Temp tablespace - why so great?

Similar Questions

• High TEMP tablespace usage

  In our DB Oracle 11 GR 1 material, we are facing a problem of use high temporary tablespace...

  Currently, I did the size of tablespace temp that 200 GB, but im afraid, that will be used too much upward.

  My concern is

  1. when I checked in the sessions of $ gv, gv$ sql table, SQL not runs, which uses temporary spaces, but the current use of the stand space temp near 75%, i.e. 175 GB!

  I read on other forums that temp space may not immediately released. But 175GB is too much in my opinion

  I tried the sub queries that will tell which session uses the amount of temporary space. But normally the same query will run and 97 GB of temp tablespace is sufficient to run the query.

  Col SID_SERIAL to a10

  Col OSUSER for a10

  Col MODULE for a10

  Pass PROGRAM for a10

  SELECT S.SID | ',' || S.Serial # sid_serial, S.username, S.osuser, P.spid, S.module,.

  P.Program, SUM (T.blocks) * TBS.block_size / 1024 / 1024 mb_used, T.tablespace,.

  Count (*) instructions

  V $ sort_usage T, v$ session S, dba_tablespaces of TBS, v$ process P

  WHERE T.session_addr = S.saddr

  AND S.paddr = P.addr

  AND T.tablespace = TBS.tablespace_name

  GROUP OF S.sid, S.serial #, S.username, S.osuser, P.spid, S.module,.

  P.Program, TBS.block_size, T.tablespace

  ORDER BY sid_serial;

  or

  Col hash_value to a40

  Col tablespace for a10

  user name of collar for a15

  set linesize 132 pagesize 1000

  SELECT s.sid, s.username, u.tablespace, s.sql_hash_value: ' /' | u.sqlhash hash_value, u.segtype, u.contents, u.blocks

  V $ session s, v$ tempseg_usage u

  WHERE s.saddr = u.session_addr

  order of u.blocks;

  TABLE OF CONTENTS-SID USERNAME TABLESPACE HASH_VALUE SEGTYPE BLOCKS

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

  819 RDW12SYS TEMP 1144004357/3631869000 HASH 2921088 TEMPORARY

  819 RDW12SYS TEMP 1144004357/3631869000 HASH 11505792 TEMPORARY

  Query:

  INSERT INTO MG_RDW_INTRANSIT_DIFF

  (SELECT LC. LOC_IDNT, PRD. ITEM_IDNT, INV. F_I_IN_TRNST_QTY

  OF INV_ITEM_LD_DM_V INV.

  LC ORG_LOC_DM,

  TIME_DAY_DM DAT,

  PROD_ITEM_DM PRD

  WHERE INV. ITEM_KEY = PRD. ITEM_KEY

  AND INV. LOC_KEY = LC. LOC_KEY

  AND INV. DAY_IDNT = DAT. DAY_IDNT

  AND INV. F_I_IN_TRNST_QTY <>0

  AND DAT. DAY_DT = (SELECT CURR_LOAD_DT FROM MAINT_LOAD_DT_DM)

  LESS

  SELECT TO_CHAR (SOH. (RISK OF CONFUSION), SOH. AGENDA, SOH. IN_TRANSIT_QTY

  SOH MG_ITEM_LOC_SOH_RDW_DAILY

  WHERE SOH. IN_TRANSIT_QTY <>0)

  SQL > @temp

  NOM_TABLESPACE FREESPACEGB USEDSPACEGB TOTALSPACEGB INSTANCE_NAME HOST_NAME

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

  TEMP 66.730 rdwdb1 111,318 178.049 rdw

  But why last 2 days using 190 GB of temp tablespace.

  Can find us why all of a sudden begins to use the temp tablespace more.

  There is no change in the query.

  Excessive temp space is more often associated with inaccurate estimates (too weak) to sort and hash operations.

  Solve the excessive use temp space is usually a two-step process:

  1. find SQL with excessive temperature, get the metric of effective implementation of the enforcement problem, look for estimates inaccurate when comparing estimates cardinalities real vs.

  2. once the estimates are correct, if the temp space usage is always high then consider sizing of manual activities.

  Although the use of temporary space has increased sharply, then either you had a sudden increase in the data or you have had a change suddenly in the execution plan.

  Use the AWR and ASH to study, subject to the license.

  If it is a change suddenly in the execution plan, then you have the easy option to use a plan sql database or a sql profile to lock in an older implementation plan with a lower use of temporary space.

• Full Temp tablespace

  Hello
  
  The tablespace temp on our database suddenly began to fill.
  
  It has 4 GB of ram on your server, about 1.3 G is used by the operating system,
  , 1.7 bg the sga and 700 MB by PGA target parameter.
  
  We use the DSO, then the sort_area_size parameter does not come into play.
  
  All ratios are fine, but once the temp tablespace is almost full, things grind to stop.
  
  Someone at - it advice on the best way forward.
  
  I put statspack to run at the time.
  
  I appreciate ram is low, but I am confused as to why he suddenly began to occur.
  
  Thanks for reading.

  PGA_TARGET is a target.

  fixed lines 200
  Select * from v_$ pgastat;

  and look at the maximum used.

  There are also counselors, that you can watch in the views or dbconsole (if permitted), you can watch advice of the pga and pga memory utilization details. If you do a lot of executions multipass, which would slow and use a lot of temp. Temp tends to stay fully, docs of MOS and comments here that explain it.

  Adds the numbers you have validated, looks that you run right up to the border in normal times, a little more use of the user and you jump off the cliff. You may need to reduce your sga. How many users are using a shared server, what happens to change things?

• SMON do not clear my temp tablespace

  Hi guys,.
  
  even after I stop and restart of my cases, my temp tablespace shows it as having 27.5 to 30 used. Why is this happening?
  
  Thank you

  but other than the ability to be created quickly, I don't see any other benefits

  You read the 'Other considerations' section of this article on orafaq you read.
  1 NOLOGGING
  2 No. ST Enqueue and UET claim of $ $/ FET
  3. TEMPORARY file doesn't have to be backed up (RMAN TEMPFILEs excludes implicitly)

  There are a lot of benefits.

  Hemant K Collette
  http://hemantoracledba.blogspot.com

• Using bulk collect into with assistance from the limit to avoid the TEMP tablespace error run out?

  Hi all

  I want to know if using bulk collect into limit will help to avoid the TEMP tablespace error run out.

  We use Oracle 11 g R1.

  I am assigned to a task of creating journal facilitated for all tables in a query of the APEX.

  I create procedures to execute some sql statements to create a DEC (Create table select), and then fires on these tables.

  We have about three tables with more than 26 million records.

  It seems very well running until we reached a table with more than 15 million record, we got an error says that Miss tablespace TEMP.

  I googled on this topic and retrieve the tips:

  Use NO LOG

  Parallel use

  BULK COLLECT INTO limited

  However, the questions for those above usually short-term memory rather than running out of TEMPORARY tablespace.

  I'm just a junior developer and does not have dealed with table more than 10 million documents at a time like this before.

  The database support is outsourced. If we try to keep it as minimal contact with the DBA as possible. My Manager asked me to find a solution without asking the administrator to extend the TEMP tablespace.

  I wrote a few BULK COLLECT INTO to insert about 300,000 like once on the development environment. It seems.

  But the code works only against a 000 4000 table of records. I am trying to add more data into the Test table, but yet again, we lack the tablespace on DEV (this time, it's a step a TEMP data)

  I'll give it a go against the table of 26 million records on the Production of this weekend. I just want to know if it is worth trying.

  Thanks for reading this.

  Ann

  I really need check that you did not have the sizes of huge line (like several K by rank), they are not too bad at all, which is good!

  A good rule of thumb to maximize the amount of limit clause, is to see how much memory you can afford to consume in the PGA (to avoid the number of calls to the extraction and forall section and therefore the context switches) and adjust the limit to be as close to that amount as possible.

  Use the routines below to check at what threshold value would be better suited for your system because it depends on your memory allocation and CPU consumption.  Flexibility, based on your limits of PGA, as lines of length vary, but this method will get a good order of magnitude.

  CREATE OR REPLACE PROCEDURE show_pga_memory (context_in IN VARCHAR2 DEFAULT NULL)

  IS

  l_memory NUMBER;

  BEGIN

  SELECT st. VALUE

  IN l_memory

  SYS.v_$ session se, SYS.v_$ sesstat st, SYS.v_$ statname nm

  WHERE se.audsid = USERENV ('SESSIONID')

  AND st.statistic # nm.statistic = #.

  AND themselves. SID = st. SID

  AND nm.NAME = 'pga session in memory. "

  Dbms_output.put_line (CASE

  WHEN context_in IS NULL

  THEN NULL

  ELSE context_in | ' - '

  END

  || 'Used in the session PGA memory ='

  || To_char (l_memory)

  );

  END show_pga_memory;

  DECLARE

  PROCEDURE fetch_all_rows (limit_in IN PLS_INTEGER)

  IS

  CURSOR source_cur

  IS

  SELECT *.

  FROM YOUR_TABLE;

  TYPE source_aat IS TABLE OF source_cur % ROWTYPE

  INDEX BY PLS_INTEGER;

  l_source source_aat;

  l_start PLS_INTEGER;

  l_end PLS_INTEGER;

  BEGIN

  DBMS_SESSION.free_unused_user_memory;

  show_pga_memory (limit_in |) "- BEFORE"); "."

  l_start: = DBMS_UTILITY.get_cpu_time;

  OPEN source_cur.

  LOOP

  EXTRACTION source_cur

  LOOSE COLLECTION l_source LIMITED limit_in;

  WHEN l_source EXIT. COUNT = 0;

  END LOOP;

  CLOSE Source_cur;

  l_end: = DBMS_UTILITY.get_cpu_time;

  Dbms_output.put_line (' elapsed time CPU for limit of ')

  || limit_in

  || ' = '

  || To_char (l_end - l_start)

  );

  show_pga_memory (limit_in |) "- AFTER");

  END fetch_all_rows;

  BEGIN

  fetch_all_rows (20000);

  fetch_all_rows (40000);

  fetch_all_rows (60000);

  fetch_all_rows (80000);

  fetch_all_rows (100000);

  fetch_all_rows (150000);

  fetch_all_rows (250000);

  -etc.

  END;

• ORA-1652: unable to extend temp segment of 32 in the TEMP tablespace

  No special work is running. Can you tell how to handle this problem?

  Any way to free up space in tablespace temp?

  Thank you.

  alter tablespace temp retractable Dungeon space 100M;

  have control over this post, very good site for examples, concise what to do and how: http://oracle-base.com/articles/11g/temporary-tablespace-enhancements-11gr1.php

  However, per above, you will need to check what users are doing. If they are unnecessarily large kinds they will blow the temp tablespace, but a tablespace temp used in respect of normal operations is very good.

• history of the temp tablespace?

  Hello

  In Oracle 11G with AWR.

  Is it possible to check the history of temp?

  dba_temp_free_space shows me the current temp tablespace.

  And dba_hist_tablespace_stat works with temp tablespace.

  Could you help me please?

  Thank you very much and sorry for my English!

  
  select inst_id
  ,      session_id
  ,      session_serial#
  ,      sql_exec_id
  ,      sql_exec_start
  ,      sql_id
  ,      sql_plan_hash_value
  ,      sql_plan_operation
  ,      sql_plan_line_id
  ,      min(sample_time)
  ,      max(sample_time)
  ,      max(temp_space_allocated)/power(1024,2) temp_mb
  from   gv$active_session_history --dba_hist_active_sess_history
  where  temp_space_allocated > 0
  group by
         inst_id
  ,      session_id
  ,      session_serial#
  ,      sql_exec_id
  ,      sql_exec_start
  ,      sql_id
  ,      sql_plan_hash_value
  ,      sql_plan_operation
  ,      sql_plan_line_id
  order by max(sample_time) desc;
  

• Oracle XE TEMP tablespace issue

  Oracle XE 11 GR 2
  Linux RHEL 5.8
  -----------------------
  
  The following SQL code shows a TEMP tablespace exists:
  
  Select nom_tablespace in dba_tablespaces;
  
  TABLESPACE_NAME
  ------------------------------
  SYSTEM
  SYSAUX
  UNDOTBS1
  TEMP
  USERS
  APEX
  
  But what follows doesn't show any data files associated with the TEMP tablespace:
  
  Select nom_tablespace, file_name in dba_data_files;
  
  NOM_TABLESPACE FILENAME
  -----------------------------------------------------
  USERS /u01/app/oracle/oradata/XE/users.dbf
  
  SYSAUX /u01/app/oracle/oradata/XE/sysaux.dbf
  
  UNDOTBS1 /u01/app/oracle/oradata/XE/undotbs1.dbf
  
  SYSTEM /u01/app/oracle/oradata/XE/system.dbf
  
  APEX /u01/app/oracle/product/11.2.0/xe/dbs/APEX01.dbf
  
  What gives? I chose the default configuration of Oracle XE out-of-the box. If it's ok (?) where the sorting is done in Oracle XE?
  Thank you

  user601798 wrote:
  Oracle XE 11 GR 2
  Linux RHEL 5.8
  -----------------------

  The following SQL code shows a TEMP tablespace exists:

  Select nom_tablespace in dba_tablespaces;

  TABLESPACE_NAME
  ------------------------------
  SYSTEM
  SYSAUX
  UNDOTBS1
  TEMP
  USERS
  APEX

  But what follows doesn't show any data files associated with the TEMP tablespace:

  Select nom_tablespace, file_name in dba_data_files;

  NOM_TABLESPACE FILENAME
  -----------------------------------------------------
  USERS /u01/app/oracle/oradata/XE/users.dbf

  SYSAUX /u01/app/oracle/oradata/XE/sysaux.dbf

  UNDOTBS1 /u01/app/oracle/oradata/XE/undotbs1.dbf

  SYSTEM /u01/app/oracle/oradata/XE/system.dbf

  APEX /u01/app/oracle/product/11.2.0/xe/dbs/APEX01.dbf

  What gives? I chose the default configuration of Oracle XE out-of-the box. If it's ok (?) where the sorting is done in Oracle XE?
  Thank you

  Select nom_tablespace, file_name from dba_TEMP_files;

• warning when the temp tablespace is full

  Hi all
  
  on my DB 11.2 comes from time to time situation running the full temp tablespace. It sucks just two seconds and when the dba is not noticed, the tablespace is already almost vacuum. Is it a way somehow to create as a "reminder - notify" triggering te when the temp tablespace for us will say a lot of 70%.
  That "remember - notify" runs the sql statement look in the parameter $ v, process$ v, v$ sort_usage, v for sessions of problem $session.
  Thanks and rgds,
  
  Alex

  You do not use dbcontrol?
  You can easily configure dbcontrol to do this, or use the package dbms_server_alert directly.
  The starting point is as usual... reading documentation.

  ---------
  Sybrand Bakker
  Senior Oracle DBA

• Problem filling temp tablespace

  I have a query that returns the CLOB 200 K values and fills the tablespce temp. Is there a way to clean the cursor selection (or something like that) while I am processing only 1000 rows at a time or a beter sql statement.
  
  query:
  Select taskdata in the rn_schedule_task where taskdata like ' % type = scripts "script %';"
  
  I want to encapsulate in a plsql like this block:
  
  DECLARE
  v_command_script CLOB.
  CURSOR commandscripts
  Select
  rn_schedule_task taskData, where taskdata like ' % type = scripts "script %';"
  BEGIN
  Open commandscripts;
  LOOP
  extraction commandscripts INTO v_command_script;
  When exit commandscripts ROWCOUNT > 20% or commandscripts % NOTFOUND;
  dbms_output.put_line (dbms_lob.substr (v_command_script, 255));
  end LOOP;
  NARROW Commandscripts;
  end;
  /

  user634156 wrote:
  The table has the 6mil and select lines will not be able to be executed in memory only so that it uses the temp tablespace

  Since you are the disk queue, no TEMP is necessary.

  or so I understand.

  you misunderstand works in Oracle

• Temp tablespace

  Hi all
  I have a question here regarding the temp tablespace. I googled a bit and the documentation to understand some of the temp tablespace digital also searched. I got to know this temporary tablespace default cannot be deleted, unless you create a temp tablespace, so if we then deletes the temp in os level data files will happen (will be system tablespace becomes the temp tablespace?). In the case of other tablespaces if we drop the operating system level data files, then it will throw error during the startup it will show as the data files is not found and recovery in necessary... when that happens in case temporary files? It will throw an error? I also read that recover the temp tablespace is not possible and only a drop/recreate is possible is that true?
  
  Thank you
  Kris

  KRIS wrote:
  Hi all
  I have a question here regarding the temp tablespace. I googled a bit and the documentation to understand some of the temp tablespace digital also searched. I got to know this temporary tablespace default cannot be deleted, unless you create a temp tablespace, so if we then deletes the temp in os level data files will happen (will be system tablespace becomes the temp tablespace?). In the case of other tablespaces if we drop the operating system level data files, then it will throw error during the startup it will show as the data files is not found and recovery in necessary... when that happens in case temporary files? It will throw an error? I also read that recover the temp tablespace is not possible and only a drop/recreate is possible is that true?

  There is only a temporary tablespace that can be set for the entire database. If this temporary tablespace file is deleted, it won't effect the database works as temporary files will not be part of the recovery process. In the absence of temporary storage space, system temp segment would start getting used by users as well. If you have lost a temporary file, when you start using it, it would lift the error that the file is not there. There will be no message you demonstrated that if the file is deleted explicitly.

  HTH
  Aman...

• temp tablespace size

  Hello
  is there a maximum size that I must not exceed to my TEMP tablespace (as long as I have the hard drive space) in a database of 10gr 2 Please?
  
  Thank you.

  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14237/limits002.htm#i287915

  bigfile Tablespaces

  A bigfile tablespace contains only a single data file or temporary file, which can contain up to about 4 billion (2 ^ 32) blocks. The maximum size of the single data file or tempfile is 128 tera-bytes (to) for a storage space with blocks of 32 KB and 32 TB for a tablespace with 8 K blocks.
  

• How to reduce the temp tablespace data file

  Dear all,
  
  I'm using Oracle 11 g on Windows 2003. Due to a SQL select query my temp tablespace data file size has increased significantly. How can I reduce the data temp file?
  
  Thank you

  http://download.Oracle.com/docs/CD/B28359_01/server.111/b28310/tspaces007.htm#CFHJFBBJ

• 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.

• Application of segment SS Enqueue and fate on 8.1.7.4 after attempting to drop the temp tablespace

  We have a case opened with the support of the Oracle, but I thought I'd throw it out there if it's ok.

  We have a 8.1.7.4 database running on HP - UX 11.11 PA-Risc and it looks like any session that wants to use a temp space is hung a SS enqueue or in some cases is waiting on a waiting "sort request of the segment.

  Saturday, we tried to move all users to a new temporary tablespace and drop the old one but the drop suspended and we control-C out of it.  We put the users to the original temp.  Note that both the old and the new temporary tablespaces are managed locally.

  Before trying to leave falling the old tablespace temp that we killed the existing sessions, including one who had worked for two weeks and has been hooked on SMON.

  Query v$ fast_start_transactions and x$ ktuxe indicate that SMON is back any large transaction.

  In addition, SMON seems to run this query always:

  SELECT file #, block #, LENGTH

  The UET $

  WHERE the ts # =: 1 AND segfile # =: 2 AND segblock # =: 3 AND ext # =: 4

  Here are the locks held by SMON for what it's worth:

  ADDR KADDR SID TY ID1 ID2 LMODE CTIME BLOCK REQUEST
  ---------------- ---------------- ---------- -- ---------- ---------- ---------- ---------- ---------- ----------
  C000000028C43CD8 C000000028C43CF8 74 16 4 0 59610 TT 8 0
  C000000028C43C68 C000000028C43C88 TS 74-666633304 8 6 0 0 59650
  C000000028C1CB38 C000000028C1CB58 8 ST 0 0 6 0 13 0

  ST, space management Transaction
  TS, temporary Segment (also TableSpace)
  TT, temporary Table

  Same database has a recovery scenario about a month or to go back due to some deleted data files.  Also, during the holidays, we had to rebuild a global index huge and increased our tablespace temp to get it, which is why we strive to reduce now create a smaller.  In addition, creating index was still holding in the tablespace existing managed dictionary so we ended up move the index to a managed locally.  Also, UET$ has about 33,000,000 lines and most of the data is in the dictionary managed tablespaces.  Dba_free_space queries typically take 30 minutes to return - that is, we know it is messed up and has been so for a long time.

  Pleasure for us.  If anyone has an idea that would be great.

  -Bobby

  Tablespace name I really used corresponded to ts #= 74 in v$ tablespace.

  We plan to rebuild the other indexes in this space in a new locally managed tablespace and then drop the tablespace existing managed dictionary.  My only question is whether corruption will drop the tablespace to fail.

  Hi Bobby,.

  I'm not sure of your current situation hope now, that's better.

  I couldn't find the time to reply back yesterday. Looking at the huge amounts of temporary segments in your tablespace (74), just made me think if you or Support of Oracle were you made aware of an event DROP_SEGMENTS which is an event of users can invoke to clear temporary segments. It deletes the temporary segments such as the SMON in the background. This event has the advantage of not having the CPU consumed by SMON.

  47400.1 Note : EVENT: DROP_SEGMENTS - forcing cleanup of TEMPORARY segments

  There is also a method to the dictionary (changes) patch (not recommended if not). You can enlist the help of Oracle Support

  The method is to identify the segment (which you already have) and update the segment_type from temporary to 999.

  388619.1 Note: last resort when SMON takes 100% of CPU

  Kind regards

  Suntrupth