Improvement in Performance after rooting
I have an Xperia Arc updated with 4.0.4.
I would like to root my phone and uninstall bloatware as my phone lags currently.
Would rooting and uninstalling apps help improve performance visibly?
Solved!
Go to Solution.
if you must root check this thread
http://talk.sonymobile.com/message/217406
Don't forget to mark the Correct Answers & Helpful Answers
"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)
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Improve PC Performance transcript of Meet the Experts online chat event
On June 1st, HP hosted an online chat event on improving PC performance. Below is a transcriptof that session.
Please note that I have altered the transcript so that follow up questions areincluded in the logical order.
I am in the process of planning the next chatevent. I would love to hear what topics would interest you, what day of theweek and time is best for you, and if you think an hour is too long.
So, if you get a minute, please let me know.
Here's the transcript:
SiobhanF-HP: Welcome!
SiobhanF-HP: If you want to ask a question, you must be a member of the HP Support Forums. If you want to join, go here https://passport2.hp.com/hppcf/createuser.do
SiobhanF-HP: Our team of experts is here and ready to tackle your toughest questions.
SiobhanF-HP: Bryan_N began tinkering with computers in the early 80s with the Atari 400. He has been at HP for almost 10 years and is focused on notebooks and Wireless Wide Area Networks (WWAN.)
SiobhanF-HP: RasterBlaster, aka Randy, also began his fascination with computers 30 years ago when he spent $550 for an Atari 400. He has been addicted to desktop computers ever since and has worked at HP for 16 years.
SiobhanF-HP: Mister Do, aka Kevin, has worked for HP for 11 years. He is a desktop guy and has been ripping PCs apart to see how they work and get better performance out of them for more than 20 years.
SiobhanF-HP: Sanchertx, aka Ralph, is another 20 year PC veteran. He has worked at HP for 15 years and focuses on improving notebook and network performance.
SiobhanF-HP: Huffer, aka Steve, is an attorney by day and a PC enthusiast by night. Although Steve does not work for HP, he is an avid member of the Support Forums. His forte is troubleshooting hardware and software issues, and he uses Linux as a personal operating system instead of Windows.
DexterM: Hello people. I believe that the main reason PC's slow down is because of files leftover after program uninstalls. Many programs leave behind files that store user settings and preferences of the programs even after "complete" uninstallation. Is there any way to completely remove them during uninstallation?
Bryan_N: To DexterM Hi Dexter, Some applications have specific removal tools to fully clean them out, such as the Norton Removal Tool. You can go to symantec.com and search for "Norton Removal Tool". There are also third party applications for cleaning out abandoned registry files, such as CrapCleaner which is what I have used personally. It can be found at ccleaner.com
nseidl33: Can I add more memory to my notebook? If I do, will it void the warranty?
Sanchertx: To nseidl33 hello Nseid133, no you will not void the warranty - you should make sure the specs match up if you buy memory from someone other than HP. That said, you may be required to remove the memory in the event there is a troubleshooting session with HP Support.
aarond22: Does adding more memory really make my PC run faster? If it does, how can I figure out how much memory to add and how hard is it to do?
RasterBlaster: To aarond22 While you use your computer, all software and drivers take up memory. Windows "places" the software and drivers into the hardware memory first because it is fastest. After it runs out of hardware memory it will eventually store the excess data on the hard drive which is much slower. So the amount of memory you have will speed up your computer, but how much speed depends on several factors. Generally, for Vista 64-bit, adding up to 4 GB has the biggest speed gains. Over 4 GB doesn't speed things up all that much unless you do things like video or large graphic editing - software that uses a lot of data. You can find memory upgrade information from the product specification or motherboard specification for your model of desktop PC. This HP support article should answer everything:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph03886&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USE....
animeowns: need a good gaming video card dx10 to play the newer games in hpa1720n
Huffer: To animeowns I am a big fan of the ATI HD 4800 series. It is DX10 compatible and very fast.
HPMAN10: I have a problem with my PC freezing up when I return from sleep mode. This just starting happening recently. Could it have anything to with installing Windows Vista Service Pack 2?
Huffer: To HPMAN10 Have you also added any new hardware? Sleep mode issues are often driver related. Also, some systems need to have their BIOS updated after installing Vista SP2.
HPMAN10: No I have not added new drivers. So you’re saying I should upgrade the BIOS. Isn't that a tricky to do? It could cause more problems.
Huffer: To HPMAN10 Yes, you should be careful with the BIOS upgrades but it should work well from Windows. Close all other programs and be patient with it.
HPMAN10: What about the freeze up in sleep mode? Do I need to update the BIOS for that problem too?
Huffer: To HPMAN10 Yes, there is a good chance it will help, and it cannot hurt to have the latest BIOS. Here is a good link for information: http://technet.microsoft.com/enus/library/dd335032(WS.10).aspx
Here is a good link to locate BIOS Updates for notebooks http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u...
Here is a good link to update the BIOS for desktops http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00007682&cc=us&lc=en&dlc=en HPMAN10: So I should update the BIOS from the HP download page?
Huffer: To HPMAN10 Yes, use the Windows-based BIOS updater. Turn off all other programs.
HPMAN10: If I have a problem with BIOS update can I do a system restore to revert back to original BIOS?
RasterBlaster: To HPMAN10 System Restore will not revert to a previous BIOS. System Restore is only for Windows - BIOS is a separate lower level function.
Huffer: To HPMAN10 BIOS is not part of the operating system, but you can flash back to an earlier version of the OS if needed. I really doubt you will have an issue. HPMAN10: I have a HP s3220n system and my Windows Media Center has a Tuner Not Installed message when I try to use live TV, I have tried everything from HP online support to Microsoft Help and nothing has solved the problem. Any suggestions?
RasterBlaster: To HPMAN10 s3220n comes with a tuner card. The no tuner found error can happen when some other TV capture software "checks out" the tuner. If you have a startup item, like webcam software that is set to hook into the Tuner card, you should go in and change the setting or remove it. Have you read this support document?http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01187871&cc=us&lc=en&dlc=en
HPMAN10: Yes I have read the HP document and tried the suggestions on it without success.
HPMAN10: I do not have a webcam.
HPMAN10: Also my PC Doctor software does not show tuner in the diagnostic program.
Mister_Do: To HPMAN10 If your tuner card is not showing up in PC Doctor, try opening the PC and reseating the tuner. If it still doesn't work, you possibly have a hardware failure.
HPMAN10: Yes I tried hardware and software recovery in HP Help and Tools. Same results NO TUNER INSTALLED.
RasterBlaster: To HPMAN10 Well, unless you did something major ... like upgrade your OS to Vista SP2... or something like that... I'd say your tuner hardware is gone. Especially if you did a system recovery. System recovery takes you back the original configuration
HPMAN10: I have removed the tuner card and reseated it without results in PC Doctor. I'll try it once more.
HPMAN10: Will a BIOS update also help the TV tuner problem?
HPMAN10: By the way I can watch programs I have recorded in the past in Media Center.
RasterBlaster: To HPMAN10 I don't think the BIOS update will help... here is the text from the site: M2N61-AR Motherboard BIOS update resolves issue with the computer shutting down and displaying message "ERROR: Unsupported CPU installed. PC will automatically shut down in a few seconds." Did you reinstall the driver from HP Help and Tools? There should at least be an unknown device in Device Manager. You older files that you are able to view are simply files that were created before you lost your tuner. “No Tuner Found” just means that Media Center cannot find the card because the card is "Check out" of the drivers are out of whack.
HPMAN10: I had tuner problem even before I installed SP2.
RasterBlaster: To HPMAN10 Well, if your tuner died and you could never get it to work after that, it might be a heat related failure. Tuners get hot... but usually, when a tuner gets too hot, you'll get some funny symptoms before it dies... like channel changing takes way too long -- to change up or down - or lots of frame skipping. IF it comes and goes - you have a software conflict problem.
amberdidi: Hi to you all, Why am I constantly receiving the following message and what can I do to correct it. "Windows cannot access the specified device, path or file. You may not have the appropriate permissions" Note: After I click Ok to this message it usually takes me to the page anyhow.
Bryan_N: To amberdidi Hi amberdidi, I'm not sure what OS you have, but this is a helpful document from Microsoft for XP: http://support.microsoft.com/?kbid=308421
amberdidi: About that message "Windows cannot access the specified device...." I am using Vista Home Edition 64 bit SP2.
Bryan_N: To amberdidi Ok, thanks for the clarification. It sounds like it is a security setting in Internet Explorer, try this please: http://support.microsoft.com/kb/959079
animeowns: Did you receive my other message?
Mister_Do: To animeowns Yes, we are working on it.
animeowns: I need a card that will fit in my computer case right now I’m using a 7900 and it’s a tight fit. Here are the specs for my motherboard http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00864946&lc=en&dlc=en&cc=us&os=2093&product=334...
animeowns: It must be about 7.8 x 3 x 4.4 inches – that’s the size of my 7900 gs, and it’s a tight fit. My motherboard is Micro-ATX: 9.6 in X 9.6 in. Please help. I want to upgrade to a nice card that will be able to play games like crysis fear 2 unreal tournament 3.
RasterBlaster: To animeowns Yeah, finding low-profile cards can be tricky. It sounds like you have the measurement. Searching the internet shopping sites for low-profile graphics cards should bring up some cards - then find one you like and work with the site to make sure it fits your measurement. HP can supply a replacement - but if it is not on HP shopping's site - you can go with other shopping sites.
animeowns: Will this video card fit in my system? http://www.newegg.com/Product/Product.aspx?Item=N82E16814127414
Mister_Do: To animeowns Sorry, I haven't tried that one personally, so I'm not sure. You'll need to make sure your current card dimensions match the new card.animeowns: Can someone please help me find a direct x 10 gaming card that will fit in my hp a1720n? The size has to be 7.8 x 3 x 4.4 inches or smaller that is the size of my pny 7900 gs and its a tight fit because the memory is real close.
RasterBlaster: To animeowns Huffer had to step out. The folks trying to help you in this chat session are from HP. We can't recommend a video card upgrade that did not already come with your PC - sorry You should post this same question into the forums under desktop PC and hardware (or video) category.
whitey: I have a ZD-7015us laptop and would like to know if the processor can be upgraded.
Huffer: To whitey I wouldn’t really recommended it because it is hard to know if it will overheat, but a Pentium 4 desktop processor will fit.
SiobhanF-HP: If you have specific product questions, the more information you give us the better we will be able to help you. Getting your exact model number; any error messages; what operating system version are you running; any recent hardware or software changes will go a long way to helping us answer your question.
amberdidi: I would like to know if NOD 32 antivirus is compatible with my Vista 64 bit. I am using Avast at the moment, but I am really interested in NOD32 or a good quality antivirus you can recommend for 64 bit. Thank you.
Huffer: To amberdidi I use Avast or AVG on Vista 64 bit systems and either works well. I have only used NOD32 on 32 bit systems. The NOD32 website will answer this question definitively.
amberdidi: Back to the freezing problem with my Vista 64 bit. I downloaded only the final version of SP2 but I have updated most of my drivers including the latest NVIDIA driver from their site. Should I also update my BIOS?
Sanchertx: To amberdidi Yes, update the BIOS.
DexterM: Other than unchecking Startup Programs from MS Configuration Utility, is there any other way to speed up startup time of a Windows PC?
RasterBlaster: To DexterM There are lots of methods. If you have Vista - go in and shut down aero, if you don't need it, make sure your temp files are cleared, etc... Here is a support document:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00815926&cc=us&lc=en&dlc=en
XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06569&cc=us&lc=en&dlc=en
Blondechica: I just bought a HP HDX16 and I am embarrassed to say I do not how to find the On button. I am using my friend’s computer and told him that I had a different problem with my computer and gave this site. Also, when I do get it turned on will it be blank. Do have to buy software? I hope this is not the first time someone has asked this question. This is all new to me. Thank you for your help.
Sanchertx: To Blondechica Hello, please hit the power button on the top left of the keyboard cover. This will illuminate to a blue color to show the unit is on. You must let the unit create the image. This means you will let it run on its own until you see the Welcome screen. The unit comes with the Vista operating system and has HP applications. It also comes with trial versions of Norton antivirus and MS Office.
Petedog11: I have the HP Pavilion a6745f Desktop PC and would like to upgrade my graphics card. I like to run high-end flight simulators. What graphics card do you recommend? Will I need to upgrade my power supply unit also? Is there a way to disable the on board graphics card that came with the computer once I install a new graphics card? Thank you.
Huffer: To Petedog11 A new power supply should not be needed. When you plug in a new video card it will automatically disable the onboard. Just be sure you have a pci-e poer connector (6 pin)
Petedog11: The power supply unit that is in my HP Pavilion a6745f Desktop PC is 300 watts I believe. My understanding is that the newer Radeon's etc...need more power. Will you please answer the remainder of my original question.....I like to run high-end flight simulators. What graphics card do you recommend? Thanks!
Huffer: To Petedog11 300 watts is a bit light. I would look for around a 500 watt psu.
mlk3742: I have a dv9000 laptop, it has 4 gigs of ram. I run Photoshop CS4. Is there any way to increase processing speed?
Sanchertx: To mlk3742 While there isn’t a switch you can turn on to make the processor run faster, you can do things like remove un-needed software and remove items from startup. Also disabling HP Advisor helps. Here is a good reference -
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00816938&lc=en&dlc=en&cc=us&lang=en&rule=13847&...
amberdidi: Since I downloaded SP2 on my Vista Home Edition I also am freezing up every so often to the point that I have to use Task Manager to end it and start over again. I have an HP Elite with 1000GB hard drive and 8192MB memory. What can I do? Thank you.
Bryan_N: To amberdidi If you downloaded the beta version of SP2 you might want to uninstall it and download the final version. If you downloaded the final version and this started with SP2, you can check the Problem Reports and Solutions feature of Vista. Just click the Start button, and type: Problem Reports, then click on the application
scribblesteve: Besides the usual cleaning up Temp files and using Disk Clean up or Defrag, how can I prevent my computer from running sluggishly? I want it to run as fast and as smooth as it did the first time I turned it on?
Mister_Do: To scribblesteve Removing startup items or keeping programs from running in the background helps a lot. And depending on what operating system you have there are multiple settings you can change to improve performance. Here are two HP support documents that list multiple ways to improve your PC performance: For XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06569&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USE...
For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00815926&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
bjm: I have a Compaq Presario A931NR Notebook BIOS F.32 Software Driver download site displays F.34 I don't know if I should Update to F.34 because F.32 is not listed as a previous version, and I don't know if I can go from F.32 to F,34 without F.33
Huffer: To bjm No problem. You can easily skip a level of BIOS update and go right to 3.4.
bjm: Need to know if I should update my BIOS
Huffer: To bjm The update will work, but I really need to know what your problem is to assess whether the BIOS update is necessary.
bjm: HP Updates report no available Updates so how do I know if I need Update other than what is presented on Software Driver download page
Mister_Do: To bjm If HP Update says you don't have any new updates, then your PC is up to date with the latest drivers. If you by chance see a software or driver file on you product support page, and it's newer than what you have. You can install it, but if your PC is running fine, you may not want to bother.
bjm: Huffer asked why is BIOS update necessary. I would ask why does Software Update site show an Update if it's not necessary? HP Update is not working to report BIOS updates. 13 months and no Updates ever. So, all I have to go by is Software Update site which report newer BIOS with Enhancements to Security. Why would Total Care Advisor, HP Health Check and HP Update not have even one Update or info after 13 months of service?
RasterBlaster: To bjm The software BIOS update page on hp.com/customercare should tell you what the BIOS update fixes or improves. If your system is running well or the BIOS update page does not list a fix for your problem - don't update the BIOS. That's my opinion anyway. BIOS updates do introduce a level of risk. For example if you have a power outage while updating the BIOS, the PC will require service. So ... if in doubt, don't do it unless you know it resolves an issue.
bjm: The BIOS Update to F.34 is stated as having Security Enhancements. Does the System Info refresh with a BIOS update or is System Info static
Mister_Do: To bjm Where are you viewing the System Info? From the BIOS itself, from "Properties" under "Computer", etc.? Here’s good document on Locating HP Software, Driver and BIOS Updates:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u...
puter_student: I sent my hp Mini 1000 (Win XP) into service about two weeks ago. I gave a lady friend a 1120NR (Mi on Linux) yesterday. As she is a geographic distance, and using a different OS, how would you suggest I assist her by telephone. And, once she establishes solid Internet access, is it best to send her e-mail or instant messages?
Bryan_N: To puter_student Hi Puter_student, you have several choices since HPMI supports MSN messenger and other chat programs via the "pidgeon" application, and it also comes preinstalled with Skype. You can install either of those on your XP unit. Skype also allows you to use a webcam at the same time.
puter_student: Sorry, I stated my question badly. I did not mean to ask about the communications technology. I meant the information resources available online -- to both her and me -- WRT setup, configuration (if needed), etc. The realization came to me earlier today that I cannot "walk" her thru it by simply telling her what I see on my own machine as I take certain actions [other, of course, than accessing appropriate documents about her model]. Can you point me in the right direction to those resource documents?
Bryan_N: To puter_student For support documents you can start here:
http://h10025.www1.hp.com/ewfrf/wc/product?product=3860346&lc=en&cc=us&dlc=en&lang=en&cc=us
puter_student: I clicked the link you supplied. Doing so took me out of this chat, but did not get me where you were trying to send me. Now, when I return to the chat, I no longer have the earlier session history. When will it be posted, and where can I find the whole chat session later?
Bryan_N: To puter_student The transcript will be posted on the boards within 48 hours after this event. I got to the link by going to hp.com, and searching for support on "mini 1110nr" http://h10025.www1.hp.com/ewfrf/wc/product?product=3860346&lc=en&cc=us&dlc=en&lang=en&cc=us
The MI desktop is based on Ubuntu, and you can also find lots of general Ubuntu information on external forums Certain applications have support externally as well, such as the Firefox browser.
mlk3742: to Sanchertx: Can I swap out or replace the graphics card to speed up graphic intensive demands such as Photoshop?
Sanchertx: To mlk3742 Hello - not with our notebooks. They are either attached to system board or a daughter board, which is then attached to the system board.mlk3742: to Sanchertx: So there is no way from a hardware approach to increase speed? The only time I notice my lap slows down is processing large files, i.e. photos, or while performing image edits in Photoshop. After increasing RAM, everything else has speeded up noticeably. My laptop has more than half the hard drive space free.
Sanchertx: To mlk3742 Hardware wise you can get a faster hard drive - example move from a 5400 rpm to 7200 RPM - Also make sure you have the latest BIOS update. These usually have maintenance modifications to resolve potential problems and tweak the hardware.mlk3742: to Sanchertx: How and or where do I get a BIOS upgrade? Do you have a recommendation for which hard drive to get? Will any aftermarket drive fit in my laptop?
Sanchertx: To mlk3742 Hello – this document Locating HP Software, Driver and BIOS Updates should help http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u... I cannot recommend a 3rd party - aftermarket drive - but there are many available. A good place to look is notebookforum.com.
scribblesteve: My battery is fine, but the HP Battery check doesn't recognize it. I have the most updated versions of BIOS, Help and Support and sp41862, and it still doesn't recognize it. I'm running Vista32bit on an HP pavilion dv6704nr. What else can I try to check and prolong the life of my battery?
Bryan_N: To scribblesteve Hi scribblesteve, ensure the battery is charged and the AC adaptor is plugged in when testing. If that doesn't work, you can do some basic battery life steps. These are found at http://h20239.www2.hp.com/techcenter/battery/Battery_max.htm and also at http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00821429&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
DexterM: What tweaks do you guys usually do on your Windows PC's to ensure optimal PC performance?
Bryan_N: To DexterM Hi DexterM, I uninstall any applications I don't use, run Microsoft and HP updates, keep a good antivirus installed, and also I personally use a third party application called ccleaner. I back up my unit in full every month as well just in case.
amdkenworth: Hi I have an HP that has a on board video card and it won’t show any video when its turned on???
RasterBlaster: To amdkenworth First thing you should do is try connecting another monitor to see if it is related to the monitor or the video on the motherboard. Here is document that you should check out: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph04760&lc=en&dlc=en&cc=us&lang=en&rule=3950&pr...
jest1: My notebook has a short battery life. Is there something I can do?
Sanchertx: To jest1 A: There are several things you can do to extend battery life such as changing your power plan, calibrating your battery to increase capacity, or shutting off unused features in the OS. Here is an excellent document on notebook battery usage that will walk you through your options step by step http://tinyurl.com/57x38x
Dominick_7: Hi I have an HDX 9000t and was wondering if anyone knew if/how I could upgrade the graphics card, to say an MXM GPU?
Bryan_N: To Dominick_7 Hi Dominick_7, there isn't a way to upgrade the video card itself. You can ensure you have the latest drivers by visiting hp.com and checking drivers, and keep your overall system optimized with standard PC Tune up steps such as this document: c00034290 - HP Notebook PCs - Improving the Performance of Your Notebook PC
Dominick_7: From what I understand, an HP tech told me MXM has on board BIOS which doesn’t depend on the BIOS from the motherboard. What leads you to say it can’t be done?
Bryan_N: To Dominick_7 The video card is separate, but not replaceable as it is directly attached to the system board
Dominick_7: Can't the same be said about the processor? Yet I know people who have updated their processors, and GPUs when they upgrade them from an ATI to the 8800M GTS NVIDIA GPU? If you could please elaborate in a more detailed fashion as to what the obstacles are I'd appreciate it. Is that the ONLY reason why you say it can't be done? Because it’s directly connected to the motherboard? If that was insurmountable wouldn't that make it impossible to upgrade the ATI GPU in lower specd HDXs to the 8800 NVI...
Bryan_N: To Dominick_7 The CPU is not soldered onto the system board, so it is replaceable. The GPU/Graphics card is soldered onto the system board and is not replaceable.
SSPatrick: HP Total Care Advisor is giving me warnings - How do I clear these up?
Sanchertx: To SSPatrick Click on the PC Update button inside of Advisor to check for and run updates. After you run all the necessary updates, you should click on Health Check to scan your computer to remove the warnings. Here is a good document on the ins and outs of Total Care Advisor. http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01599730&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
Petedog11: I have the HP Pavilion a6745f Desktop PC. Media Center came pre-installed with the computer. Do I have a Tuner card installed?
Mister_Do: To Petedog11 Hi Petedog11, It doesn't look like you have a TV Tuner installed. Here is your product spec for reference: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01625611&cc=us&lc=en&dlc=en&product=3870515
laurensw: I installed antivirus software and now my PC is running really slow - what should I do?
Bryan_N: To laurensw Hi Laurensw, It often helps to ensure the original antivirus software was fully removed. One possible solution is to use the Norton Removal Tool to completely remove the trial version of Norton that shipped with your PC.
rdewing: My PC is about a year old and it is getting slower and slower. Do I have a virus? Is there something that I can do to make run faster?
Mister_Do: To rdewing It is tough to say why your PC is running slowly, but there are some things you can do that may help its performance. Check out this web site for step by step instructions on basic PC care. http://h20239.www2.hp.com/techcenter/pctuneup/ HP also offers free online classes to teach you how to tune up your XP or Vista PC. Check it out http://tinyurl.com/lj86yt
scribblesteve: I'm having a graphics problem where I cannot see images. I have only seen it with the HP Help and Support and the Installation of Adobe Web Premium Installation. I have no Idea how to fix this, and neither does anyone in the multiple Support Forums I've posted the problem in. Here are some screenshots: http://www.stevedolan.com/shared/graphicsproblem.jpg | http://www.stevedolan.com/shared/graphicsproblem2.jpg
Bryan_N: To scribblesteve This one looks like something I cannot answer before the event terminates. Can you start a thread on this on the customer forums here and we can continue? If you already have, can you send me the link and I can subscribe to it?
scribblesteve: Bryan_N: Here is that link: http://h30434.www3.hp.com/psg/board/message?board.id=Display&message.id=1715#M1715
Bryan_N: To scribblesteve Thanks scribblesteve
SiobhanF-HP: We are nearing the end of our chat session. We only have time for 3 more questions. If we did not get to your question, please post it on the Notebook and Desktop boards.
jest1: It takes my PC a pretty long time to boot. Any recommendations?
Mister_Do: To jest1 The first two things I would consider doing would be to 1) add more memory to your PC (unless you already have max memory), and 2) I would change my Startup program and process settings. Here are a few HP Support documents that explain how to prevent unnecessary programs from running at startup: For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00813419 For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00819747&cc=us&lc=en&dlc=en For XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph07149&cc=us&lc=en&dlc=en
SiobhanF-HP: We only have time for one more question. If we did not get to your question, please post it on the Notebook or Desktop boards.
jest1: I think I have a notebook battery that was part of a recent recall, what do I do about this?
Mister_Do: To jest1 Visit the HP Notebook PC Battery Pack Replacement Program Web site at: http://www.hp.com/support/BatteryReplacement for additional information and to determine if your battery is part of the program.
jest1: How can I find out the maximum amount of memory my system can accept?
Mister_Do: To jest1 HP has product specifications for your PC on its web site. Go to www.HP.com and click on Software Driver and enter your exact PC model name. You must give the specific model number, ex dv9009nr, and not the series number, ex dv9000. Click on the document that references Product Specifications at the top of the list of articles. You will get a detailed breakdown of your system including microprocessor, graphics card, and the maximum amount of memory you can load onto your PC.
SiobhanF-HP: We are ending the chat event. Thank you for coming. We hope you found it worthwhile. I will be posting a transcript of the event in announcement section at the top of the Notebook and Desktop boards. Please feel free to continue these conversations on the Forums.
SiobhanF-HP: We will be hosting future Meet the Experts chat sessions on a variety of topics, so please tell us what you thought of the event and how it could be improved.
Message Edited by timhsu on 06-02-2009 05:28 PM
I work for HP, supporting the HP Experts who volunteer their time and technical knowledge to help others.hello sir,
i want to your help
i was installed fresh windows 7 via cd rom and then after installed all software.
and now after 1 day customer complained me that cd rom not read any cd and i m also check when i insurt cd so its not read and when i am double click on cd rom icon its eject so what i do for that please reply on my email address.
[text removed for privacy]
VIMAL -
How to improve the performance of serialization/deserialization?
Hi, Friends,
I have a question about how to improve the performance of serialization/deserialization.
When an object is serialized, the entire tree of objects rooted at the object is also serialized. When it is deserialized, the tree is reconstructed. For example, suppose a serializable Father object contains (a serializable field of) an array of Child objects. When a Father object is serialized, so is the array of Child objects.
For the sake of performance consideration, when I need to deserialize a Father object, I don't want to deserialize any Child object. However, I should be able to know that Father object has children. I should also be able to deserialize any child of that Father object when necessary.
Could you tell me how to achieve the above idea?
Thanks.
YoubinYou could try something like this...
import java.io.*;
import java.util.*;
class Child implements Serializable {
int id;
Child(int _id) { id=_id; }
public String toString() { return String.valueOf(id); }
class Father implements Serializable
Child[] children = new Child[10];
public Father() {
Arrays.fill(children, new Child(1001));
public void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException
int numchildren = stream.readInt();
for(int i=0; i<numchildren; i++)
children[i] = (Child)stream.readObject();
stream.close();
public void writeObject(ObjectOutputStream stream) throws IOException
stream.writeInt(children.length);
for(int i=0; i<children.length; i++)
stream.writeObject(children);
stream.close();
Child[] getChildren() { return children; }
class FatherProxy
int numchildren;
String filename;
public FatherProxy(String _filename) throws IOException
filename = _filename;
ObjectInputStream ois =
new ObjectInputStream(new FileInputStream(filename));
numchildren = ois.readInt();
ois.close();
int getNumChildren() { return numchildren; }
Child[] getChildren() throws IOException, ClassNotFoundException
ObjectInputStream ois =
new ObjectInputStream(new FileInputStream(filename));
Father f = (Father)ois.readObject();
ois.close();
return f.getChildren();
public class fatherref
public static void main(String[] args) throws Exception
// create the serialized file
Father f = new Father();
ObjectOutputStream oos =
new ObjectOutputStream(new FileOutputStream("father.ser"));
oos.writeObject(f);
oos.close();
// read in just what is needed -- numchildren
FatherProxy fp = new FatherProxy("father.ser");
System.out.println("numchildren: " + fp.getNumChildren());
// do some processing
// you need the rest -- children
Child[] c = fp.getChildren();
System.out.println("children:");
for(int i=0; i<c.length; i++)
System.out.println("i " + i + ": " + c[i]); -
How to improve the performance of the query
Hi,
Help me by giving tips how to improve the performance of the query. Can I post the query?
SureshBelow is the formatted query and no wonder it is taking lot of time. Will give you a list of issues soon after analyzing more. Till then understand the pitfalls yourself from this formatted query.
SELECT rt.awb_number,
ar.activity_id as task_id,
t.assignee_org_unit_id,
t.task_type_code,
ar.request_id
FROM activity_task ar,
request_task rt,
task t
WHERE ar.activity_id =t.task_id
AND ar.request_id = rt.request_id
AND ar.complete_status != 'act.stat.closed'
AND t.assignee_org_unit_id in (SELECT org_unit_id
FROM org_unit
WHERE org_unit_id in (SELECT oo.org_unit_id
FROM org_unit oo
WHERE oo.org_unit_id='3'
OR oo.parent_id ='3'
OR parent_id in (SELECT oo.org_unit_id
FROM org_unit oo
WHERE oo.org_unit_id='3'
OR oo.parent_id ='3'
AND has_queue=1
AND ar.parent_task_id not in (SELECT tt.task_id
FROM task tt
WHERE tt.assignee_org_unit_id in (SELECT org_unit_id
FROM org_unit
WHERE org_unit_id in (SELECT oo.org_unit_id
FROM org_unit oo
WHERE oo.org_unit_id='3'
OR oo.parent_id ='3'
OR parent_id in (SELECT oo.org_unit_id
FROM org_unit oo
WHERE oo.org_unit_id='3'
OR oo.parent_id ='3'
AND has_queue=1
AND rt.awb_number is not null
ORDER BY rt.awb_numberCheers
Sarma. -
How to improve the performance in Xcelsius
Hi ,
I have nearly 5000 records in excel and when I try to import this data in to xcelsius its taking nearly 3 hrs to get imported and after that when I try ti select the sorce data again its taking more than 3 hrs .I think this is happening because I have increased max. no. of rows to 5000 but is there any way to improve the performance
Regards,
Sanyhi sany
5000 records is much to much. Xcelsius is designed for highly aggregated small data sets.
Although 5000 records may work, think about that the default maxrows value is about 512. I think this is a kind of sign.
Try to reduce you data set or dynamically refresh the data you really need at runtime.
Best regards
Ulrich
http://www.xcelsius-insight.com -
How to improve the performance in AM level
Hi,
I am using Jdeveloper 11.1.1.2.0 and weblogic server 10.3.2.
How to improve the performance in AM level.
Actually i have approx 10 lacs Data but when search the record then it is taking more time.
I have following the link..
http://www.gebs.ro/blog/oracle/adf-view-object-performance-tuning-analysis/
but there is no effect in the performance level for seaching.
So please help me ..
Thanks
AnupHi Timo,
In search page,i m giving empId and click on search button then to execute query it is taking more time.I have override the VOImpl executeQuery(). then it is taking more time
@Override
public void executeQuery() {
setNamedWhereClauseParam("bind_draft", "D");
setNamedWhereClauseParam("bind_complete","%");
setNamedWhereClauseParam("bind_reject","%");
setNamedWhereClauseParam("bind_approve","A");
setNamedWhereClauseParam("bind_review","R");
super.executeQuery();
this method super.executeQuery() is calling and after 5 minutes heap space is comming on cosole as well as page also.
Thanks
Anup -
How to improve query performance using infoset
I create one infoset that including 4 char.and 3 DSO which all are time-dependent.When query run, system show very poor perfomance, sometimes no data show in BEX anayzer. In this case I have to close BEX analyzer at first and then open it again, after that it show real results. It seems very strange. Does anybody has experience on infoset performance improvement. pls info, thanks!
Hi
As info set itself doesn't have any data so it improves Performance
also go through the below tips.
Find the query Run-time
where to find the query Run-time ?
557870 'FAQ BW Query Performance'
130696 - Performance trace in BW
This info may be helpful.
General tips
Using aggregates and compression.
Using less and complex cell definitions if possible.
1. Avoid using too many nav. attr
2. Avoid RKF and CKF
3. Many chars in row.
By using T-codes ST03 or ST03N
Go to transaction ST03 > switch to expert mode > from left side menu > and there in system load history and distribution for a particular day > check query execution time.
Statistical Records Part 4: How to read ST03N datasets from DB in NW2004
How to read ST03N datasets from DB
Try table rsddstats to get the statistics
Using cache memory will decrease the loading time of the report.
Run reporting agent at night and sending results to email. This will ensure use of OLAP cache. So later report execution will retrieve the result faster from the OLAP cache.
Also try
1. Use different parameters in ST03 to see the two important parameters aggregation ratio and records transferred to F/E to DB selected.
2. Use the program SAP_INFOCUBE_DESIGNS (Performance of BW infocubes) to see the aggregation ratio for the cube. If the cube does not appear in the list of this report, try to run RSRV checks on the cube and aggregates.
Go to SE38 > Run the program SAP_INFOCUBE_DESIGNS
It will shown dimension Vs Fact tables Size in percent.If you mean speed of queries on a cube as performance metric of cube,measure query runtime.
3. To check the performance of the aggregates,see the columns valuation and usage in aggregates.
Open the Aggregates...and observe VALUATION and USAGE columns.
"---" sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
In valuation column,if there are more positive sign it means that the aggregate performance is good and it is useful to have this aggregate.But if it has more negative sign it means we need not better use that aggregate.
In usage column,we will come to know how far the aggregate has been used in query.
Thus we can check the performance of the aggregate.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
performance ISSUE related to AGGREGATE
Note 356732 - Performance Tuning for Queries with Aggregates
Note 166433 - Options for finding aggregates (find optimal aggregates for an InfoCube)
4. Run your query in RSRT and run the query in the debug mode. Select "Display Aggregates Found" and "Do not use cache" in the debug mode. This will tell you if it hit any aggregates while running. If it does not show any aggregates, you might want to redesign your aggregates for the query.
Also your query performance can depend upon criteria and since you have given selection only on one infoprovider...just check if you are selecting huge amount of data in the report
Check for the query read mode in RSRT.(whether its A,X or H)..advisable read mode is X.
5. In BI 7 statistics need to be activated for ST03 and BI admin cockpit to work.
By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
/people/vikash.agrawal/blog/2006/04/17/query-performance-150-is-aggregates-the-way-out-for-me
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
You can go to T-Code DB20 which gives you all the performance related information like
Partitions
Databases
Schemas
Buffer Pools
Tablespaces etc
use tool RSDDK_CHECK_AGGREGATE in se38 to check for the corrupt aggregates
If aggregates contain incorrect data, you must regenerate them.
202469 - Using aggregate check tool
Note 646402 - Programs for checking aggregates (as of BW 3.0B SP15)
You can find out whether an aggregate is usefull or useless you can find out through a proccess of checking the tables RSDDSTATAGGRDEF*
Run the query in RSRT with statistics execute and come back you will get STATUID... copy this and check in the table...
This gives you exactly which infoobjects it's hitting, if any one of the object is missing it's useless aggregate.
6
Check SE11 > table RSDDAGGRDIR . You can find the last callup in the table.
Generate Report in RSRT
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4c0ab590-0201-0010-bd9a-8332d8b4f09c
Business Intelligence Journal Improving Query Performance in Data Warehouses
http://www.tdwi.org/Publications/BIJournal/display.aspx?ID=7891
Achieving BI Query Performance Building Business Intelligence
http://www.dmreview.com/issues/20051001/1038109-1.html
Assign points if useful
Cheers
SM -
Is there a way to improve the performance of a report group?
Hi gurus,
Is there a way to improve the performance of a report group?
Points will be given later....
Thanks!Hi there,
Thank you for your response. I thought there's no answer for this issue and planning to change it to ALV.
I looked at the codes and debugged it. After the select statement from ZZUWT table (customized), there's a loop that takes much time (10-12mins) for 1000 records. and several nested perform routines. It's a standard program so I'm hesitant to edit it.
I'll be checking on the primary keys. If it's ok, may I ask for your assistance in this part? Though I'm not that familiar and haven't tried creating a report painter before.
Thanks anyway...:D -
Improve Portal performance with BI-Java by adding additional server node.
Hi SAP Expert
I wonder anyone might have attempted this before,
In an environment with BI-Java and Portal Java stack installed on the same server, is it possible to improve the system performance by adding additional portal server node? or is there any improvement seen by adding the extra server node?
I am after suggestion and experience on how the portal performance can be improve, with consideration of BI-Java sharing Portal resources.
Any comment will be most appreciated.Hi Jim,
We've this configuration at our site, Portal and BI running together (not federated). Recommendations would be to:
1. Set a sensibly large max heap size on each server node of Portal (at least 2GB if not larger) and implement several nodes at least. For example we have 4 x physical nodes, each running 3 server nodes of 2GB max heap size apiece so a total of 12 nodes.
2. Implement the BI Safety Belt for large results sets (1127156)
3. Implement the latest JVM / JDK you can on your environment. We found much improved performance after implementing JDK SR10 with the J9/2.3 options enabled e.g., -Xjvm:j9vm23
-Xsoftrefthreshold0
4. Patch your BI components on the Portal (BIBASES, BIWEBAPP etc) to the latest available patch level for your Portal SP level
5. Make sure all your RFC connections are load balanced to the backend and tuned for the kind of load you expect on your reports, and the BI is sized appropriately in terms of app servers and dialog work processes, RFC-enabled login groups in SMLG etc.
6. Consult notes 1048691 (especially useful, opions &PROFILING=X&TRACE=X added to reports for example for performance tracing), 937697, 1021921, 948158 for information about problem analysis for this scenario
7. Implement SAP Web Dispatcher for Portal to reduce load on static mime files
8. Tune the Portal application. There's plenty information on SDN related to Portal performance tuning.
I hope this helps!
Cheers,
Marc -
Improve the Performance of Loops
Has anyone read "Improve the Performance of Loops" on http://archive.devx.com/free/tips/tipview.asp?content_id=3945 ?
If so, would you agree that what's written there is absolute b.....t?
He claims that decreasing the counter improves the performance and tries to prove it with the program:
for (int i=0,n=Integer.MAX_VALUE;i<n;i++){
a =-a;
// is slower than
long midTime =System.currentTimeMillis();
for (int i=Integer.MAX_VALUE-1 ; i>=0 ; i--){
a =-a;
}The result is pretty impressive:
Increasing Loop:4891
Decreasing Loop:3781
The only stupid thing is that:
1. if you run it more times you get
Increasing Loop:4891
Decreasing Loop:3781
Increasing Loop:3782
Decreasing Loop:3796
Increasing Loop:3891
Decreasing Loop:3891
Increasing Loop:3828
Decreasing Loop:3937
Increasing Loop:3891
Decreasing Loop:3906
Increasing Loop:3860
Decreasing Loop:3937
Increasing Loop:3891
Decreasing Loop:3906
So you can see that the performance is worse for decreasing loops after hotspot warmed up.
2. If you run it with -server, you'll even get:
Increasing Loop:16
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
This shows that hotspot sever is much more clever than some programmers.
Even if you change the code to do something bit better like
public TimeLoop() {
int a = 2,b=2;
long startTime = System.currentTimeMillis();
for (int i = 0, n = Integer.MAX_VALUE; i < n; i++) {
a ^= i;
long midTime = System.currentTimeMillis();
for (int i = Integer.MAX_VALUE - 1; i >= 0; i--) {
a ^= i;
long endTime = System.currentTimeMillis();
System.out.println("Increasing Loop:" + (midTime - startTime));
System.out.println("Decreasing Loop:" + (endTime - midTime));
System.out.println("a="+a+" b="+b); // Hotspot must perform _some_ kind of calculation to print this
}You'll find that it doesn't really matter whether you're xoring in increasing or decreasing order.
For -client:
Increasing Loop:296
Decreasing Loop:297
a=2 b=2
Increasing Loop:297
Decreasing Loop:281
a=2 b=2
Increasing Loop:297
Decreasing Loop:297
a=2 b=2
For -server:
Increasing Loop:141
Decreasing Loop:156
a=2 b=2
Increasing Loop:141
Decreasing Loop:141
a=2 b=2
Increasing Loop:140
Decreasing Loop:156
a=2 b=2
(Last three runs for each).
And I don't believe that accessing array.length is slower than storing the length in an int and comparing against that int!
Please let's just stop posting silly perfomance tuning tips!Well, you can always look at the bytecode produced. I wrote two little classes:public class t {
public static void main ( String[] args ) {
int a = 0;
for (int i=0,n=Integer.MAX_VALUE;i<n;i++){ a =-a; }
}andpublic class t1 {
public static void main ( String[] args ) {
int a = 0;
for (int i=Integer.MAX_VALUE-1 ; i>=0 ; i--){ a =-a; }
}And here's the bytecode for their main() methods. (Extra/different bytecodes in "t" are marked):t: (incrementing)Method void main(java.lang.String[])
0 iconst_0
1 istore_1
==>2 iconst_0
3 istore_2
4 ldc #2 <Integer 2147483647>
6 istore_3
7 goto 16
10 iload_1
11 ineg
12 istore_1
13 iinc 2 1
16 iload_2
==>17 iload_3
==>18 if_icmplt 10
21 return
t1: (decrementing)
Method void main(java.lang.String[])
0 iconst_0
1 istore_1
2 ldc #2 <Integer 2147483646>
4 istore_2
5 goto 14
8 iload_1
9 ineg
10 istore_1
11 iinc 2 -1
14 iload_2
15 ifge 8
18 return The decrementing code does use fewer bytecodes to do its thing.
However, as someone pointed out - once Hotspot gets involved, all bets are off. And as someone else pointed out, if the body of the loop does nearly anything at all, the 2-bytecode-difference is going to get completely swamped.
In general, this is the kind of micro-optimizing that I'd ignore completely...
Grant -
How can I Improve the Performance using Global Temo Tables ??
Hi,
Can anyone tell me , How can i make use of Global Temporary Tables to improve the Performance.
I have few sample scripts ,
Say i have the View based on some Complex query like ,
CREATE OR REPLACE VIEW Profile_values_view AS
SELECT d.Profile_option_name, d.Profile_option_id, Profile_option_value,
u.User_name, Level_id, Level_code
FROM Profile_definitions d, Profile_values v, Profile_users u
WHERE d.Profile_option_id = v.Profile_option_id
AND ((Level_code = 'USER' AND Level_id = U.User_id) OR
(Level_code = 'DEPARTMENT' AND Level_id = U.Department_id) OR
(Level_code = 'SITE'))
AND NOT EXISTS (SELECT 1 FROM PROFILE_VALUES P
WHERE P.PROFILE_OPTION_ID = V.PROFILE_OPTION_ID
AND ((Level_code = 'USER' AND
level_id = u.User_id) OR
(Level_code = 'DEPARTMENT' AND
level_id = u.Department_id) OR
(Level_code = 'SITE'))
AND INSTR('USERDEPARTMENTSITE', v.Level_code) >
INSTR('USERDEPARTMENTSITE', p.Level_code));
Now i have created the Global temp Table as ,
CREATE GLOBAL TEMPORARY TABLE Profile_values_temp
Profile_option_name VARCHAR(60) NOT NULL,
Profile_option_id NUMBER(4) NOT NULL,
Profile_option_value VARCHAR2(20) NOT NULL,
Level_code VARCHAR2(10) ,
Level_id NUMBER(4) ,
CONSTRAINT Profile_values_temp_pk
PRIMARY KEY (Profile_option_id)
) ON COMMIT PRESERVE ROWS ORGANIZATION INDEX;
Now I am Inserting the Records into Temp table as
INSERT INTO Profile_values_temp
(Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id)
SELECT Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id
FROM Profile_values_view;
COMMIT;
Now what my doubt is, when do i need to execute the Insert Statement.
Say , if the View returns few millions of records , then loading such a data into Global Temporary table takes lot of time.
Then what is the use of Global Temporary tables and how can i improve the Performance using the same.
RajThanks for the responce ,
There are 2 to 3 complex views in our database, and there always be more than 5000+ users will be workinf on the application and is OLTP application. Those complex views are killing the application performance.
I what i felt was, if i create the Global Temporary tables for thow views and will be able to load the one third million of records returned by the views in to cache and can improve the application performance.
I have created the Global Temporary tables for 2 views with the option On Commit Preserve , But after am inserting the records into the Temp table and when i Issue the commit statement, the Temp table is getting Cleared.
I really got surpised of this behaviour as i know that with the Option On Commit Preserve , the rows should retain in the Temp Table, Instead , it's getting cleared.
Pelase suggest , what to do ??
Raj -
How to improve sorting performance
Hello
We are having bad performance for a query like this in:
select a.data
from a, b, c, d, e, f
where a.fk1 = b.pk
and a.fk2 = c.pk
and a.fk3 = d.pk
and a.fk4 = e.pk
and a.fk5 = f.pk
order by a.data, b.data, c.data
each foreign key has its index
we have oracle 9i
Without the order by clause, the cost is 3042; with the order by clause, it is 39842.
table 'a' is going to have millions of records, tables 'b' and 'c' are going to have thousands, and the others just hundreds.
How can i improve the performance of this query?
Thanks in advance!Hi
This is the explain plan; sorry, the values don't match with the ones i posted but the idea is the same:
selecting 6 fields and sorting by 5 of them:
DESCRIPTION OWNER OBJECT NAME COST CARDINALITY BYTES
SELECT STATEMENT, GOAL = CHOOSE 49644 675390 59434320
SORT ORDER BY 49644 675390 59434320
NESTED LOOPS 5404 675390 59434320
NESTED LOOPS 5404 675390 56057370
HASH JOIN 5404 675390 54031200
TABLE ACCESS FULL OMEGA GN_T_EMPRESA 2 165 1485
HASH JOIN 5379 675390 47952690
TABLE ACCESS FULL OMEGA GN_T_CALENDARIO 55 22695 272340
HASH JOIN 4135 675445 39851255
TABLE ACCESS FULL OMEGA GN_T_CALENDARIO 55 22695 272340
HASH JOIN 3090 675445 31745915
INDEX FAST FULL SCAN OMEGA CLNTE_PK 92 748225 3741125
HASH JOIN 1792 675445 28368690
TABLE ACCESS FULL OMEGA GNC_T_MERCADO 2 47 282
HASH JOIN 1776 675445 24316020
INDEX FULL SCAN OMEGA INDCDRES_PK 1 36 108
TABLE ACCESS FULL OMEGA GNC_T_OMG_FACTURACION 1762 675445 22289685
INDEX UNIQUE SCAN OMEGA TPO_PRPDAD_PK 1 3
INDEX UNIQUE SCAN OMEGA SCTRZCION_DNE_PK 1 5
Selecting 28 fields (some of them are calculations) and sorting by 8 of them:
DESCRIPTION OWNER OBJECT NAME COST CARDINALITY BYTES
SELECT STATEMENT, GOAL = CHOOSE 104577 675390 114816300
SORT ORDER BY 104577 675390 114816300
HASH JOIN 10909 675390 114816300
TABLE ACCESS FULL OMEGA GN_T_EMPRESA 2 165 1485
HASH JOIN 10859 675390 108737790
TABLE ACCESS FULL OMEGA GNC_T_TIPO_PROPIEDAD 2 100 800
HASH JOIN 10811 675390 103334670
TABLE ACCESS FULL OMEGA GN_T_SECTORIZACION_DANE 66 27046 676150
HASH JOIN 8403 675390 86449920
TABLE ACCESS FULL OMEGA GN_T_CALENDARIO 55 22695 431205
HASH JOIN 6328 675390 73617510
TABLE ACCESS FULL OMEGA GNC_T_CLIENTE 610 748225 9726925
HASH JOIN 3472 675390 64837440
TABLE ACCESS FULL OMEGA GN_T_CALENDARIO 55 22695 272340
HASH JOIN 1814 675445 56737380
TABLE ACCESS FULL OMEGA GNC_T_MERCADO 2 47 423
HASH JOIN 1787 675445 50658375
INDEX FULL SCAN OMEGA INDCDRES_PK 1 36 108
TABLE ACCESS FULL OMEGA GNC_T_OMG_FACTURACION 1762 675445 48632040
It decides not to use fk indexes.. until there cost is 10909 and after sort the cost is 104577
Here is the query:
select emp.d_codigo_fssri_empresa as d_codigo_fssri_gas
, exp.n_mes as n_mes_reporte
, exp.n_anio as n_anio_reporte
, vig.n_mes as n_mes_consumo
, vig.n_anio as n_anio_consumo
, mer.d_codigo_sector_cons as d_sector_usuario
, 30 as n_dias_facturados
, pckb_subg.fub_rango_consumo(fact.n_consumo_m3, decode(prop.d_codigo_tipo_propiedad, 's', prop.n_propiedades, 1) ) as n_rango_consumo
, nvl(fact.n_consumo_m3,0) as n_consumo
, decode(prop.d_codigo_tipo_propiedad, 's', prop.n_propiedades, 1) as n_usuarios
, to_char( nvl(fact.n_cargo_consumo_rango1,0), 'fm999999999999990d99') as n_cu
, to_char((nvl(fact.n_cargo_consumo_rango1,0) - nvl(fact.n_tarifa_aplicada_subsidio,0)), 'fm999999999999d99') as n_tarifa_aplicada
, 0 as n_factor
, (nvl(fact.n_facturacion_consumo,0) + nvl(fact.n_cargo_fijo,0)) as n_facturacion
, nvl(fact.n_valor_subsidio ,0) as n_subsidio
, 0 as n_ajuste
, emp.d_codigo_fssri_empresa as d_incumbente
, null as d_observaciones
, mer.d_codigo_tarifa as d_tarifa--fact.d_tarifa
, exp.f_fecha as f_expedicion--fact.f_expedicion
, fact.d_factura
, cli.d_poliza as d_niu --fact.d_nui
, nvl(prop.n_propiedades, 0) as n_inquilinatos
, sectd.d_departamento_dane as d_departamento
, sectd.d_municipio_dane as d_municipio
, sectd.d_poblacion_dane as d_poblado
, sectd.d_codigo_dane as d_codigo_dane_r
, fact.k_facturacion
from gnc_t_omg_facturacion fact,
gnc_t_indicadores_facturacion ind,
gnc_t_cliente cli,
gn_t_sectorizacion_dane sectd,
gnc_t_mercado mer,
gnc_t_tipo_propiedad prop,
gn_t_empresa emp,
omg_v_fecha_expedicion exp,
omg_v_fecha_vigor vig
where ind.k_indicadores = fact.r_indicador_consumo
and cli.k_cliente = fact.r_cliente
and sectd.k_sectorizacion_dane = fact.r_sectorizacion_dane
and mer.k_mercado = fact.r_mercado
and prop.k_tipo_propiedad = fact.r_tipo_propiedad
and emp.k_empresa = fact.r_empresa
and exp.k_calendario = fact.r_fecha_expedicion
and vig.k_calendario = fact.r_fecha_vigor
order by d_codigo_fssri_gas
, n_anio_reporte
, n_mes_reporte
, n_anio_consumo
, n_mes_consumo
, d_sector_usuario
, n_rango_consumo
, n_tarifa_aplicada
I appreciate all your advice, thank you -
How to improve Query Performance
Hi Friends...
I Want to improve query performance.I need following things.
1.What is the process to findout the performance?. Any transaction code's and how to use?.
2.How can I know whether the query is running good or bad ,ie. in performance praspect.
3.I want to see the values i.e. how much time it is taking to run?. and where the defect is?.
4.How to improve the query performance?. After I did the needfull things to improve performance, I want to see the query execution time. i.e. it is running fast or not?.
Eg..
Eg 1. Need to create aggregates.
Solution: where can I create aggregates?. Now I'm in production system. So where I need to create? .i.e. indevelopment or in Quality or in Production system?.
Any chenges I need to do in Development?.Because I'm in Production system.
So please tell me solution for my questions.
Thanks
Ganga
Message was edited by: Ganga Nhi ganga
please refer oss note :557870 : Frequently asked questions on query performance
also refer to
Prakash's weblog
/people/prakash.darji/blog/2006/01/27/query-creation-checklist
/people/prakash.darji/blog/2006/01/26/query-optimization
performance docs on query
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/3f66ba90-0201-0010-ac8d-b61d8fd9abe9
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/c8c4d794-0501-0010-a693-918a17e663cc
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/064fed90-0201-0010-13ae-b16fa4dab695
This is the oss notes of FAQ on query performance
1. What kind of tools are available to monitor the overall Query Performance?
1. BW Statistics
2. BW Workload Analysis in ST03N (Use Export Mode!)
3. Content of Table RSDDSTAT
2. Do I have to do something to enable such tools?
Yes, you need to turn on the BW Statistics:
RSA1, choose Tools -> BW statistics for InfoCubes
(Choose OLAP and WHM for your relevant Cubes)
3. What kind of tools is available to analyze a specific query in detail?
1. Transaction RSRT
2. Transaction RSRTRACE
4. Do I have an overall query performance problem?
i. Use ST03N -> BW System load values to recognize the problem. Use the number given in table 'Reporting - InfoCubes:Share of total time (s)' to check if one of the columns %OLAP, %DB, %Frontend shows a high number in all Info Cubes.
ii. You need to run ST03N in expert mode to get these values
5. What can I do if the database proportion is high for all queries?
Check:
1. If the database statistic strategy is set up properly for your DB platform (above all for the BW specific tables)
2. If database parameter set up accords with SAP Notes and SAP Services (EarlyWatch)
3. If Buffers, I/O, CPU, memory on the database server are exhausted?
4. If Cube compression is used regularly
5. If Database partitioning is used (not available on all DB platforms)
6. What can I do if the OLAP proportion is high for all queries?
Check:
1. If the CPUs on the application server are exhausted
2. If the SAP R/3 memory set up is done properly (use TX ST02 to find bottlenecks)
3. If the read mode of the queries is unfavourable (RSRREPDIR, RSDDSTAT, Customizing default)
7. What can I do if the client proportion is high for all queries?
Check whether most of your clients are connected via a WAN connection and the amount of data which is transferred is rather high.
8. Where can I get specific runtime information for one query?
1. Again you can use ST03N -> BW System Load
2. Depending on the time frame you select, you get historical data or current data.
3. To get to a specific query you need to drill down using the InfoCube name
4. Use Aggregation Query to get more runtime information about a single query. Use tab All data to get to the details. (DB, OLAP, and Frontend time, plus Select/ Transferred records, plus number of cells and formats)
9. What kind of query performance problems can I recognize using ST03N
values for a specific query?
(Use Details to get the runtime segments)
1. High Database Runtime
2. High OLAP Runtime
3. High Frontend Runtime
10. What can I do if a query has a high database runtime?
1. Check if an aggregate is suitable (use All data to get values "selected records to transferred records", a high number here would be an indicator for query performance improvement using an aggregate)
2. o Check if database statistics are update to data for the Cube/Aggregate, use TX RSRV output (use database check for statistics and indexes)
3. Check if the read mode of the query is unfavourable - Recommended (H)
11. What can I do if a query has a high OLAP runtime?
1. Check if a high number of Cells transferred to the OLAP (use "All data" to get value "No. of Cells")
2. Use RSRT technical Information to check if any extra OLAP-processing is necessary (Stock Query, Exception Aggregation, Calc. before Aggregation, Virtual Char. Key Figures, Attributes in Calculated Key Figs, Time-dependent Currency Translation) together with a high number of records transferred.
3. Check if a user exit Usage is involved in the OLAP runtime?
4. Check if large hierarchies are used and the entry hierarchy level is as deep as possible. This limits the levels of the hierarchy that must be processed. Use SE16 on the inclusion tables and use the List of Value feature on the column successor and predecessor to see which entry level of the hierarchy is used.
5. Check if a proper index on the inclusion table exist
12. What can I do if a query has a high frontend runtime?
1. Check if a very high number of cells and formatting are transferred to the Frontend (use "All data" to get value "No. of Cells") which cause high network and frontend (processing) runtime.
2. Check if frontend PC are within the recommendation (RAM, CPU MHz)
3. Check if the bandwidth for WAN connection is sufficient
REWARDING POINTS IS THE WAY OF SAYING THANKS IN SDN
CHEERS
RAVI -
Slower performance after compiling a package
Hi, I had an idea to improve the performance of our application and wanted to compare the original version with the improved one.
I created two identical schemas (same tables, packages and data) and ran a testjob. In both schemas it took the job about 200 seconds to complete.
I compiled the improved package in one of the schemas and ran the test again. To my surprise it took about 220 seconds to complete. I ran it again, still 220 seconds.
I was sure the code was faster than the original one and something was wrong. I decided to compile the original package and ran the test. This took almost 230 seconds !
I got timing back to normal after recompiling all package specs and bodies in the schema. Also then I finally found that the improvement worked.
Does anybody have an explanation for this behaviour?Way too much insufficient information.
No Oracle version.
No actual code.
No information about whether the schema's are in one database.
No dbms_profiler info, no run_stats info.
No statspack information.
The only thing we have is information from a stopwatch.
How do you expect help?
Sybrand Bakker
Senior Oracle DBA
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