SQL performance problem associated with rownum.

Similar Questions

• Is there a performance issue associated with SPARQL property path?

  Is there a performance issue associated with SPARQL property path?

  When we use paths property is our SPARQL queries, the queries never ends. I have a general problem, or do you have a problem with Jena and jena adapter version?

  We run Oracle 12 c. The Jena adapter has version 12.1.0.1.

  Thank you

  By Oyvind

  None of these requests ends. We have 300000 tuples in the model.

  SELECT subclass, superClass

  TABLE (SEM_MATCH)

  "SELECT? subclass? superclass WHERE {? rdfs:subClassOf + subclass? superclass} LIMIT 10'.

  SEM_Models ('isall1_x'),

  NULL, null, null, null,

  (= T, timeout = 100, qid = 123, STRICT_DEFAULT = F'));

  SELECT subclass, superClass

  TABLE (SEM_MATCH)

  "SELECT? subclass? superclass WHERE {graph? g {? subclass rdfs:subClassOf +? superclass}} LIMIT 10'.

  SEM_Models ('isall1_x'),

  NULL, null, null, null,

  (= T, timeout = 100, qid = 123, STRICT_DEFAULT = F'));

• upgrade 9i Sql performance problems, 10 g

  I've heard several times sql performance problem if db upgrade, what is his fix, this problem SQLs appear in ADDM report with Advisor tunning/access sql to run & its suggestions bugs?

  PL see MOS Doc 466181.1 (10 g companion Upgrade) - this topic is covered in this document

  HTH
  Srini

• (Windows XP) Huge problem associated with Windows XP Signature

  Hi all

  Im having a problem @ home in my PC.

  I activated my Windows XP Activation already. & then I did for most all the total of updates is like 100 +.

  & then I try to install the driver for my ATI graphics card, while installation that I encounter this problem.

  He said,

  Window XP Signature has not be installed or something... then he said, Countiune Installation can damage your computer for blah blah blah

  IM currently are not @ home, I'll reach the homepage in 5-6 hours away.

  I'll post a screenshot of what happens. But if someone get what I say, then please respond ():

  NVM solved (: I remember ATI you have a problem associated with mircosoft then Yes (: thought thanks))

• How to solve the problems associated with the keyboard on my Equium A100-147

  Hello.
  I have a laptop which is the Toshiba standard above and I have a problem with the keyboard.
  Some of the key are defective. For example when I caress symbol I get 'and when I run' @ I @.
  There are several keys that behaves differently (#, |) etc. How can I solve these problems so that keyboards can be used effectively?

  Hello

  Don't panic man ;) This isn't a type of problem.
  You get different or bad signs on the screen because the keyboard layout does not match with the keyboard language setting in regional and language options in Control Panel.

  Please check it and change it in another language; Maybe the United States to the United Kingdom

• the problems associated with writing script

  Hi all

  I use DIAdem 10.2

  (1) I write the Script for the declaration of my scada system. In my report model, there are some common text as user field, period reoprt, designation, report, etc. etc... I designed the dialog box to ask these details in starting, and now I wanted to transfer these details on each page of the report. Is it possible to connect these details with the report model?

  (2) I am facing problem in the allocation of train paths within the script... Is it possible to get rid of problems that arise due to movement of files from file *.sud or *.tdr. It will be great if diadem automatiocally search inside the folder in which the script is saved... so whenever we are going to move the complete file of any statement. It won't create any problem condition save us all files in a folder.

  (3) I crushed my script different system or sometimes need to distribute it. Is it possible to make my script running on another system where tiara is not installed... sort of it, even making available using any platform of programming such as LabVIEW, Measurement studio, CVI etc. etc.

  Thank you very much!

  HS

  HS Hello!

  (1) you can use global variables to solve this task. There are some predefined as "T1" or - I prefer - assign them in the Script with the command GlobalDim and fill them in your data. In the report, you can use the expression '@T1 @' or ' @@MyGlobalDimVar @ ' in the text fields to display the content.

  (2) you can use the AutoActPath variable to all access to the files compared to the running script. If you put all your files next to the script, you can move the package wherever you want in the file system. In all commands of loading like PicFileLoad you must use AutoActPath.

  (3) you can run Scripts DIAdem and dialogs only in DIAdem.

  Matthias

• Fix for common problems associated with Windows Update repeatedly trying to solve the same problem

  When the machine running Windows Update on a Windows XP Professional (SP3 with IE8), the information for the download of the ActiveX bar does not appear. Tried to run the Fix for "Common problems with Windows Update" and it says "Windows Update components must be repaired. Difficulty-it short, reports of success, "Found Themes" saying "one or more components of Windows Update are configured incorrectly". However, still unable to download updates from the information bar does not appear. Repeating the difficulty happens with exactly the same problem i.e. reports etc. but no success still can not download the ActiveX on Windows Update since the information bar never shows up.

  At tried all the suggested solutions I can find for the reported similar problems such as checking the downloads ActiveX security settings, reset Internet Explorer settings, and even resetting Windows Update (Articlce ID 971058) components. Still no luck. Therefore, I am unable to manually check and download updates of Windows security.

  Otherwise my PC works well. Norton Internet Security is installed but did not prevent Windows Update to work on another PC I have. The information bar appears sometimes for other downloads, and it doesn't seem to be a problem on the Windows Update page.

  Please can you help. Thank you.

  No, I'm not not first uninstall IE8 (or IE7) before proceeding with the repair facility...

  Long history, technical, short version: do not uninstall IE8 (and/or IE7) before doing a repair installation (Windows XP only!) leaves the two Internet Explorer and Windows in a State of "confused" or "broken". Your only recourse now is a clean install of Windows (after backup your personal data).

  No, another repair facility won't solve the problem - even if you uninstall IE8 beforehand.

  Follow the instructions in this post of mine in another forum (to-the-letter & in order! ) to restore your computer to a State safe & functional: http://aumha.net/viewtopic.php?f=62&t=44636

  If you need additional assistance with the clean install, please start a new thread in this forum: http://answers.microsoft.com/en-us/windows/forum/windows_xp-system

  Note: The computer must NOT be connected to the internet or local networks (i.e. other computers) in its current state. All your personal data (e.g., banking online & passwords credit card) must be considered at risk, if not already compromised.

  Wish I had better news for you.  Good luck!

  PS: So that registry cleaners can solve some problems (temporarily, at least), they are not & cannot fix what caused the problem. Compare to treat a broken leg with a stick and a couple of BandAids.

• Problems associated with tours to the iPad and Mac

  Hello

  I have an AIR-WLC2112-K9 controller with 1250 TOWERS, customers could connect without problem a few weeks ago, most of the customers are towers, some are Mac and a little
  are iPads.the security is WEP encryption.

  Suddenly the ipads could not associate with towers, a message appears on the passwords, but passwords are correct, temporarily I solved the problem
  After changing to WPA - PSK, but the next day the problem came once more. With Mac, the problem is that they can't rally or many abandons the connection

  In my case one having a RIDE and I have no problems, I can associate whenever I want, and also other towers.

  I intend to upgrade to AIR-WLC2100-K9-6-0-196-0.aes but I don't know if this will solve the problem.

  any suggestion?

  Have a read of this:

  http://www.Cisco.com/Web/software/wireless/deferral/Software_Advisory_6_0_196_0.html

  If you upgrade to a higher version of firmware, Cisco recommends 7.X.

• What are the problems associated with the Microsoft Sidewinder Gamepad?

  The Joystick would not apply entries when you play Microsoft Combat Flight Simulator. original version, version 2, version 3 or Wings over Viet Nam.  It displays a constant change in the control stick.  It calibrates well and fine Tests from the control panel and Settings feature in the game. I uninstalled every program and they started with the installed Joystick and once the game has loaded.

  Hi Laurent,.

  I suggest you follow the link and check if it helps.
  http://support.Microsoft.com/kb/294672

  I hope this helps.

• Features of the power manager and other problems associated with the T510

  For the better part of 5 years, I was a happy user of an IBM Z60m and decided it was time to move my z60 to my son and buy a new T510.  Well, I have after several weeks of property I can honestly say I'm irritated and frustrated by several current issues and I'm ready to send back all.

  Starting from the moment I pulled it out of the box I was having problems of power management.  I was on Microsoft help forums, called the lenovo support and spent countless hours on blogs and forums looking for help.   No matter what I do in the put lenovo on arrangements to take away my computer goes to stanby after one minute of inactivity and then wonder my windows password.  After a full day to insert my password my frustration level is off the chart.  I removed the password in the settings of the user who has not helped.  I changed the global settings to disable password in stanby mode which did not help.  I changed the function to optimize power and others, but none of it helped.

  Beyond these problems... I inserted two different discs to insert new programs and my system kept telling me that he did not read either.  I first thought they were zero but my old laptop ibm read without problem.

  So there you have it.

  Are you sure that the system is set the mode after 1 minute?  Or is the screen is locked?

  Try this:

  1. right click on the desktop and choose "Customize".

  2. click on "screen saver" in the lower right corner

  3. uncheck the box that says "On Resume, the logon screen"

  Which solves your problem?

• Serious performance problems, base with Lightroom CC that I can't explain.

  I know Lightroom CC took some flak recently due to the recent update, personally I'm fairly happy with the dehaze brush and new camera profiles.

  However, I am not satisfied is how the simple basic tasks appear slower.

  I mean what basis...

  I created a new catalog for Lightroom 5 and each with 50 700 MB Tiffs in CC.

  I timed it export TIFF - Jpeg @80 % quality and 5000 px on the long edge.

  5 Lightroom completed in 01:58 sec

  CC of Lightroom (last) finished at 02:48.

  One thing that stands out, it's that with Lightroom 5, the CPU usage was constant from 33 to 36 percent. With CC, it is 17% and 60% and it bounced around in this beach all along.

  I7, 3930K 12 kernel running.

  The new brush Dehaze is also available in ACR 9.2. You can revert to a version of LR work and continue to use this brush on the images that need it.

• My speakers produce an ear piercing rumble sometimes that does not seem to be associated with a particular activity. Any ideas as to the source and the possible fix?

  It seems that the problem associated with my video/audio card that has been recently replaced due to the failure of a similar video/audio card earlier.

  (ViXS Pure TV-U4888 NTSC/ATSC Combo).

  Hi G_N_P_HL,

  1. did you other changes on the computer?

  2. when the problem occur?

  3. when and how does the ear piercing rumbling stops?

  First, make sure you don't have any programs or applications or in the course of performance when the problem occurs.

  It is possible that some third-party programs installed on the computer is causing the problem.

  I suggest that you perform a clean boot and check.

  To help resolve the error and other messages, you can start Windows Vista or Windows 7 by using a minimal set of drivers and startup programs. This type of boot is known as a "clean boot". A clean boot helps eliminate software conflicts.

  See the link below to learn more about how to clean boot.

  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

  http://support.Microsoft.com/kb/929135

  Reset the computer to start as usual

  When you are finished troubleshooting, follow these steps to reset the computer to start as usual:

  (a) click Start, type msconfig in the search box and press ENTER.

  (b) If you are prompted for an administrator password or for confirmation, type your password or click on continue.

  (c) under the general tab, click the Normal startup option, and then click OK.

  (d) when you are prompted to restart the computer, click on restart.

  I hope this helps!

  Halima S - Microsoft technical support.

• SDO_RELATE within PL/SQL query with rownum clause runs slowly on 12 c - works great on 10 g

  Hello

  I use the database 12.1.0.2 with a node 2 RAC on Windows.

  I am struck by a really weird performance problem with a particular query.  Bear with me while I try to explain...

  I have a chart with lines 30 sdo_geometry million, in 7 partitions with a local partitioned spatial index divided.  Called BIG_PARTITIONED_TABLE for this example.

  I query the table to search for one line with a geometry that is equal to the geometry of my request.  In this case I use sdo_relate with "mask = equal".  Instantly returns:

  SQL> select id, geometry
    2  from       BIG_PARTITIONED_TABLE o
    3  where      sdo_relate(o.geometry, sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
    4     SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)), 'mask=equal') = 'TRUE'
    5  and rownum = 1;
  
          ID
  ----------
  GEOMETRY(SDO_GTYPE, SDO_SRID, SDO_POINT(X, Y, Z), SDO_ELEM_INFO, SDO_ORDINATES)
  -------------------------------------------------------------------------------
  2.5405E+12
  SDO_GEOMETRY(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272))
  
  Elapsed: 00:00:00.10
  
  

  But if I put the same query in PL/SQL, so it takes 21 seconds:

  SQL> declare
    2     l_id number;
    3     l_geom sdo_geometry;
    4     l_window_geom sdo_geometry;
    5  begin
    6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
    7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
    8
    9     select id, geometry
  10     into l_id, l_geom
  11     from    BIG_PARTITIONED_TABLE o
  12     where   sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE'
  13     and rownum = 1;
  14
  15  end;
  16  /
  
  PL/SQL procedure successfully completed.
  
  Elapsed: 00:00:21.13
  
  

  If I remove the "rownum = 1", then it returns instantly:

  SQL> declare
    2     l_id number;
    3     l_geom sdo_geometry;
    4     l_window_geom sdo_geometry;
    5  begin
    6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
    7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
    8
    9     select id, geometry
  10     into l_id, l_geom
  11     from    BIG_PARTITIONED_TABLE o
  12     where   sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE';
  13
  14  end;
  15  /
  
  PL/SQL procedure successfully completed.
  
  Elapsed: 00:00:00.03
  
  

  If using sdo_equal instead of sdo_relate and keep the "rownum = 1", then it returns instantly.

  SQL> declare
    2     l_id number;
    3     l_geom sdo_geometry;
    4     l_window_geom sdo_geometry;
    5  begin
    6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
    7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
    8
    9     select id, geometry
  10     into l_id, l_geom
  11     from    BIG_PARTITIONED_TABLE o
  12     where   sdo_equal(o.geometry, l_window_geom) = 'TRUE'
  13     and rownum = 1;
  14
  15  end;
  16  /
  
  PL/SQL procedure successfully completed.
  
  Elapsed: 00:00:00.13
  
  

  Here is a comparison of the plans to explain.  First, here's the good thing, that is using the spatial index (BIG_PARTITIONED_TABLE_SPIND):

  select id, GEOMETRY
  FROM
  BIG_PARTITIONED_TABLE O WHERE SDO_EQUAL(O.GEOMETRY, :B1 ) = 'TRUE'
  AND ROWNUM = 1
  
  call     count       cpu    elapsed       disk      query    current        rows
  ------- ------  -------- ---------- ---------- ---------- ----------  ----------
  Parse        1      0.00       0.00          0          0          0           0
  Execute      1      0.01       0.02          0         39          0           0
  Fetch        1      0.00       0.01          0         31          0           1
  ------- ------  -------- ---------- ---------- ---------- ----------  ----------
  total        3      0.01       0.04          0         70          0           1
  
  Misses in library cache during parse: 0
  Optimizer mode: ALL_ROWS
  Parsing user id: 263     (recursive depth: 1)
  Number of plan statistics captured: 1
  
  Rows (1st) Rows (avg) Rows (max)  Row Source Operation
  ---------- ---------- ----------  ---------------------------------------------------
           1          1          1  COUNT STOPKEY (cr=99 pr=0 pw=0 time=43307 us)
           1          1          1   PARTITION RANGE ALL PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43297 us cost=0 size=66 card=1)
           1          1          1    TABLE ACCESS BY LOCAL INDEX ROWID BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43280 us cost=0 size=66 card=1)
           1          1          1     DOMAIN INDEX  BIG_PARTITIONED_TABLE_SPIND (cr=98 pr=0 pw=0 time=43250 us)
  
  

  Then the slow that does not use the spatial index.

  select id, GEOMETRY
  FROM
  BIG_PARTITIONED_TABLE O WHERE SDO_RELATE(O.GEOMETRY, :B1 , 'mask=equal') = 'TRUE'
    AND ROWNUM = 1
  
  call     count       cpu    elapsed       disk      query    current        rows
  ------- ------  -------- ---------- ---------- ---------- ----------  ----------
  Parse        1      0.01       0.00          0          0          0           0
  Execute      1      0.03       0.03          0       1123          0           0
  Fetch        1     24.25      24.25          0     499429          0           1
  ------- ------  -------- ---------- ---------- ---------- ----------  ----------
  total        3     24.30      24.29          0     500552          0           1
  
  Misses in library cache during parse: 1
  Misses in library cache during execute: 1
  Optimizer mode: ALL_ROWS
  Parsing user id: 263     (recursive depth: 1)
  Number of plan statistics captured: 1
  
  Rows (1st) Rows (avg) Rows (max)  Row Source Operation
  ---------- ---------- ----------  ---------------------------------------------------
           1          1          1  COUNT STOPKEY (cr=499532 pr=0 pw=0 time=24289612 us)
           1          1          1   HASH JOIN RIGHT SEMI (cr=499532 pr=0 pw=0 time=24289586 us cost=32 size=144 card=1)
           1          1          1    VIEW  VW_NSO_1 (cr=103 pr=0 pw=0 time=31110 us cost=29 size=98016 card=8168)
           1          1          1     COLLECTION ITERATOR PICKLER FETCH SDO_PQRY (cr=103 pr=0 pw=0 time=31104 us cost=29 size=16336 card=8168)
    16914892   16914892   16914892    PARTITION RANGE ALL PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=28678375 us cost=3 size=6600 card=100)
    16914892   16914892   16914892     TABLE ACCESS FULL BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=23406547 us cost=3 size=6600 card=100)
  
  

  I tried adding an indication / * + index (o BIG_PARTITIONED_TABLE_SPIND) * / but that did not help.

  I am struck this issue during testing of upgrade 10.2.0.5 to 12.1.0.2.  The query works perfectly on 10g - we note only that this question on 12 c.

  I can't use sdo_equal as the real mask that we want is equal + dommagescausdspar + covers.  I'm just using equal here to simplify the test.

  I use "rownum = 1" because I want to just the first result.  In practice I can rewrite probably is a FOR LOOP, I get out after the first result, but that seems all just awful.

  Any ideas?  If anyone has seen anything like this before?  Its an optimizer delivers really so I'm going to cross post the SQL Forum after a certain time, but thought I would post it here first.

  Thank you

  John

  Hi John,.

  Can you please try the following before your slow queries event?

  "ALTER session set events ' trace 54669 name context forever."

  Thank you

  Ying

• Uninstall/reinstall my error message sim flight "this file has no program associated with it for performing this action.

  original title: how to create a binding file

  I had to uninstall/reinstall my Simulator of flight and went on to play and this poped message in 'this file does not have a program associated with it for performing this action. " Create an association in the set Associations control panel. " How to create an association?

  Hello

  1. you have made no changes to the computer before the broadcast took place?
  2. What is the exact error code that you get?
  3. what operating system do you use?

  Method 1
  Uninstall the game completely, try the steps from the following link:

  Problems installing and uninstalling programs on Windows computers
  http://support.Microsoft.com/kb/2438651

  Method 2
  Perform the clean boot and then install the game in administrator mode.

  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
  http://support.Microsoft.com/kb/929135
   
  Note: Don't forget to restart your computer as usual by following step 7 after installing the game.

• error message "this file does not have a program associated with it to perform this action." at the opening of the local drive E:

  Hey,.

  I have a problem and I can't understand it. This error message comes out when I opened only local disk E:

  I have 2 HDD on my computer... 130 and 250 GB of both of them I do 2 partion so there C: D: E: and F:

  C: is my windows data and 3 others my data. When I open my computer and then click on local disk E: error message comes out.

  the error message is "this file does not have a program associated with it for performing this action.". but local disk E: can open it using Explorer tree (left side of the windows Explorer) or windows Explorer.

  THX

  Hi, Flix_is_here,

  Download this file and unzip it and then double click on it and let it run, it will restore most all default files for XP associations

  http://social.technet.Microsoft.com/forums/en/itproxpsp/thread/b48c2165-85f6-48bd-ac0f-be51dbf87f3d