Undo and temporary tablespace structure

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• cancellation by default and temporary tablespace issue

  (Oracle 10g)

  Sorry, I don't have access to a database at the moment to try this out, so I ask here.

  If we create these, the system gets used.

  (1) but if we create these and you do not specify a default undo tablespace or default temporary tablespace - what this means system will still get used?

  (2) what happens if we specify cancel default and temporary storage spaces, to give the user a quota on these or the user automatically uses?

  Thank you.

  Hello

  I'll try to be clear...

  2875396 wrote:

  (Oracle 10g)

  (1) but if we create these and you do not specify a default undo tablespace or default temporary tablespace - what this means system will still get used?

  (A) to CANCEL, Yes, SYSTEM is used but a few transactions more tablespace SYSAUX & SYSTEM are permitted.

  operations on other storage space you need for an UNDO tablespace configured.

  Test:

  SQL> show parameters undo
  
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  undo_tablespace                      string
  
  SQL> drop table cdc.tab_dummy purge;
  
  SQL> create table cdc.tab_dummy(id number) tablespace system;
  
  Table created.
  
  SQL> insert into cdc.tab_dummy values(1);
  
  1 row created.
  
  SQL> rollback;
  
  Rollback complete.
  
  SQL> drop table cdc.tab_dummy purge;
  
  SQL> create table cdc.tab_dummy(id number) tablespace sysaux;
  
  Table created.
  
  SQL> insert into cdc.tab_dummy values(1);
  
  1 row created.
  
  SQL> rollback;
  
  Rollback complete.
  
  SQL> drop table cdc.tab_dummy purge;
  
  SQL> create table cdc.tab_dummy(id number) tablespace users;
  
  SQL> insert into cdc.tab_dummy values(1);
  insert into cdc.tab_dummy values(1)
                  *
  ERROR at line 1:
  ORA-01552: cannot use system rollback segment for non-system tablespace 'USERS'
  
  SQL> alter system set undo_tablespace='UNDOTBS1';
  
  SQL> insert into cdc.tab_dummy values(1);
  
  1 row created.
  
  SQL> select * from cdc.tab_dummy;
  
          ID
  ----------
           1
  
  SQL> rollback;
  
  Rollback complete.
  
  SQL> select * from cdc.tab_dummy;
  
  no rows selected
  

  (B) for TEMP, depends on:

  At the time of creation of database:

  IF = LMT SYSTEM THEN

  you have to specify a temporary tablespace

  ON THE OTHER

  the SYSTEM tablespace can be used as temporary tablespace

  END IF

  Doc http://docs.oracle.com/cd/B19306_01/server.102/b14220/physical.htm#i10741

  (2) what happens if we specify cancel default and temporary storage spaces, to give the user a quota on these or the user automatically uses?

  (A) to CANCEL,

  No, this storage space is for the feature "Internal (read consistency, etc.)" and you don't have to worry about the users quota.

  You can query the view dba_undo_extents separate owner and you can see that all extensions are owner of SYS.

  You can test it to create a new user with any quota on undo tablespace.

  (B) for the TEMPERATURE,

  No, this storage space is for the feature "in-house (sort operations, etc.)" and you don't have to worry about quotas users

  You can test it create a new user with any quota on the temporary tablespaces, performing a sort of big or creating an index.

  Thank you.

  Kind regards

  Juan M

• sorting data - more great temp tablespace and temporary tablespace

  Hello
  
  Using oracle 11.2.0.3 and have a general question.
  
  If have a query which has to say read 100 million records and the Group results it takes a bigger temporary tablespace to sort these data
  
  Rathet than agnist an identical query summed up version of table (mview) including 25% of this amount - gbe that same but cliniquesdans need to read much less lines.
  
  s.EG
  

  select dimesnion.attribute1, dimesnion,.attribute2..., sum(sales)
  
  from fact, dimension
  where ....
  
  group by dimesnion.attribute1, dimesnion,.attribute2

  Thank you very much

  If I understand your question right, I think both group by must take the same temporary as space ' group by ' sorts data in the end after read data. As both the results of queries in the same number of lines, so group by clause will take same tablespace temporary unless there are fewer columns in the materialized view as the original table.

• When doing an insert, which undo and redo do

  as it is said

  When you insert a row, or perform any other DML, Oracle will write information in the Undo tablespace that can be used to cancel the operation. If the user issues "rollback" or there is another reason does not commit the transaction, Oracle is going to undo the change, where the name. Roll forward is a recovery mechanism that allows to replay transactions. The redo records do what they say, they have left Oracle recreate or redo the transaction. Undo and redo go hand in hand. Indeed, Oracle writes both the cancellation and the restore information by progress in online redo logs.

  I recommend reading the Guide of the Concepts for more information.

  See you soon,.
  Brian

• Problem when droping temporary tablespace

  After changing the temporary tablespace default temp for TEMP3, when I try to drop the TEMP tablespace hangs until I have terminate with CTRL + C.

  The reason is there sessions using TEMP that will not disconnect.

  I guess connections SYSAUX will leave if I close SGD, but what of the APPLICATION of substantive processes? I can't stop this instance for such a stupid task.

  Looking at the LAST_ETL_TIME and the STATUS of the RCGB bg process, I realized that they are ASSETS since the database started upward, 21/09/2012.

  Any ideas?

  Thank you.

  Col tablespace format a10

  Col username format a6

  Col osuser format a6

  Pass program format a27

  SELECT a.INST_ID, b.tablespace, b.segfile #, b.segblk #, b.blocks, a.sid, a.serial #, a.username, a.osuser, a.program, b.segtype, to_char (a.logon_time, ' dd/mm/yy HH24') logon_time, a.status, a.last_call_et

  GV $ session has, gv$ sort_usage b

  WHERE a.saddr = b.session_addr

  ORDER BY 1, 2, 3, 4, 5, 6;

  INST_ID SELECT TABLESPACE SEGFILE # SEGBLK # BLOCK SID, SERIAL # USERNA OSUSER PROGRAM SEGTYPE LOGON_TIME STATUS LAST_CALL_ET

  ---------- ---------- ---------- ---------- ---------- ---------- ---------- ------ ------ --------------------------- --------- -------------- -------- ------------

  1 oracle TEMP 201 2766464 128 640 31865 SYSMAN SGD INDEX 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2856192 128 640 31865 SYSMAN GIVEN WHO 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2865664 128 695 45433 SYSMAN SGD INDEX 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2865792 128 695 45433 SYSMAN GIVEN WHO 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2865920 128 695 45433 SYSMAN GIVEN WHO 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2866048 128 695 45433 SYSMAN SGD INDEX 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2894976 128 640 31865 SYSMAN GIVEN WHO 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2895104 128 695 45433 SYSMAN GIVEN WHO 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2895232 128 695 45433 SYSMAN SGD INDEX 16/10/13 10:50 22 INACTIVE

  1 oracle TEMP 201 2895360 128 640 31865 SYSMAN SGD INDEX 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2895488 128 640 31865 SYSMAN SGD INDEX 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2895616 128 640 31865 SYSMAN GIVEN WHO 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2895744 128 640 31865 SYSMAN GIVEN WHO 16/10/13 10:50 56 INACTIVE

  1 oracle TEMP 201 2933120 128 695 45433 SYSMAN GIVEN WHO 16/10/13 10:50 22 INACTIVE

  1 TEMP3 203 136192 128 392 8811 WEB_ES person don't httpd@weblxfe03 (V1 - V3 TNS) DATA 04/04/14 15:00 IDLE 0

  DC81

  Oracle TEMP 201 490368 128 337 55503 SYSMAN 2 the WHO DATA 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 628992 128 337 55503 SYSMAN 2 SGD INDEX 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 640768 128 337 55503 SYSMAN 2 SGD INDEX 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 701056 128 337 55503 SYSMAN 2 SGD INDEX 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 744064 128 337 55503 SYSMAN 2 the WHO DATA 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 757760 128 337 55503 SYSMAN 2 the WHO DATA 16/10/13 10:49 52 INACTIVE

  Oracle TEMP 201 762752 128 337 55503 SYSMAN 2 the WHO DATA 16/10/13 10:49 52 INACTIVE

  2 TEMP 201 3033728 128 55 1 oracle [email protected] (Application) DATA 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3033984 128 55 1 oracle [email protected] (Application) of the INDEX 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3034368 128 55 1 oracle [email protected] (Application) DATA 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3048448 128 55 1 oracle [email protected] (Application) of the INDEX 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3048576 128 55 1 oracle [email protected] (Application) DATA 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3048704 128 55 1 oracle [email protected] (Application) DATA 21/09/12 09:51 48402541 ACTIVE

  2 TEMP 201 3048832 128 55 1 oracle [email protected] (Application) of the INDEX 21/09/12 09:51 48402541 ACTIVE

  3 oracle TEMP 201 3033728 128 55 52181 SYSMAN GIVEN WHO 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3033984 128 55 52181 SYSMAN SGD INDEX 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3034368 128 55 52181 SYSMAN GIVEN WHO 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3048448 128 55 52181 SYSMAN SGD INDEX 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3048576 128 55 52181 SYSMAN GIVEN WHO 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3048704 128 55 52181 SYSMAN GIVEN WHO 16/10/13 10:49 25 INACTIVE

  3 oracle TEMP 201 3048832 128 55 52181 SYSMAN SGD INDEX 16/10/13 10:49 25 INACTIVE

  3 TEMP3 203 239616 128 286 50245 WEB_ES person don't httpd@weblxfe21 (V1 - V3 TNS) DATA 04/04/14 15:03 IDLE 0

  DC81

  37 selected lines.

  # Note: 'oracle2.local' is the host name and domain.

  Here is the solution: http://danielrobertosoto.blogspot.com.ar/2014/04/11gr2-result-cache-feature.html

• How to rename the temporary tablespace group name

  How to rename the temporary tablespace group name?  I have to remove all the temporary tablespace under the Group and then re-create the temporary tablespace again.

  EBS r12.1.1

  Database 11.0.1.7

  Please see any id doc.

  concerning

  pritesh Rodriguez

  Thanks for your update. I have solved my problem by creating a new group and add temporary tablespace to new goup.

  concerning

  pritesh Rodriguez

• Temporary tablespace: size of the measure

  Move us our DWH (1 to) to new hardware and upgrade to 11g DB. The system made heavy use of temporary storage during sorts / joins. That's why we'll go temporary tablespace groups different discs/pins.
  Now, we wonder if the size of the measure for the managed temporary tablespaces locally will also contribute to the performance. Standard measurement site is 1 M. Is there something to consider?

  Salvation;

  Please check the notes that might be useful for your question below:
  What size should have when creating temporary Segments to PERMANENT Tablespace [ID 163427.1]
  How to choose the measurement for a temporary Tablespace size prevent ORA-3232 [ID 125271.1]

  Respect of
  HELIOS

• The loss of the temporary tablespace planted the Instance?

  DB version: 10 gr 2 and higher
  
  The loss of the temporary tablespace planted the DB. A database can survive without sorting and Index - rebuilt (main uses of the Temp tablespace). Right?

  sb92075 wrote:
  Handle: J.Kiechle
  Status level: Beginner
  Join date: January 21, 2008
  Messages total: 129
  Total issues: 22 (16 pending)
  many questions and so few answers.
  :-(

  What this has to do with Sb?

  Results complete post of
  SELECT * from version of v$.

  OP mentioned 10 gr 2 and higher. But otherwise too, it won't really matter as this seems to be a generic question IMO. The only difference version that would leave 10 g, restart the db would make the temporary tablespace once again, that's all!

  Aman...

• Temporary tablespace in 8i

  Hello
  
  I have a data base of Production running 8i on Windows platform. (I know its not taken care of, but unfortunately, one of our client application is still running on it).
  The customer complained a problem of performance and when I analyzed, I saw today that there is no temporary table space assigned to that base.
  All use the SYSTEM tablespace as the temporary tablespace.
  
  So I created a tablespace temporary new TEMP1. Now, I want to make the default temporary tablespace.
  How do I do that? When I tried to give the command, it throws the below error.
  
  SQL > ALTER DATABASE DEFAULT TEMPORARY TABLESPACE by temp1;
  ALTER DATABASE by DEFAULT TABLESPACE TEMPORARY temp1
  *
  ERROR on line 1:
  ORA-02231: missing or not valid option ALTER DATABASE
  
  This command is not supported by 8i? Please let me know how to define TEMP1 as new temporary tablespace and assign all users to the newly created TEMP tablespace.
  
  Thank you!

  SQL > ALTER DATABASE DEFAULT TEMPORARY TABLESPACE by temp1;
  ALTER DATABASE by DEFAULT TABLESPACE TEMPORARY temp1
  *
  ERROR on line 1:
  ORA-02231: missing or not valid option ALTER DATABASE

  This command is not supported by 8i? Please let me know how to define TEMP1 as new temporary tablespace and assign all users to the newly created TEMP tablespace.

  You cannot set the temporary tablespace at database as tablespace temporary level by default in Oracle 8i. Oracle 9i from, you can create and assign the temporary tablespace at database level.

  Only possible in Oracle 8i is at the level of the user.

  SQL > alter user scott tablespace temporary TEMP;

  Concerning
  Shane

• Temporary Tablespace issue

  Hello
  
  Oracle 10g
  
  When temporary tablespace verification through sql query gives output below. While when I check through Enterprise Manager, it shows autoextentible up to 2GB.
  

  SQL>  select *from DBA_TABLESPACES
    2   where
    3   tablespace_name= 'TEMP'
    4  /
  
  TABLESPACE_NAME                BLOCK_SIZE INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS PCT_INCREASE MIN_EXTLEN STATUS    CONTENTS  LOGGING   FORCE_LOGGING EXTENT_MANAGEMENT ALLOCATION_TYPE PLUGGED_IN SEGMENT_SPACE_MANAGEMENT DEF_TAB_COMPRESSION RETENTION   BIGFILE
  ------------------------------ ---------- -------------- ----------- ----------- ----------- ------------ ---------- --------- --------- --------- ------------- ----------------- --------------- ---------- ------------------------ ------------------- ----------- -------
  TEMP                                 8192        1048576     1048576           1                        0    1048576 ONLINE    TEMPORARY NOLOGGING NO            LOCAL             UNIFORM         NO         MANUAL                   DISABLED            NOT APPLY   NO

  Please suggest. Thank you.

  Use the query below and check if you get the same value as EM
  Select CanGrow, sum(maxbytes/1024/1024/1024) in the dba_temp_files where nom_tablespace = 'TEMP' group by CanGrow;

  You must for CanGrow, query dba_temp_files. (not dba_tablespaces)

• Temporary tablespace growth

  Hello guys,.
  
  I have an Oracle (10g version 10.1.0.5.0) database that is not too big, but my phase of temporary tablespace (LMT) too (20 GB)
  How can I save a normal or more regular size?
  
  Kind regards.

  There are reasons of servral why your app (has nothing to do with the size of the database) is using a lot of temporary space. Get your temporary tablespace to small size can not solve. It will still grow after that.

  You might want to take a look at these discussions on the parameters of the PGA, etc.

  Re: Problem with memory PGA - Oracle 10.2.0.4 on windows 2003
  Re: Details on using in the memory of the PGA

  If you must reduce the size of your tablespace temp of smaller size, an option is to create a new temp tablespace, change username for this tablespace, drop the old temp tablespace and re-create for small size chosen, then switch users back.

  Avoid creating your temporary tablespace with temporary file extension. The size of your tempfiles properly and not use AUTO EXTEND on creating temp tablespace.

  
  
  Oracle database FAQ
  
  

• Temporary Tablespace use is ZERO

  Dear all,
  
  Two weeks ago, that my temporary tablespace size has been incerase and I shrunk it using the following command:
  ALTER TABLESPACE TEMPORARY NARROWING SPACE DUNGEON 500M;
  
  After that, I noticed is degraded the performance of my database. Control of the database of my Oracle 11 g enterprise Edition on MS Windows 2003 Server 32-bit also shows now that the use of the temporary tablespace is ZERO, even if it's only temporary tablespace and available, I mean is online.
  
  Comments or suggestions please?
  
  Thanks in advance

  To assign a temporary tablespace default for the database

  ALTER DATABASE DEFAULT TABLESPACE TEMPORARY temp01 by;

  temp01 is the new temporary tablespace.

  See you soon,.
  http://OCP-DBA.blogspot.com

• Who fills the temporary tablespace?

  Hello
  
  a small question. How can I select which / what statement fills the temporary tablespace?
  
  Thank you!

  Hello

  Check the sessions that are connect to DB, which is to use the temporary tablespace

  Select *.
  session $ v
  where in saddr (select session_addr
  v $ tempseg_usage v
  where v.tablespace = 'TEMP')

  You can query the v$ sort_segment, v$ sort_usage and v$ tempeg_usage know for the temp tablespace.

  -Pavan Kumar N

• How can I change where messages and temporary files are stored?

  How can I change where the profiles messages and temporary files are stored on the disk. because I'm using an SSD for the OS (Matt Mint17) and program files. I oorder to extend the life of the SSD I want to store these files on a different HARD drive. Thank you Ari jowett

  http://KB.mozillazine.org/Moving_your_profile_folder

• When I do exp (expdp), why use the temporary tablespace?

  Dear

  Imp (impdp) is using temporary tablespace.

  but I'm not using tablespace temp, while exp (expdp) is running.

  I think that exp (expdp) will not use temporary tablespace. is it not?

  Please let me know?

  He could.  It must run queries on the data dictionary.  Some of these applications may require the temp tablespace.

  Hemant K Collette