2 ONLINE
             3 ONLINE
             4 ONLINE
             5 ONLINE
             6 ONLINE
             7 ONLINE
             8 ONLINE
             9 ONLINE
            10 ONLINE
            11 ONLINE
         FILE# STATUS
            12 ONLINE
            13 ONLINE
            14 ONLINE
            15 ONLINE
    15 rows selected.
    SQL> select segment_name, tablespace_name, initial_extent,status
      2  from dba_rollback_segs;
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    SYSTEM                         SYSTEM                                 102400
    ONLINE
    _SYSSMU1$                      UNDO                                   131072
    OFFLINE
    _SYSSMU2$                      UNDO                                   131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU3$                      UNDO                                   131072
    OFFLINE
    _SYSSMU4$                      UNDO                                   131072
    OFFLINE
    _SYSSMU5$                      UNDO                                   131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU6$                      UNDO                                   131072
    OFFLINE
    _SYSSMU7$                      UNDO                                   131072
    OFFLINE
    _SYSSMU8$                      UNDO                                   131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU9$                      UNDO                                   131072
    OFFLINE
    _SYSSMU10$                     UNDO                                   131072
    OFFLINE
    _SYSSMU11$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU12$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU13$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU14$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU15$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU16$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU17$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU18$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU19$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU20$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU21$                     UNDO_02                                131072
    OFFLINE
    22 rows selected.How should I be bringing them online?
    I tried this but didn't work for me.
    SQL> alter rollback segment _SYSSMU1$ online;
    alter rollback segment _SYSSMU1$ online
    ERROR at line 1:
    ORA-00911: invalid character
    SQL> alter rollback segment '_SYSSMU1$' online;
    alter rollback segment '_SYSSMU1$' online
    ERROR at line 1:
    ORA-02245: invalid ROLLBACK SEGMENT name
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    alter rollback segment _SYSSMU21$ online
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    ORA-00911: invalid character
    SQL> alter rollback segment SYSSMU21$ online;
    alter rollback segment SYSSMU21$ online
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    ORA-01534: rollback segment 'SYSSMU21$' doesn't exist
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    alter rollback segment '_SYSSMU21$' online
    ERROR at line 1:
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    alter rollback segment "_SYSSMU21$" online
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    Nith
    Edited by: user645399 on Feb 23, 2011 2:52 PM

    SQL> select segment_name, tablespace_name, initial_extent,status
      2  from dba_rollback_segs;
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    SYSTEM                         SYSTEM                                 102400
    ONLINE
    _SYSSMU1$                      UNDO                                   131072
    ONLINE
    _SYSSMU2$                      UNDO                                   131072
    ONLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU3$                      UNDO                                   131072
    ONLINE
    _SYSSMU4$                      UNDO                                   131072
    ONLINE
    _SYSSMU5$                      UNDO                                   131072
    ONLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU6$                      UNDO                                   131072
    ONLINE
    _SYSSMU7$                      UNDO                                   131072
    ONLINE
    _SYSSMU8$                      UNDO                                   131072
    ONLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU9$                      UNDO                                   131072
    ONLINE
    _SYSSMU10$                     UNDO                                   131072
    ONLINE
    _SYSSMU11$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU12$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU13$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU14$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU15$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU16$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU17$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU18$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU19$                     UNDO_02                                131072
    OFFLINE
    _SYSSMU20$                     UNDO_02                                131072
    OFFLINE
    SEGMENT_NAME                   TABLESPACE_NAME                INITIAL_EXTENT
    STATUS
    _SYSSMU21$                     UNDO_02                                131072
    OFFLINEStill undo_02's segments are offline.

  • Error:cannot use system rollback segment for non-system tablespace

    Hi,
    I have created a oracle database 10.2.0 on fedora 9 system. I have created a user and assigned the default tablespace SATYA and given the permissions. But when I create a table in the user I am getting the following error.
    Can anyone help me in rectifying this error.
    ORA-01552: cannot use system rollback segment for non-system tablespace 'SATYA'
    thankyou
    satya

    Undo management is either AUTO or Manual, no local
    http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/undo.htm#sthref1469
    Since you are using 10g, you are recommended to use Auto undo management
    If you still plan to use manual undo management, make sure you have other non-system rollback segment in place.

  • ORA-01552: cannot use system rollback segment for non-system tablespace

    i try to create a table in new schema test1 and got the following error. please help.
    SQL> create table employer1 as select * from a.employer;
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    Hi,
    This is an example:
    SQL>
    CREATE UNDO TABLESPACE "UNDOTMP"
    DATAFILE 'UNDOTMP.DBF01' SIZE 100M REUSE
    AUTOEXTEND ON NEXT 51200K MAXSIZE 15000M
    ALTER SYSTEM SET undo_tablespace=UNDOTMP SCOPE=BOTH;
    Regards
    David Duenas
    Edited by: David Duenas on Jul 4, 2009 7:33 PM

  • Cannot use system rollback segment for non-system tablespace

    I am getting the below error suddently
    ORA-01552: cannot use system rollback segment for non-system tablespace 'USERS'

    SQL> show parameter undo
    Version : Oracle 10g
    NAME TYPE VALUE
    undo_management string AUTO
    undo_retention integer 10800
    undo_tablespace string UNDO
    SQL>
    SQL> select distinct tablespace_name, status from dba_rollback_segs
    2 ;
    TABLESPACE_NAME STATUS
    SYSTEM ONLINE
    UNDO OFFLINE
    UNDO ONLINE

  • SYSTEM Rollback Segment bad

    I ported a database over to a new server.
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    LGWR: Primary database is in CLUSTER CONSISTENT mode
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    SMON: Parallel transaction recovery tried
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    create rollback segment system
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    Tue Jul 11 14:34:45 2006
    ORA-1535 signalled during: create rollback segment system
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    Tue Jul 11 14:35:02 2006
    Thread 1 cannot allocate new log, sequence 14701
    All online logs needed archiving
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    Tue Jul 11 14:35:12 2006
    drop rollback segment system
    Tue Jul 11 14:35:12 2006
    ORA-1544 signalled during: drop rollback segment system...
    Tue Jul 11 14:41:33 2006
    alter rollback segment system offline
    Tue Jul 11 14:41:33 2006
    ORA-30019 signalled during: alter rollback segment system offline...

  • Rollback segments using UNDO Tablespace?

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  • Why Oracle10g uses System Rollback Segment....????

    Hi ,
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  • Cannot drop old undo tablespace. Cause: active rollback segment

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    os: rhel as version 5 64 bits.
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    _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>
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    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

  • SYSTEM Tablespace Segment Management

    When creating a new database (11.1.0.7) on AIX 5.3, what are the benefits of creating a SYSTEM tablespace with MANUAL segment management? This question may not be limited to 11g databases, but I was curious if the SYSTEM tablespace could be set to AUTO segement management and what drawbacks I might see in doing so?
    Most of the databases I help manage have been established years ago and most, if not all, are set to MANUAL.
    Thanks

    This is the default. I do not think you or I know better than the Oracle designers ho to best setup the SYSTEM tablespace. You are best to leave it alone.
    SQL> exec print_table('select * from dba_tablespaces where tablespace_name = ''SYSTEM''');
    TABLESPACE_NAME               : SYSTEM
    BLOCK_SIZE                    : 8192
    INITIAL_EXTENT                : 65536
    NEXT_EXTENT                   :
    MIN_EXTENTS                   : 1
    MAX_EXTENTS                   : 2147483645
    MAX_SIZE                      : 2147483645
    PCT_INCREASE                  :
    MIN_EXTLEN                    : 65536
    STATUS                        : ONLINE
    CONTENTS                      : PERMANENT
    LOGGING                       : LOGGING
    FORCE_LOGGING                 : NO
    EXTENT_MANAGEMENT             : LOCAL
    ALLOCATION_TYPE               : SYSTEM
    PLUGGED_IN                    : NO
    SEGMENT_SPACE_MANAGEMENT      : MANUAL
    DEF_TAB_COMPRESSION           : DISABLED
    RETENTION                     : NOT APPLY
    BIGFILE                       : NO
    PREDICATE_EVALUATION          : HOST
    ENCRYPTED                     : NO
    COMPRESS_FOR                  :
    -----------------As you can see, SYSAUX is set up a bit different. System being special, you are best to leave it alone.
    SQL> exec print_table('select * from dba_tablespaces where tablespace_name = ''SYSAUX''');
    TABLESPACE_NAME               : SYSAUX
    BLOCK_SIZE                    : 8192
    INITIAL_EXTENT                : 65536
    NEXT_EXTENT                   :
    MIN_EXTENTS                   : 1
    MAX_EXTENTS                   : 2147483645
    MAX_SIZE                      : 2147483645
    PCT_INCREASE                  :
    MIN_EXTLEN                    : 65536
    STATUS                        : ONLINE
    CONTENTS                      : PERMANENT
    LOGGING                       : LOGGING
    FORCE_LOGGING                 : NO
    EXTENT_MANAGEMENT             : LOCAL
    ALLOCATION_TYPE               : SYSTEM
    PLUGGED_IN                    : NO
    SEGMENT_SPACE_MANAGEMENT      : AUTO
    DEF_TAB_COMPRESSION           : DISABLED
    RETENTION                     : NOT APPLY
    BIGFILE                       : NO
    PREDICATE_EVALUATION          : HOST
    ENCRYPTED                     : NO
    COMPRESS_FOR                  :
    -----------------

  • Rollback segment in locally manage tablespace

    Is it possible to create rollback segment in
    locally manage tablespace in oracle 8i(8.1.6)
    kuljeet pal singh

    Srini,
    Both the 10gR2 and 11gR2 versions of the database are using automatic undo management.
    Connected to:
    Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit Production
    With the Partitioning, OLAP and Data Mining options
    SQL> show parameter undo
    NAME TYPE VALUE
    _undo_autotune boolean TRUE
    undo_management string AUTO
    undo_retention integer 14400
    undo_tablespace string UNDOTBS1
    SQL>
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    With the Partitioning, OLAP, Data Mining and Real Application Testing options
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    NAME TYPE VALUE
    undo_management string AUTO
    undo_retention integer 14400
    undo_tablespace string UNDOTBS1
    SQL>
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  • Difference Between Rollback Segments and UNDO Tablespace

    Hi guys,
    Can you tell difference between Rollabck segments and UNDO Tablespaces.
    I think that rollback Segemnts and UNDO tablespaces are similar both are used for storing before imags of data, which is going to be modified.
    but my question still both the rollback abck segments and UNDO tablespaces exists.
    why and what is the reason of both existing and at what time, we can use..them at which scenarios's
    Regards,
    Pavan Kumar N

    Undo segments in undo tablespaces, introduced in 9i, are the successor of rollback segments.
    They are automatically managed by Oracle.
    Rollback segments exist for reasons of backwards compatibility.
    That said, you should switch to undo segments and stop using rollback segments.
    Other than that: could you please avoid rehearsing the complete documentation in this forum?
    Sybrand Bakker
    Senior Oracle DBA

  • SYSTEM Rollback Segment

    I had 7 system rolback segment in my database. I know about the one but i don't know how the other 6 are created.
    Can I take the other 6 system rollback segment offline and drop?
    Did they hurst the database ?

    <<I have multiple system Rollback segment in my database. I want to keep one system rollback segment.>>
    why do you want to offline remainning rollback segment.
    if u offline rollback segments then it will effect the performance.
    i think you should read first rollback segment concept guide.
    http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96521/undo.htm#9114
    Thanks and Regards
    Kuljeet pal singh

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