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  • Running Non-profit Web Applications on Cloud/Dedicated Hosting [closed]

    - by cillosis
    Possible Duplicate: How to find web hosting that meets my requirements? I often times build web applications purely because I enjoy it. I like building useful tools or open source applications that don't come with a price tag. That being said, many of these applications can be quite complex requiring services beyond shared hosting (ex. specific PHP extensions). This leaves me with two options: Make the web application less complex and run on shared hosting. Fork out money for cloud or dedicated/VPS hosting. Considering the application is free (I don't make money off of it intentionally), the money for hosting comes out of my own pocket. I know I am not alone in this sticky situation. So the question is, what are the hosting options that provide more advanced features such as shell access via SSH, ability to install specific software/extensions (ex. if I wish to use a NoSQL DB such as Redis, MongoDB, or Cassandra), etc., at a free or low price point? I know free usually equates to bad/unreliable hosting -- but it's not always the case. There are a couple providers with free plans I know of: Amazon EC2 - Free micro-instance for 1 year AppHarbor - Cloud based .NET web application hosting w/ free plan. What else is available for hosting of non-profit applications?

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  • GWT: reporting crawling errors for non existing links

    - by pixeline
    Google Webmaster Tools is reporting crawl errors for links that never existed, and if i check the "Linked from" tab for a given error link, it shows another that never existed. They all mention joomla/ which is not the cms used on this domain (it's wordpress fyi). Exampled: http://example.com/joomla/index.php/component/user/register Linked from: http://example.com/joomla/component/user/login?return=L2###### What is going on? UPDATE 1 I tried something: I provided one of the faulty urls to the "Fetch as Google" functionality. Instead of returning a 404, it returns a 301 to another Joomla page. HTTP/1.1 301 Moved Permanently Server: Apache/2.4.3 X-Powered-By: PHP/5.4.4-10 X-Pingback: http://example.com/xmlrpc.php Expires: Wed, 11 Jan 1984 05:00:00 GMT Cache-Control: no-cache, must-revalidate, max-age=0 Pragma: no-cache Set-Cookie: PHPSESSID=1fgr5v2oip39miibuptd51s8h0; path=/ Set-Cookie: woocommerce_items_in_cart=0; expires=Sat, 12-Jan-2013 11:44:01 GMT; path=/ Location: http://example.com/joomla/component/user/register Content-Type: text/html; charset=iso-8859-1 Content-Length: 387 Date: Sat, 12 Jan 2013 12:44:01 GMT Via: 1.1 varnish Connection: keep-alive Accept-Ranges: bytes Age: 0 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>301 Moved Permanently</title> </head><body> <h1>Moved Permanently</h1> <p>The document has moved <a href="http://example.com/joomla/component/user/register">here</a>.</p> <p>Additionally, a 301 Moved Permanently error was encountered while trying to use an ErrorDocument to handle the request.</p> </body></html>

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  • Error while running Jetty Server on port 80 as non root user

    - by user75016
    All, I was trying to setup jetty on port 80 but its giving exception saying permission denied as below. I have setup jetty to work with setuid and configured start.ini as follows: OPTIONS=Server,jsp,jmx,resources,websocket,ext,plus,annotations,jta,jdbc,setuid (below as first configuration file in start.ini) etc/jetty-setuid.xml and jetty-setuid.xml file with username and group name of non root user. 2012-07-03 15:29:02.411:INFO:oejdp.ScanningAppProvider:Deployment monitor /opt/jetty-hightide-8.1.3.v20120416/contexts at interval 1 2012-07-03 15:29:02.454:WARN:oejuc.AbstractLifeCycle:FAILED [email protected]:80: java.net.SocketException: Permission denied java.net.SocketException: Permission denied at sun.nio.ch.Net.bind(Native Method) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:182) at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:311) at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:260) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59) at org.eclipse.jetty.server.Server.doStart(Server.java:273) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59) at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1215) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1138) 2012-07-03 15:29:02.455:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.Server@66da9ea4: java.net.SocketException: Permission denied java.net.SocketException: Permission denied

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  • Combo/Input LOV displaying non-reference key value

    - by [email protected]
    Its a very common use-case of LOV that we want to diplay a non key value in the LOV but store the key value in the DB. I had to do the same in a sample application I was building. During implementation of this, I realized that there are multiple ways to achieve this.I am going to describe each of these below.Example : Lets take an example of our classic HR schema. I have 2 tables Employee and Department where Dno is the foreign key attribute in Employee that references Department table.I want to create a LOV for Deparment such that the List always displays Dname instead of Dno. However when I update it, it it should update the reference key Dno.To achieve this I had 3 alternative1) Approach 1 :Create a composite VO and add the attributes from Department into Employee using a join.Refer the blog http://andrejusb.blogspot.com/2009/11/defining-lov-on-reference-attribute-in.htmlPositives :1. Easy to implement and use.2. We can use this attribute directly in queries defined on new attribute i.e If i have to display this inside query panel.Negative : We have to create an additional Join on the VO.Ex:SELECT Employees.EMPLOYEE_ID,        Employees.FIRST_NAME,        Employees.LAST_NAME,        Employees.EMAIL,        Employees.PHONE_NUMBER,       Department.Dno,        Department.DnameFROM EMPLOYEES Employees, Department Department WHERE Employees.Dno = Department .Dno2) Approach 2 :

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  • Are there opportunities working as full-time paid programmer for Non-profit organizations

    - by Rick
    Some recent events in my life have made me want to contribute more to causes I believe in rather than just working for a profit-driven company. I have been thinking that if I could find a non-profit organization that I like and believe in then I might feel more fulfilled working for them. I have a decent amount of web development experience and currently work as a Java / Spring web developer. I realize the compensation wouldn't have the same "ceiling" potential as for-profit but am wondering if its possible to get at least something close to a market rate for work as I am planning to start a family sometime soon and still need a legitimate income. If anyone has any knowledge or experience about this sort of thing would be happy to hear from you. EDIT: Without getting in to too much personal detail, I have a relative who recently passed away who suffered from a mental illness so while it doesn't have to be an organization specifically dedicated to this, I am hoping to work for something along these lines at least where there is more of a social cause rather than just working on an open-source project whose only cause is the advancement of technology.

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  • Tip: Recording Non-Maximized Applications in UPK

    - by Marc Santosusso
    Have you ever wanted to record an application that would not maximize, or an application that would look strange maximized? Or perhaps your Windows Desktop has become cluttered with icons and you don't want to capture the clutter in your recordings. Here's a tip that will help: create a background for your recording. Create a blank HTML file with a black background in your favorite HTML editor. Or download this sample file: UPK_Recording_Background.html (right click to save). If you would prefer a different color background in the sample file, open it in Notepad and change “#000” to a different HTML color. Open UPK_Recording_Background.html in its own web browser window. Press F11 to make the web browser window full screen. This should give you a completely black screen. (This works great in modern versions of the most popular browsers. I successfully used Firefox 15, Chrome 22, and IE 9. Open or switch to the desired application so that it sits on top of the full screen browser window. If the application you are recording is also in a browser, it is important that it be in a separate browser window from the UPK_Recording_Background.html. Record your topic normally. The above steps create a recording background using an HTML file and a web browser. This is just one method, for instance you could do the same thing with an image editor and an image viewer with a full screen view. Now you can record a non-maximized application without a distracting background. I hope you find this to be a helpful tip. Let us know what you think in the comments.

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  • How to highlight non-rectangular hotspots?

    - by HuseyinUslu
    So my question is highly related to Creating non-rectangular hotspots and detecting clicks. Yet again, I've irregular hot-spots (think the game Risk). So basically, we can detect clicks on these hot-spots easily using color key mapping as discussed in above question which I don't have any problems implementing (which is also covered here in details). The problem is about highlighting these irreguar hotspots. So let me explain the question a bit more - the above color key mapping guide uses this as a world map: Then the author color-maps the imaginary countries: Now we can now detect the country the pointer is over. In the same article author mentions outlining countries on mouse-over. Though to get the effect, he creates unique border assets for each country - like: For the game I'm working on I'm using the same color-key mapping idea to detect hot-spots, but I didn't like the way of highlighting hot-spots. Coloring all the hot-spots is already a time-consuming job for me - as I have 25+ hot-spots for each map. Further, the need to have 25 unique border/highlight asset per hot-spot doesn't sound right. Anyone have a better idea/suggestion on highlighting these hot-spots?

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  • Non use of persisted data – Part deux

    - by Dave Ballantyne
    In my last blog I showed how persisted data may not be used if you have used the base data on an include on an index. That wasn't the only problem ive had that showed the same symptom.  Using the same code as before,  I was executing similar to the below : select BillToAddressID,SOD.SalesOrderDetailID,SOH.CleanedGuid from sales.salesorderheader SOH join Sales.SalesOrderDetail SOD on SOH.SalesOrderID = SOD.SalesOrderID But,  due to a distribution error in statistics i found it necessary to use a table hint.  In this case, I wanted to force a loop join select BillToAddressID,SOD.SalesOrderDetailID,SOH.CleanedGuid from sales.salesorderheader SOH inner loop join Sales.SalesOrderDetail SOD on SOH.SalesOrderID = SOD.SalesOrderID   But, being the diligent  TSQL developer that I am ,looking at the execution plan I noticed that the ‘compute scalar’ operator was again calling the function.  Again,  profiler is a more graphic way to view this…..   All very odd,  just because ive forced a join , that has NOTHING, to do with my persisted data then something is causing the data to be re-evaluated. Not sure if there is any easy fix you can do to the TSQL here, but again its a lesson learned (or rather reinforced) examine the execution plan of every query you write to ensure that it is operating as you thought it would.

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  • Dual Boot Installing Ubuntu 12.04 with Windows 7 (64) on a non UEFI system

    - by Randnum
    I cannot seem to install the correct boot loader for a non-UEFI firmware system. I'm trying to install Ubuntu 12.04 and Windows 7 (64) which are technically compatible with GPT but for windows only if the firmware is UEFI enabled. My system uses the old BIOS system and does not support UEFI. Therefore, whenever I finish my Ubuntu install and try to install Windows I get a "cannot install to GPT partition type" error. Even if I use Gparted to format a special NTFS file format for windows it can't handle the GPT partition style because it doesn't have UEFI. But my ubuntu install always forces GPT during installation and never asks if I want to install the old BIOS style MBR instead. How do I resolve this? Both OS's will install fine on their own the problem is when I try to install the second OS it doesn't recognize any of the other's partitions and tries to rewrite it's own on top of the other. I've tried both OS's first and always run into the same problem. Since there is no way to make Windows recognize GPT without upgrading my Motherboard how do I tell Ubuntu to use the old BIOS MBR on install? Do I have to download a special Ubuntu with a specific grub version? or should I manaually configure my partition somehow to force it not to use GPT? Thank you,

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  • Effective handling of variables in non-object oriented programming

    - by srnka
    What is the best method to use and share variables between functions in non object-oriented program languages? Let's say that I use 10 parameters from DB, ID and 9 other values linked to it. I need to work with all 10 parameters in many functions. I can do it next ways: 1. call functions only with using ID and in every function get the other parameters from DB. Advantage: local variables are clear visible, there is only one input parameter to function Disadvantage: it's slow and there are the same rows for getting parameters in every function, which makes function longer and not so clear 2. call functions with all 10 parameters Advantage: working with local variables, clear function code Disadvantage: many input parameters, what is not nice 3. getting parameters as global variables once and using them everywhere Advantage - clearer code, shorter functions, faster processing Disadvantage - global variables - loosing control of them, possibility of unwanted overwriting (Especially when some functions should change their values) Maybe there is some another way how to implement this and make program cleaner and more effective. Can you say which way is the best for solving this issue?

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  • Count function on tree structure (non-binary)

    - by Spevy
    I am implementing a tree Data structure in c# based (largely on Dan Vanderboom's Generic implementation). I am now considering approach on handling a Count property which Dan does not implement. The obvious and easy way would be to use a recursive call which Traverses the tree happily adding up nodes (or iteratively traversing the tree with a Queue and counting nodes if you prefer). It just seems expensive. (I also may want to lazy load some of my nodes down the road). I could maintain a count at the root node. All children would traverse up to and/or hold a reference to the root, and update a internally settable count property on changes. This would push the iteration problem to when ever I want to break off a branch or clear all children below a given node. Generally less expensive, and puts the heavy lifting what I think will be less frequently called functions. Seems a little brute force, and that usually means exception cases I haven't thought of yet, or bugs if you prefer. Does anyone have an example of an implementation which keeps a count for an Unbalanced and/or non-binary tree structure rather than counting on the fly? Don't worry about the lazy load, or language. I am sure I can adjust the example to fit my specific needs. EDIT: I am curious about an example, rather than instructions or discussion. I know this is not technically difficult...

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  • Ubuntu 12.04 LTS - Apple iPad 3 (iOS 7 non-jailbroken) USB connection problem

    - by Eldian
    I've bought an Apple iPad 3 (iOS 7 non-jailbroken), and I'm trying to connect it to my PC running Ubuntu 12.04 through the original USB cable. After I plugged in the cable, I got this message on the PC: The device 'iPad' is locked. Enter the passcode on the device and click 'Try again'. Slide to unlock on iPad, it's OK, I got this message on the PC again: The device 'iPad' is locked. Enter the passcode on the device and click 'Try again'. iPad: Trust this computer? TRUST/DON'T TRUST I've selected TRUST. PC: Unable to mount - DBus error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus) OK, I've read some forums, everywhere there was this solution: "Install: ifuse, libimobiledevice-utils, Rhythmbox OK, I've installed them through terminal, and used the idevicepair unpair && idevicepair pair command also in the terminal. Then I got this message: Device is not paired with this host. I don't know what to do. Please help!

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  • How to highlight non-rectengular hotspots?

    - by HuseyinUslu
    So my question is highly related to Creating non-rectangular hotspots and detecting clicks. Yet again, I've irregular hot-spots (think the game Risk). So basically, we can detect clicks on these hot-spots easily using color key mapping as discussed in above question which I don't have any problems implementing (which is also covered here in details). The problem is about highlighting these irreguar hotspots. So let me explain the question a bit more - the above color key mapping guide uses this as a world map; then the author color-maps the imaginary countries; which we can now detect the country the pointer is over. In the same article author mentions outlining countries on mouse-over; though to get the effect, he creates unique border assets for each country - like; So for the game I'm working on I'm using the same color-key mapping idea to detect hot-spots, but I didn't like the way of highlighting hot-spots. Coloring all the hot-spots is already a great work for me - as I've 25+ hot-spots for each map - further more the need to have 25 unique border/highlight asset per hot-spot doesn't sound right. Anyone have a better idea/suggestion on highlighting these hot-spots?

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  • touch detection of non-rectangular sprites (cocos2d)

    - by hogni89
    What is the correct way to implement a non-rectangular sprite in Cocos2d? I am working on a jigsaw puzzle. And therefor do our sprites have some strange forms (Jigsaw puzzle bricks). As of now, we have implemented the "detect" this way: - (void)selectSpriteForTouch:(CGPoint)touchLocation { CCSprite * newSprite = nil; // Loop array of sprites for (CCSprite *sprite in movableSprites) { // Check if sprite is hit. // TODO: Swap if with something better. if (CGRectContainsPoint(sprite.boundingBox, touchLocation)) { newSprite = sprite; break; } } if (newSprite != selSprite) { // Move along, nothing to see here // Not the problem } } - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchLocation = [self convertTouchToNodeSpace:touch]; [self selectSpriteForTouch:touchLocation]; return TRUE; } I know that the problem is in the keyword "sprite.boundingBox". Is there a better way of implementing this, OR is it a limit when using sprites based on .png's? If so, how should I proceed? I'm new to iPhone and game development :D

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  • Lost all non-linux hard drives

    - by Rick
    I've somehow lost access to all my non-linux drives. I'm not sure how. I have two other hard drives set up (a windows boot and an external usb I was using under windowsxp). A few days ago I could access both under linux with no problem. Now, I see them listed under media, but when I click on them, nothing is there (same thing happens when I go there in a term window). Now, the computer (under linux) sees them, but I can't see anything in them. (in nautilus it shows "(Empty)") Any ideas what happened or how to get access to them again? My guesses as to what might have caused it: -I was trying to set up AdobeAIR (unsuccessfully) and had to make and remove a couple of symbolic links. Never got that to work but maybe links I made or removed did something? -I was also trying to set up nautilus so that I could enter it with sudo permission. I also didn't figure out how to do that successfully, but maybe something I did while trying messed it up? (I think I installed and uninstalled nautilus-actions configuration tool). Note: I'm working on a relatively new install of 12.04

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  • Technical/Programming/Non-SEO Pros and Cons of WWW or no-WWW?

    - by Ingenutrix
    What are technical/programming/non-SEO pros and cons of www or no-www, for domains as well as sub-domains? From Jeff Atwood's twitter at http://twitter.com/codinghorror/status/1637428313 : "sort of regretting the no-www choice because it causes full cookie submission to ALL subdomains. :(" What does this mean? Is there a blog post or article detailing this? What other specific issues and their reasons should be considered for www. vs no-www. Update: On searching for more info on this topic, I found following helpful ( in addition to Laurence Gonsalves answer ) : Dropping the WWW Prefix Impact on search results: Jivlain's and Isaac Lin's comments Use Cookie-free Domains for Components on StackOverflow : Should I default my website to www.foo or not? on StackOverflow : When should one use a ‘www’ subdomain?

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  • Can Tornado communicate with Cassandra, in Non-blocking asynchronous style?

    - by takaomag
    I'm working on a web project, which have to process so many client requests. So I am considering to use Cassandra and tornado. Tornado seems to have a build-in client(tornado.httpclient.AsyncHTTPClient), which can do http Non-Blocking request. But, Cassandra uses Thrift protocol. Using Thrift, Tornado seems to be blocked while quering to Cassandra. Has anyone got expereince? Please suggest how should I do. Or, is there any add-on module for this purpose? Thanks.

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  • Why ????? is displayed instead of non-english characters?

    - by smhnaji
    I first created a simple HTML page that uses UTF-8 as its character encoding. Then I moved the HTML content as a view in codeigniter and it was still ok (I had used non-english characters that were ok as always) I added a simple dynamic functionality (there is a contact us form in it that emails users feedback to site admin). Please note that the characters were ok at localhost (which is a LAMP server running on Ubuntu 12.04 LTS) Strange is that when I uploaded the app to server, all persian characters are shown as ???? (For example ??? (which means Name) is shown ??? and so so...) I have not even connected to mysql or any other DBMS. It's the only page in the website (it's more an under construction page) and nothing else has been used in it. Maybe I should state that I have also used session library to thank the user after his feedback was sent to admins, nothing else. I have really no idea about the problem. UPDATE Now I can see that the problem is only with cPanel. On Directadmin I can see that everything is normal. Both Chromium and Firefox DO use UTF-8 as page's character encoding. URL is http://WEBSITE.COM/dmf/dynamic/ (dmf is the abbreviation of the project name!). There is nothing non-english in the URL. The page's code is as follows: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>??? ???????</title> <link rel="stylesheet" type="text/css" href="<?php echo base_url('template/css/style.css'); ?>" /> <!-- 1. jquery library --> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"> </script> <!-- 2. flowplayer --> <script src="http://releases.flowplayer.org/5.1.1/flowplayer.min.js"></script> <!-- 3. skin --> <link rel="stylesheet" type="text/css" href="http://releases.flowplayer.org/5.1.1/skin/minimalist.css" /> </head> <body> <div id="wrapper"> <header> <h1>??? ???????</h1> </header> <section id="box-container"> <?php echo form_open('contact', "id='contact-us'"); echo form_fieldset('???? ?? ??'); if ($this->session->userdata('mailsent')) { echo '<div>??????? ???? ??? ????? ??</div>'; $this->session->sess_destroy(); } echo '<input tabindex="1" id="name-in" value="???" type="text" name="name"/> <input tabindex="2" id="mail-in" value="?????" type="email" name="email"/> <textarea tabindex="3" id="content-in" name="message">???????</textarea> <input tabindex="4" id="submit" type="submit" value="?????" />'; echo '<div class="clear"></div>'; echo form_fieldset_close(); echo form_close(); ?> <div id="sms-comp"> <h2>?????? ??????</h2> <p> <span id="comp-title">?? ??? ????</span> ???? ??????? ???? ??? </p> </div> <div id="last-program"> <h2>?????? ????? ??????</h2> <div class="flowplayer"> <video id="my_video_1" width="212" height="126" poster="<?php echo base_url('template/images/img.jpg'); ?>" controls="controls" src="http://archive.org/download/Pbtestfilemp4videotestmp4/video_test.ogv" type='video/mp4'> </video> </div> </div> <div class="clear"></div> </section> </div> <footer> ????? ? ????? : <a href="http://powered-by.com/" target="_blank">????? ???</a> </footer> </body> </html>

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  • Postgres : Post statement (or insert) asynchronous, non-blocking processing.

    - by Hassan Syed
    I'm wondering if it is possible, that after a collection of rows is inserted, to initiate an operation that is executed asynchronously, is non-blocking, and doesn't need to inform the originator of the request - of the result. I am working with large amounts of events and I can guarantee that the post-insert logic will not fail -- I just want to have a single insert thread in my event-sources, and I want this thread to keep flying without blocking, and without being responsible for any post-delivery book-keeping. I can tell you that I would potentially have a 100 of these jobs executing concurrently and each job might operate on 5 tables with anywhere between 200-1000 inserts on each of these tables. A hint in the right direction should be enough.

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  • How can I handle validation of non-latin script input in PHP?

    - by Matt
    I am trying to adapt a php application to handle non-latin scripts (specifically: Japanese, simplified Chinese and Arabic). The app's data validation routines make frequent use of regular expressions to check input, but I am not sure how to adapt the \w character type to other languages without installing additional locales on the system (which I cannot rely on). Previous developers to have worked on the app have simply added needed characters to the regexes as the number of languages we supported grew (you frequently see "[\wÀÁÂÃÄÅÆÇÈÉ... etc" in the code), but I can't really do this for all the alphabets I need to support now. Does anybody out there have some advice on how to tackle this?

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  • simple question about oracle indexes

    - by john
    If I have an oracle query like below: SELECT * FROM table_a where A = "1", B = "2", C = "3" for this query to pickup one of the indexes of table_a...does the index need to be on all 3 of these columns? What I am asking is: What if Index is on A, B, C, D? What if Index is on B, C? Will the index only be picked when it is on A, B, C?

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  • Rebuilding indexes does not change the fragmentation % for nonclustered indexes.

    - by Noddy
    For starters, I am no DBA and I am working on rebuilding the indexes. I made use of the amazing TSQL script from msdn to alter index based onthe fragmente percent returned by dm_db_index_physical_stats and if the fragment percent is more than 30 then do a REBUILD or do a REORGANISE. What I found out was, in the first iteration, there were 87 records which needed defrag.I ran the script and all the 87 indexes (clustered & nonclustered) were rebuilt or reindexed. When I got the stats from dm_db_index_physical_stats , there were still 27 records which needed defrag and all of theses were NON CLUSTERED Indexes. All the Clustered indexes were fixed. No matter how many times I run the script to defrag these records, I still have the same indexes to be defraged and most of them with the same fragmentation %. Nothing seems to change after this. Note: I did not perform any inserts/ updates/ deletes to the tables during these iterations. Still the Rebuild/reorganise did not result in any change. More information: Using SQL 2008 Script as available in msdn http://msdn.microsoft.com/en-us/library/ms188917.aspx Could you please explain why these 27 records of non clustered indexes are not being changed/ modified ? Any help on this would be highly appreciated. Nod

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  • How to understand these lines in apache.log

    - by chefnelone
    I just get 19000 lines like these in the apache.log file for my site example.com. My hosting provider shut down the hosting and notified me that I need to avoid to activate my hosting again. I understand that I got a big amount of visits but I don't know how to avoid this. 88.190.47.233 - - [27/Jun/2013:09:51:34 +0200] "GET / HTTP/1.0" 403 389 "http://example.com/" "Opera/9.80 (Windows NT 6.1; U; ru) Presto/2.10.289 Version/12.02" 417 88.190.47.233 - - [27/Jun/2013:09:51:34 +0200] "GET / HTTP/1.0" 403 389 "http://example.com/" "Opera/9.80 (Windows NT 6.1; U; ru) Presto/2.10.289 Version/12.02" 417 175.44.28.155 - - [27/Jun/2013:09:51:44 +0200] "GET /en/user/register HTTP/1.1" 403 503 "http://example.com/en/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;)" 248 175.44.29.140 - - [27/Jun/2013:09:53:19 +0200] "GET /en/node/1557?page=2 HTTP/1.0" 403 517 "http://example.com/en/node/1557?page=2" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.12 Safari/535.11" 491 These are the lines from apache-error.log. There are more than 35000 lines like this. [Thu Jun 27 09:50:58 2013] [error] [client 5.39.19.183] (13)Permission denied: access to /index.php denied, referer: http://example.com/ [Thu Jun 27 09:51:03 2013] [error] [client 125.112.29.105] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/node/1557?page=1#comment-701 [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/node/1557?page=1#comment-701 [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.html denied, referer: http://example.com/en/node/1557?page=1#comment-701 [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.htm denied, referer: http://example.com/en/node/1557?page=1#comment-701 [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.php denied, referer: http://example.com/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.html denied, referer: http://example.com/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.htm denied, referer: http://example.com/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.php denied, referer: http://example.com/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.html denied, referer: http://example.com/ [Thu Jun 27 09:51:34 2013] [error] [client 88.190.47.233] (13)Permission denied: access to /index.htm denied, referer: http://example.com/ [Thu Jun 27 09:51:44 2013] [error] [client 175.44.28.155] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/ [Thu Jun 27 09:53:19 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/node/1557?page=2 [Thu Jun 27 09:53:20 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/node/1557?page=2 [Thu Jun 27 09:53:20 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.html denied, referer: http://example.com/en/node/1557?page=2 [Thu Jun 27 09:53:20 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.htm denied, referer: http://example.com/en/node/1557?page=2 [Thu Jun 27 09:53:21 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.php denied, referer: http://example.com/ [Thu Jun 27 09:53:21 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.html denied, referer: http://example.com/ [Thu Jun 27 09:53:21 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.htm denied, referer: http://example.com/ [Thu Jun 27 09:53:22 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.php denied, referer: http://example.com/ [Thu Jun 27 09:53:22 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.html denied, referer: http://example.com/ [Thu Jun 27 09:53:22 2013] [error] [client 175.44.29.140] (13)Permission denied: access to /index.htm denied, referer: http://example.com/ [Thu Jun 27 09:56:53 2013] [error] [client 113.246.6.147] (13)Permission denied: access to /index.php denied, referer: http://example.com/en/ [Thu Jun 27 09:58:58 2013] [error] [client 108.62.71.180] (13)Permission denied: access to /index.php denied, referer: http://example.com/

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  • Optimistic non-locking copy of InnoDB .frm files

    - by jothir
    MySQL Enterprise Backup(MEB) does hot backup of innodb data and log files. Till MEB 3.6.1, the user backs up the only innodb tables in a 3 step process: STEP 1. Take backup using --only-innodb option STEP 2. Temporarily make the table read only by executing “FLUSH TABLES WITH READ LOCK” MEB 3.7.0 has an enhancement to innodb file copying. The .frm files gets copied along with the hot backup done for innodb files. I would like to make the blog a little interactive by explaining the feature as answers: 1. What are these .frm files? The files containing the metadata, such as the table definition, of a MySQL table. For backups, the full set of .frm files are always required along with the backup data, to be able to restore tables that are altered or dropped after the backup. 2. Can the .frm files not be copied by MEB itself? --only-innodb-with-frm is the new option introduced in MEB 3.7.1 to do a copy of .frm files without locking the tables during backup operation itself. This is to reduce the pain of manually copying the .frm files. The option is intended for backups where you can ensure that no ALTER TABLE, CREATE TABLE, DROP TABLE, or other DDL statements modify the .frm files for InnoDB tables during the backup operation. 3. How is data consistency ensured? MEB does validation of the .frm files after copying by comparing with the server directory to see if the timestamps of any of the .frm files is greater than the saved system time (check .frm time).  This change in timestamp of the .frm files will show if a table is altered during the process of backup. The total number of frm files in the server directory is also verified against the copied contents. If the number of .frm files is less compared to server directory, it shows that table/tables have been dropped during the process of backup. If the number of .frm files is more compared to server directory, it shows that new table/tables have been created during backup operation. 4. How does MEB handle data inconsistency? MEB copies the .frm files through several iterations,  does the validation and throws a WARNING if there is any inconsistency found in .frm files at the end of backup operation. This means the user is warned of some DDL operations that had occurred during backup operation, and has to manually copy the .frm files or do a backup again. 5. What is the option and explain its usage? The option introduced is --only-innodb-with-frm which does optimistic copy of .frm files without locking. This can be used when the user wants to backup only innodb tables along with .frm files. The option can take one of the 2 values: all | related. --only-innodb-with-frm=all does copy of all .frm files of all innodb tables. --only-innodb-with-frm=related works in conjunction with --include option.This is to allow partial backup of .frm files corresponding to the tables specified in --include. Let me show the usage with example output: ./mysqlbackup -uroot --backup-dir=/logs/backupWithFrmAll --only-innodb-with-frm=all backup MySQL Enterprise Backup version 3.7.1 [2012/06/05] Copyright (c) 2003, 2012, Oracle and/or its affiliates. All Rights Reserved. INFO: Starting with following command line ... ./mysqlbackup -uroot --backup-dir=/logs/backupWithFrmAll        --only-innodb-with-frm=all backup INFO: Got some server configuration information from running server. IMPORTANT: Please check that mysqlbackup run completes successfully.            At the end of a successful 'backup' run mysqlbackup            prints "mysqlbackup completed OK!". --------------------------------------------------------------------                       Server Repository Options: --------------------------------------------------------------------  datadir                          =  /mysql/trydb/  innodb_data_home_dir             =    innodb_data_file_path            =  ibdata1:10M:autoextend  innodb_log_group_home_dir        =  /mysql/trydb/  innodb_log_files_in_group        =  2  innodb_log_file_size             =  5242880 --------------------------------------------------------------------                       Backup Config Options: --------------------------------------------------------------------  datadir                          =  /logs/backupWithFrmAll/datadir  innodb_data_home_dir             =  /logs/backupWithFrmAll/datadir  innodb_data_file_path            =  ibdata1:10M:autoextend  innodb_log_group_home_dir        =  /logs/backupWithFrmAll/datadir  innodb_log_files_in_group        =  2  innodb_log_file_size             =  5242880 mysqlbackup: INFO: Unique generated backup id for this is 13451979804504860 mysqlbackup: INFO: Uses posix_fadvise() for performance optimization. mysqlbackup: INFO: System tablespace file format is Antelope. mysqlbackup: INFO: Found checkpoint at lsn 1656792. mysqlbackup: INFO: Starting log scan from lsn 1656320. 120817 15:36:22 mysqlbackup: INFO: Copying log... 120817 15:36:22 mysqlbackup: INFO: Log copied, lsn 1656792.          We wait 1 second before starting copying the data files... 120817 15:36:23 mysqlbackup: INFO: Copying /mysql/trydb/ibdata1 (Antelope file format). 120817 15:36:23 mysqlbackup: INFO: Copying /mysql/trydb/innodb1/table2.ibd (Antelope file format). 120817 15:36:23 mysqlbackup: INFO: Copying /mysql/trydb/innodb1/table3.ibd (Antelope file format). 120817 15:36:23 mysqlbackup: INFO: Copying /mysql/trydb/innodb1/table1.ibd (Antelope file format). mysqlbackup: INFO: Opening backup source directory '/mysql/trydb/' 120817 15:36:23 mysqlbackup: INFO: Starting to backup .frm files in the subdirectories of /mysql/trydb/ mysqlbackup: INFO: Copying innodb data and logs during final stage ... mysqlbackup: INFO: A copied database page was modified at 1656792.          (This is the highest lsn found on page)          Scanned log up to lsn 1656792.          Was able to parse the log up to lsn 1656792.          Maximum page number for a log record 0 mysqlbackup: INFO: Copying non-innodb files took 2.000 seconds 120817 15:36:25 mysqlbackup: INFO: Full backup completed! mysqlbackup: INFO: Backup created in directory '/logs/backupWithFrmAll' -------------------------------------------------------------   Parameters Summary          -------------------------------------------------------------   Start LSN                  : 1656320   End LSN                    : 1656792 ------------------------------------------------------------- mysqlbackup completed OK! bash$ ls /logs/backupWithFrmAll/datadir/innodb1/ table1.frm  table1.ibd  table2.frm  table2.ibd  table3.frm  table3.ibd Here the backup directory contains all the .frm files of all the innodb tables. ./mysqlbackup -uroot --backup-dir=/logs/backupWithFrm --include="innodb1.table3.*" --only-innodb-with-frm=related backup MySQL Enterprise Backup version 3.7.1 [2012/06/05] Copyright (c) 2003, 2012, Oracle and/or its affiliates. All Rights Reserved. INFO: Starting with following command line ... ./mysqlbackup -uroot --backup-dir=/logs/backup371frm        --include=innodb1.table3.* --only-innodb-with-frm=related backup INFO: Got some server configuration information from running server. IMPORTANT: Please check that mysqlbackup run completes successfully.            At the end of a successful 'backup' run mysqlbackup            prints "mysqlbackup completed OK!". --------------------------------------------------------------------                       Server Repository Options: --------------------------------------------------------------------  datadir                          = /mysql/trydb/  innodb_data_home_dir             =    innodb_data_file_path            =  ibdata1:10M:autoextend  innodb_log_group_home_dir        =  /mysql/trydb  innodb_log_files_in_group        =  2  innodb_log_file_size             =  5242880 --------------------------------------------------------------------                       Backup Config Options: --------------------------------------------------------------------  datadir                          =  /logs/backupWithFrm/datadir  innodb_data_home_dir             =  /logs/backupWithFrm/datadir  innodb_data_file_path            =  ibdata1:10M:autoextend  innodb_log_group_home_dir        =  /logs/backupWithFrm/datadir  innodb_log_files_in_group        =  2  innodb_log_file_size             =  5242880 mysqlbackup: INFO: Unique generated backup id for this is 13451973458118162 mysqlbackup: INFO: Uses posix_fadvise() for performance optimization. mysqlbackup: INFO: The --include option specified: innodb1.table3.* mysqlbackup: INFO: System tablespace file format is Antelope. mysqlbackup: INFO: Found checkpoint at lsn 1656792. mysqlbackup: INFO: Starting log scan from lsn 1656320. 120817 15:25:47 mysqlbackup: INFO: Copying log... 120817 15:25:47 mysqlbackup: INFO: Log copied, lsn 1656792.          We wait 1 second before starting copying the data files... 120817 15:25:48 mysqlbackup: INFO: Copying /mysql/trydbibdata1 (Antelope file format). 120817 15:25:49 mysqlbackup: INFO: Copying /mysql/trydbinnodb1/table3.ibd (Antelope file format). mysqlbackup: INFO: Opening backup source directory '/mysql/trydb' 120817 15:25:49 mysqlbackup: INFO: Starting to backup .frm files in the subdirectories of /mysql/trydb mysqlbackup: INFO: Copying innodb data and logs during final stage ... mysqlbackup: INFO: A copied database page was modified at 1656792.          (This is the highest lsn found on page)          Scanned log up to lsn 1656792.          Was able to parse the log up to lsn 1656792.          Maximum page number for a log record 0 mysqlbackup: INFO: Copying non-innodb files took 2.000 seconds 120817 15:25:51 mysqlbackup: INFO: Full backup completed! mysqlbackup: INFO: Backup created in directory '/logs/backupWithFrm' -------------------------------------------------------------   Parameters Summary          -------------------------------------------------------------   Start LSN                  : 1656320   End LSN                    : 1656792 ------------------------------------------------------------- mysqlbackup completed OK! bash$ ls /logs/backupWithFrm/datadir/innodb1/ table3.frm table3.ibd Thus the backup directory contains only the .frm file matching the innodb table name specified in --include option. In a nutshell, we present our great new option --only-innodb-with-frm which is a true hot InnoDB-only backup with .frm files, but with an additional check, if any DDL happened during the backup. If a DDL has happened, the DBA can decide if to repeat the backup, or to live with the potential inconsistency. This is the ideal solution for users that have all their "real" data in InnoDB and seldom change their schemas. You may also like: http://dev.mysql.com/doc/mysql-enterprise-backup/3.7/en/backup-partial-options.html   STEP 3. Manually copy the .frm files of innodb tables to the destination directory where backup is stored.

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  • B-trees, databases, sequential inputs, and speed.

    - by IanC
    I know from experience that b-trees have awful performance when data is added to them sequentially (regardless of the direction). However, when data is added randomly, best performance is obtained. This is easy to demonstrate with the likes of an RB-Tree. Sequential writes cause a maximum number of tree balances to be performed. I know very few databases use binary trees, but rather used n-order balanced trees. I logically assume they suffer a similar fate to binary trees when it comes to sequential inputs. This sparked my curiosity. If this is so, then one could deduce that writing sequential IDs (such as in IDENTITY(1,1)) would cause multiple re-balances of the tree to occur. I have seen many posts argue against GUIDs as "these will cause random writes". I never use GUIDs, but it struck me that this "bad" point was in fact a good point. So I decided to test it. Here is my code: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[T1]( [ID] [int] NOT NULL CONSTRAINT [T1_1] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO CREATE TABLE [dbo].[T2]( [ID] [uniqueidentifier] NOT NULL CONSTRAINT [T2_1] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO declare @i int, @t1 datetime, @t2 datetime, @t3 datetime, @c char(300) set @t1 = GETDATE() set @i = 1 while @i < 2000 begin insert into T2 values (NEWID(), @c) set @i = @i + 1 end set @t2 = GETDATE() WAITFOR delay '0:0:10' set @t3 = GETDATE() set @i = 1 while @i < 2000 begin insert into T1 values (@i, @c) set @i = @i + 1 end select DATEDIFF(ms, @t1, @t2) AS [Int], DATEDIFF(ms, @t3, getdate()) AS [GUID] drop table T1 drop table T2 Note that I am not subtracting any time for the creation of the GUID nor for the considerably extra size of the row. The results on my machine were as follows: Int: 17,340 ms GUID: 6,746 ms This means that in this test, random inserts of 16 bytes was almost 3 times faster than sequential inserts of 4 bytes. Would anyone like to comment on this? Ps. I get that this isn't a question. It's an invite to discussion, and that is relevant to learning optimum programming.

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