Performance optimization

Similar Questions

• Nobody wants that my experience of performance optimization?

  I worked as a DBA for 2 years in major where my work was limited to the monitoring and performance optimization
  and if I had No opportunity to get experience of backup & restore, RMAN and other basic DBA responsibilities.
  
  I had to leave in July the year last because of my few other career interests. Unfortunately, who did not
  
  filled.
  January 15 so I decided to restart my career as a DBA.
  I went to a 3 interviews, but every time that my lack of experience in backup & recovery and other DB Coreresponsibilities is not my strongest case in interviews.
  I'm losing confidence on my chances of getting a job. Most (about 95%) of IT companies want minimum 3 years experience and that too with Backup & Recovery.
  
  I did not yet OCA (I spent only 1z0 042). So I intend to give 1z0 - 007 to make OCA.
  
  My questions at all?
  1.*how hold much value OCA in the market * with 2 years of experience (I am based in India, specifically of Pune)
  2 How can I get the hands-on experience of backup and recovery at home itself? + _
  3. is not the financial power to go to a part of the TRAINING of the OCP, so how can I make my resume look strong?
  4. any company refuses a DBA who has not had experience in Backup & Recovery. Is the performance tuning and monitoring experience such a waste?
  
  See you soon,.
  Malika

  That's the point!

• DLL - vista antivirus 2008 - performance optimizer - spyhunter3

  Hi all

  New computer laptop and in 2 days im infected with various villains who are waiting.

  I downloaded Spyhunter3 in a moment of madness as a result of a search for info on 'vista antivirus 2008' is the first mover to appear. Since then, I have not found any reviews or comments that make me feel good in the past for £30!

  Analysis indicates its cleaned up that system but the messages DLLs appear on the re-boot and vista Antivirus 2008 - optimizer performance jump in and take over frequently, my free 90 days McAfee product is also does not remove one of them. IM browsing through firefox but still once not without result.

  Quick wins?

  Thank you.

  
  

• ASO performance optimization.

  Can you please send me the link to update on the optimization of the performance of the ASO
  
  Thank you

  Buy the book of Cameron and read chapters Dan and Gary and search WORLD archive. I don't know if there is anything better that is available through these two sources of it.

• Satellite A110-103 - 2 GB RAM - gaming performance optimization - SOLUTION

  Hello

  For those of you who have 2 GB of RAM installed on the laptop and want to play games like f.e.a.r.2 PROJECT ORIGIN, it's performance that I have tested on my Toshiba Satellite A110-103!

  If you want to add 2 GB of RAM or more to your laptop please read [this post and my experience with upgrades RAM | http://forums.computers.toshiba-europe.com/forums/message.jspa?messageID=153005#153005]! It could help you save money!

  Before you install the 2 GB of RAM, I used to have a paging file 4096 defined in Windows for drive C.
  After that I installed the 2 GB of RAM, I wanted to play f.e.a.r.2 Project Origin on low heat.
  However, the game played horrible with low display rate. So I wanted to know if there is a way to disable virtual memory (swap file) and only use real RAM.

  Most of the discussions about the paging files disabling said it there is no way or point by doing this!
  Well, I decided to give it a try!

  I disabled the paging file to * start-> Control Panel - > system-> advanced-> performance-> settings-> advanced-> virtual memory - > Exchange-> no paging file *. I restarted my laptop and after the reboot in my case I could see the big difference in speed!

  TEST: I opened FEAR2 - Project Origin started playing and my character's movement, where much more receptive and lag-free! : D

  Conclusion: In my case disable virtual memory (swap file) really boosted my gaming experience! And I play on an ATI X200M with 256 MB shared memory card!
  Try this and if you get good results please post them here! I have

  Best regards
  Marius Gigi

  Hi dude

  Thanks for this message
  Usually the pagefile should help you increase the performance of RAM
  USIN the page file, the data that must be stored in RAM would be transferred to the HARD disk and therefore a pieces of RAM would be free

  However, thank you for this return of experience and your comments!

• The best way to learn performance optimization?

  An area that has been lacking in my DBA knowledge was instance tuning. I'm pretty adept at SQL statement tuning (at least, to interpret plans and change SQL or a structure to make them better), but quite ignorant of the instance listening - how to set the good numbers of parameters, what to watch to make sure that everything is balanced, etc..
  
  Someone at - it care to recommend a book on this subject?
  
  I would prefer something that deals with 11g, but I guess that a book of 10, 2 - old era would be nice. I hope ever return to 9i ;-)
  
  Ideally, something that deals with approaches non - OEM - Oracle seems to assume everyone has bought OEM (and the pack of D & T), but this isn't always the case.
  
  Thank you!

  The 11g R2 Performance Tuning Guide (free, but sometimes does not indicate when a cost extra license is required, probably completely ignores Statspack and might be too focused on the OEM):
  http://download.Oracle.com/docs/CD/E11882_01/server.112/e16638/TOC.htm

  Troubleshooting book Oracle Performance (did a very good job of telling this property which requires costs of licenses and the good and bad, what can happen when you implement a suggestion - few initialization parameters is discussed, if I remember, you can read a mini essay I wrote about the book on Amazon's site):
  http://www.Amazon.com/Troubleshooting-Oracle-performance-Christian-Antognini/DP/1590599179

  If you have access to Metalink (MOS), take a look at 390374.1 Doc ID Oracle Performance Diagnostic Guide (there were a few errors in the guide when I checked a year previously, but overall very good reference).

  -------------------------
  Edit:
  I just took another look at the book of Troubleshooting Oracle performance via interface of Google Books - there are several pages that describe the function/impact of various initialization parameters:
  http://books.Google.com/books?id=b3DIkYO2gBQC&PG=PA179#v=onepage&q&f=false
  -------------------------

  Charles Hooper
  Co-author of "Expert Oracle practices: Oracle Database Administration of the Oak Table.
  http://hoopercharles.WordPress.com/
  IT Manager/Oracle DBA
  K & M-making Machine, Inc.

  Published by: Charles Hooper on November 17, 2010 13:39
  Provided the link to Google Books.

• question about performance optimization

  Hi friends,
  
  In our project, according to the changes of condition, a developer has changed its select query.
  This query uses essentially most of the rows in a table
  (consider table_a with col1, col_2, col_3, and col_4 using oracle 10 g DB
  Col_1 is PK).
  
  The query will in a manner similar to this.

  create or replace package pkg_sample is 
     type ref_cur is ref cursor;
     procedure proc_ex(
        p_col_2   table_a.col_2%type,
        p_col_3   table_a.col_3%type,
        p_col_4   table_a.col_4%type,
        o_result   ref_cur);
  end pkg_sample;
  
  create or replace package body pkg_sample is 
     procedure proc_ex(
        p_col_2   table_a.col_2%type,
        p_col_3   table_a.col_3%type,
        p_col_4   table_a.col_4%type,
        o_result   ref_cur) is 
     begin
        open o_result for
           select *
           from   table_a
           where col_2 = p_col_2
           and     nvl(col_3, 'A') = nvl(p_col_3,'A')
           and     nvl(col_4, 'A') = nvl(p_col_4,'A');
     exception 
        when others then 
           raise;
     end proc_ex;
  end pkg_sample;

  Now, I have a question regarding the use of NVL on both sides of the select query.
  
  As our request includes not PK, its doing a table scan on the entire table full.
  
  Now, we can create a function based index... do we need to have indications for each combination? (i.e. when the col_2 is not null and col_3 is null, etc...)
  
  It don't you guys think, we can use NVL on both sides or is it possible to write the select query for maximum performance?
  
  Thank you
  Jack

  instead of NVL, I would use this:

  and   (a.col2 = b.col2
         or (a.col2 is null and b.col2 is null)
        )
  

  This way, you avoid conflicts with the coded hard 'a '.

• Domain-level performance optimization.

  Hi all
  
  In version 10g performance of field level setting can be made in Domain.xml file. In which the level of the field of the performance parameters file can be made for * 11g version *.
  
  Any suggestions?
  
  Thank you
  knockaert

  11 g, there is no concept of several areas.

  You can set the parameters by using EM.

  Login EM. Go to the SOA Infrastructure. The SOA Infrastructure choose Administration-> BPEL/mediator/HWF, set up each of the engine. You can also use the MBean browser.

• Query performance optimization

  HI, I need to know if there is another way to make this request.

  The REVIEWS table have this structure:

  DATE OF EXAM_DATE

  OBJECT VARCHAR2 (50);

  NUMBER OF GRADE;

  The idea is to get statistics of exams.

  Select EXAM_DATE,

  Object

  (SELECT COUNT (1))

  REVIEWS

  where GRADE to THE title (9,10)

  AND THE SUBJECT = EXA. Object

  AND EXAM_DATE = EXA. EXAM_DATE) exceptional.

  (select count (1))

  REVIEWS

  where THE title (4,5,6,7,8) RANK

  AND THE SUBJECT = EXA. Object

  AND EXAM_DATE = EXA. EXAM_DATE) approved,

  (select count (1))

  REVIEWS

  where THE title (0,1,2,3) RANK

  AND THE SUBJECT = EXA. Object

  AND EXAM_DATE = EXA. EXAM_DATE) disapproves of,

  EXA REVIEWS

  EXAM_DATE GROUP, TOPIC;

  Thank you!!

  Hello

  If all the data are in the same table, you shouldn't do any subqueries.

  Maybe something like that

  SELECT exam_date, object

  , COUNT (CASE WHEN rank IN (9, 10) THEN 1 END) pending

  , COUNTY (CASE grade WHEN (4, 5, 6, 7, 8) THEN 1 END) as approved

  , COUNTY (CASE of rank WHEN IN (0, 1, 2, 3) THEN 1 END) DISAPPROVE

  Reviews

  GROUP BY exam_date, object

  ;

  If you would care to post a small example of data (CREATE TABLE and INSERT statements) and the results desired from these sample data, then I could test this.

  See the FAQ Forum:

  Re: 2. How can I ask a question in the forums?

• Performance optimization: what of the fastest?

  Hi all
  
  I doubt that is the fastest among the following code segments,
  
  1 INSERT IN temp_emp
  SELECT * FROM emp;
  
  2. START TO
  RUN IMMEDIATELY "REPORT
  TYPE ty_emp IS TABLE OF THE emp % ROWTYPE;
  v_emp ty_emp;
  BEGIN
  SELECT * COLLECT LOOSE v_emp FROM emp;
  
  FORALL i IN v_emp. FIRST... v_emp. LAST
  INSERT INTO temp_emp VALUES v_emp (i);
  END; »
  END;
  
  3. START TO
  EXECUTE IMMEDIATE "INSERT INTO temp_emp
  SELECT * FROM emp';
  END;
  
  many of my senior colleagues say that the 2nd is faster than the other two. But the feeling that the 1st is faster than others. My prediction is simple, for example, SQL is faster than PL/SQL. Kindly help me in this regard.

  Ofcourse SQL is faster.

  There is no change in context.

• How do I optimize the performance of windows 7 with freeware tool or tool?

  How do I optimize the performance of windows 7 with freeware tool or tool?

  Hello

  As Frederik advised, saving No. tune-up, not so-called Optimizer program, no registry cleaners should be used.

  See if this helps you improve performance.

  Search for malicious software with the FREE version of this program.

  This is the right link to download included.

  And does not accept the option "Pay for the version" trial installation

  Download, install, update and scan your system with the free version of Malwarebytes AntiMalware:

  http://www.Malwarebytes.org/products/malwarebytes_free

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  You can clean your hard drive using these two methods.

  "Delete files using Disk Cleanup"

  http://Windows.Microsoft.com/en-us/Windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=Windows-7

  Using the free CCleaner program:

  http://www.Piriform.com/CCleaner

  In NO case use the registry cleaning Option in CCleaner

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  And it is not recommended to use a register or a program of cleaning/TuneUP/utilities they can do more harm to your any good operating system that they claim to be able to do.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  Make sure you have the latest updated drivers:

  Access the site on your computer or equipment manufacturing > Driver and Software Support Section > search your computer or hardware model number > then your operating system > locate the correct drivers > download and install.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  What are the other steps, which does not include some of the above:

  "Optimize Windows for better performance.

  http://Windows.Microsoft.com/en-us/Windows/optimize-Windows-better-performance#optimize-Windows-better-performance=Windows-7

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  It would be a good idea also run the System File Checker tool to check that everything is correct in the system files.

  "How to use the System File Checker tool to fix the files on system missing or corrupted on Windows Vista or Windows 7"

  http://support.Microsoft.com/kb/929833

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  1. Open an elevated command prompt. To do this, click Start, click principally made programs, Accessories, right-click guest, and then click run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click allow.
  2. Type the following command and press ENTER:
     sfc/scannow

     The sfc/scannow command analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  See you soon.

• Upgrade Windows Vista to Windows 7 will reduce the performance of my PC?

  I look to upgrade my laptops Windows Vista Edition software Home Premium to Windows 7 Home Premium! My laptop can be slow sometimes and I was wondering, the upgrade to Windows 7 will make slower or it will just remain the same?

  Hello

  We cannot advise you as to which is better/more fast/slow more of your particular computer.

  But we suggest you follow these steps before moving on to Windows 7.

  Go to your computer / computer laptop manufacturer Web site and see if Windows 7 drivers are available for your make and model computer / laptop.

  If this is not available, Windows 7 will not properly work for you.

  Run the "Windows 7 Upgrade Advisor.

  http://www.Microsoft.com/en-US/Download/details.aspx?ID=20

  Check if your specifications are compatible for Windows 7:

  "Windows 7 system requirements"

  http://Windows.Microsoft.com/en-us/Windows7/products/system-requirements

  "Windows 7 Compatibility Center" for software and hardware:

  http://www.Microsoft.com/Windows/compatibility/Windows-7/en-us/default.aspx

  Windows 7 upgrade paths:

  http://TechNet.Microsoft.com/en-us/library/dd772579 (v = ws.10) .aspx

  «Installation and reinstallation of Windows 7»

  http://Windows.Microsoft.com/en-us/Windows7/installing-and-reinstalling-Windows-7

  ______________________________________

  And how to improve the performance of Vista:

  See if this helps you:

  Search for malware, if necessary using the safe mode with networking.

  http://www.bleepingcomputer.com/tutorials/how-to-start-Windows-in-safe-mode/#Vista

  Windows Vista

  Using the F8 method:

  1. Restart your computer.
  2. When the computer starts, you will see your computer hardware are listed. When you see this information begins to tap the F8 key repeatedly until you are presented with the Boot Options Advanced Windows Vista.
  3. Select the Safe Mode with networking with the arrow keys.
  4. Then press enter on your keyboard to start mode without failure of Vista.
  5. To start Windows, you'll be a typical logon screen. Connect to your computer and Vista goes into safe mode.
  6. Do whatever tasks you need and when you are done, reboot to return to normal mode.

  Once in Safe Mode with network, download and run RKill.

  RKill does NOT remove the malware; It stops the Malware process that gives you a chance to remove it with your security programs.

  http://www.bleepingcomputer.com/download/rkill/

  Then, download, install, update and scan your system with the free version of Malwarebytes AntiMalware in Mode safe mode with networking:

  http://www.Malwarebytes.org/products/malwarebytes_free

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  You can clean your hard drive using these two methods.

  "Delete files using Disk Cleanup"

  http://Windows.Microsoft.com/en-us/Windows-Vista/delete-files-using-disk-cleanup

  Using the free CCleaner program:

  http://www.Piriform.com/CCleaner

  In NO case use the registry cleaning Option in CCleaner

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  Update drivers:

  Access the site on your computer or equipment manufacturing > Driver and Software Support Section > search your computer or hardware model number > then your operating system > locate the correct drivers > download and install.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  "Optimize Windows for better performance.

  http://Windows.Microsoft.com/en-us/Windows/optimize-Windows-better-performance#optimize-Windows-better-performance=Windows-Vista

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  It would be a good idea to run the System File Checker tool if you have corrupted files

  "How to use the System File Checker tool to fix the files on system missing or corrupted on Windows Vista or Windows 7"

  http://support.Microsoft.com/kb/929833

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  1. Open an elevated command prompt. To do this, click Start, click principally made programs, Accessories, right-click guest, and then click run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click allow.
  2. Type the following command and press ENTER:
     sfc/scannow

     The sfc/scannow command analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  If SFC detects serious flaws, you may need to perform a repair upgrade Installation or relocation complete if you don't have a Vista DVD from Microsoft.

  If you can borrow a DVD of Vista from Microsoft you save doing a reinstall full:

  "How to perform a repair for Vista Installation"

  http://www.Vistax64.com/tutorials/88236-repair-install-Vista.html

  See you soon.

• HP 15 t-ae000 CTO: poor performance of Hp 15 t-ae000 CTO (No Touch)

  My problem is that when I start to play a game and I spend 30 minutes with 60 fps, the game suddenly falls up to 15 images/s quickly and then he stay another 10 seconds it and then up to 60 frames per second. This with most of the games. I have a friend with the same GPU and CPU, and that happens with him.

  My specs:

  • Windows 10 w/birthday update x 64-bit (recently clean reinstalled with Acronis and installed all the drivers of origin)
  • SSD Sasmung 850 Evo 1 TB (100% with Samsung magician performance optimization)
  • NVIDIA Geforce GTX 950 m 4 GB (with the last update)
  • Multithreaded Intel Core i7-5500U 2.4 hearts 2, (99% of the power to disable intel turbo / recent change for an Artic Silver 5 thermal paste)
  • 8gbx2 PC3-12800 DDR3 SDRAM Hynix HMT41GS6BF8A-PB (16 GB) SK

  I though its was cooler, and i but an external cooler and there are still in 64celcius but the problem persists. Please I need help to solve this problem.

  I already fix it. I just put some thermal paste and that's all. Thanks for your help.

• Slow performance after you have reinstalled the computer

  Original title: PC Performence question

  Hi, I reinstalled Windows 7 Home Premium 64 - bit a week ago and for some reason any when I installed this time, it made my PC slow for some reason any. My PC is mainly a PC game and while playing games my FPS is so low that the PC is designed for. My specs of my PC is: Intel Core i5 4670, 8 GB of Ram 1600 Mhz, ASUS B85M-E / CSM Motherboard, EVGA GeForce GTX 960 FTW 4 GB, 128 GB SSD SP600 ADATA, 2 TB Western Digital Caviar Green, Cooler Master eXtreme Power Plus 600W. This question has never happened before, I have owned this PC for 2 years now and never stumbled upon something like that. When I run something like Windows Update my PC returns to the State, it should be, but after its been check updates and my PC is back to having problems. I use a program called "Razer Cortex' for my PC back to what it was before all these problems began to occur. I think some thing in the process systems are realize these questions, but I'm not sure. I would really like to have a fix for this problem to my PC that she had a few weeks back.

  Hello

  Please contact Microsoft Community. I've surely you will help solve this problem.

  This problem might have occurred because of these reasons:

  1 conflict between third-party applications.

  2. for many programs that are configured to start automatically when Windows starts.

  Try the steps listed here:

  Method 1:
  I suggest you to run System Maintenance troubleshooting and check if it helps. Resolution of the problems of System Maintenance are looking for unused files and shortcuts you can clean or remove so that your computer can run faster.
  Open the troubleshooting of System Maintenance Utility
  http://Windows.Microsoft.com/en-in/Windows7/open-the-system-maintenance-Troubleshooter

  Method 2:
  If the problem persists, I suggest to start the computer using safe mode and check if it helps. If so, the value of the computer in a clean boot state and check if it helps.

  Step 1:
  To start the computer in Mode safe following the procedure described in the link. At the start of the computer Mode safe with the minimum set of drivers and files.
  Start your computer in safe mode
  http://Windows.Microsoft.com/en-us/Windows/Start-computer-safe-mode#start-computer-safe-mode=Windows-7

  Step 2:
  We will define the computer in a clean boot, if the issue occur not in Mode without failure. Setting the system in a clean boot state will help you determine if third-party applications or startup items are causing the problem.
  How to perform a clean boot in Windows
  https://support.Microsoft.com/en-us/KB/929135

  Warning: After the clean boot troubleshooting steps, see the "How to reset the computer to start as usual after a clean boot troubleshooting" section in the link provided to return the computer to a Normal startup mode.

  Method 3:
  If the problem persists, I suggest to try the procedure described in the article that willoptimize Windows 7 to speed up performance optimize Windows 7 to speed up performance optimize Windows 7 to speed up performance optimize Windows 7 to speed up performance. Check if it helps.
  Optimize Windows performance
  http://Windows.Microsoft.com/en-us/Windows/optimize-Windows-better-performance#optimize-Windows-better-performance=Windows-7

  Caution:

  1. Disk Cleanup cleans the files associated with your user account. You can also use Disk Cleanup to clean all the files on your computer.
  2. The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

  Hope this information helps. Reply to the post with an up-to-date report of the issue so that we can help you more.

• Slow down the performance of office and viceo on W7 (SP1) computer to office

  Dragging windows on my desk late movement of the cursor. Videos play mode by stop-motion. I tried to install the updates, restart, disk defragmentation, etc, etc... Nothing seems to work. I use Office home and Student 2007 on a 64-bit desktop. Any ideas? Thank you.

  Hello

  See if this helps you improve performance.

  Search for malicious software with the FREE version of this program.

  This is the right link to download included.

  And does not accept the option "Pay for the version" trial installation

  Download, install, update and scan your system with the free version of Malwarebytes AntiMalware:

  http://www.Malwarebytes.org/products/malwarebytes_free

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  You can clean your hard drive using these two methods.

  "Delete files using Disk Cleanup"

  http://Windows.Microsoft.com/en-us/Windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=Windows-7

  Using the free CCleaner program:

  http://www.Piriform.com/CCleaner

  In NO case use the registry cleaning Option in CCleaner

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  And it is not recommended to use a register or a program of cleaning/TuneUP/utilities they can do more harm to your any good operating system that they claim to be able to do.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  Make sure you have the latest updated drivers:

  Access the site on your computer or equipment manufacturing > Driver and Software Support Section > search your computer or hardware model number > then your operating system > locate the correct drivers > download and install.

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  What are the other steps, which does not include some of the above:

  "Optimize Windows for better performance.

  http://Windows.Microsoft.com/en-us/Windows/optimize-Windows-better-performance#optimize-Windows-better-performance=Windows-7

  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

  It would be a good idea also run the System File Checker tool to check that everything is correct in the system files.

  "How to use the System File Checker tool to fix the files on system missing or corrupted on Windows Vista or Windows 7"

  http://support.Microsoft.com/kb/929833

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  1. Open an elevated command prompt. To do this, click Start, click principally made programs, Accessories, right-click guest, and then click run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click allow.
  2. Type the following command and press ENTER:
     sfc/scannow

     The sfc/scannow command analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  See you soon.