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• Closing several android activities simultaneously

  - by teedyay

  In my application you can navigate through several Activities until the Activity stack is quite deep. We'd like a button on every Activity that will take you straight back to the main menu - i.e. pop all Activities from the stack except the first one. I've put the button in a View that I can easily put on every Activity in the application, but I can't figure out how to close several Activities in one fell swoop. (If possible, it would be good if the View could work out how many Activities to close by itself - i.e. detect how deep on the stack its own Activity is.)

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• Does anyone know of a vim plugin or script to convert special characters to their corresponding HTML

  - by Alan

  I develop websites for corporate clients, so we see the ®, ™, etc. chars a whole lot. Sometimes I paste in huge blocks of copy, which might even contain pretty quotes (“ ”) or other strange characters from word processors. So, my question is this: Does anyone know of a vim plugin or script that can, in one fell swoop, convert all these characters to html entities? I think this covers all the bases of the entities it would be nice to have: http://web.forret.com/tools/charmap.asp So, for the characters above, they would be replaced with &reg;, &trade;, &ldquo;, &rdquo;, etc. I tried the htmlspecialchars vimball (http://www.vim.org/scripts/script.php?script_id=2377), but no dice. It only performs its replacement like the PHP htmlsepcialchars function, replacing html-conflicting characters, and doesn't cover any additional special characters.

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• Objective-C: how to allocate array of GLuint

  - by sashaeve

  I have an array of GLuint with fixed size: GLuint textures[10]; Now I need to set a size of array dynamically. I wrote something like this: *.h: GLuint *textures; *.m: textures = malloc(N * sizeof(GLuint)); where N - needed size. Then it used like this: glGenTextures(N, &textures[0]); // load texture from image -(GLuint)getTexture:(int)index{ return textures[index]; } I used the answer from here, but program fell in runtime. How to fix this? Program is written on Objective-C and uses OpenGL ES.

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• On Turning 30&hellip;

  - by MOSSLover

  I know I am not a wise old sage like some people in the community.  I just turned 30 however I feel like all my years looking back have changed me.  My collective experiences and thoughts have given me a different perspective on life recently.  Seven months ago my head was in a gutter and since then a lot of things have happened.  I was always the weird kid in the corner reading Star Trek books.  When I was in elementary school I thought that kids would throw me birthday parties out of pity because I was the poor kid who everyone hated.  I am no longer that person.  I realized that during the worst possible period between my 29th and 30th year when I hit rock bottom.  You all know the insane story as I’ve told it two billion times over.  Honestly it was the best thing that ever happened to me in my life time, because many things would not have happened.  My friends came through for me at every given moment people from all over were checking up on me all over the world.  I fell and I landed on a bunch of people it was awesome.  I landed on family and friends who I thought I was never close enough to talk about these things.  They helped me realize I had a ton of unfulfilled dreams.  I got to move to New York City one of the greatest cities in the universe.  I got to do whatever I wanted without judgment from anyone.  I got to meet some great people at a few meetup groups in the past few months.  I got to meet an awesome person that I have been dating for 3 months.  I am trying to run for the 8 billionth time and keep up with it.  I got to go to Europe and next week for the first time New Orleans.  I got renewed for MVP for 2012.  I am grateful for all the people and things in my life.  I understand that sometimes when things seem bad you can always seek friends and family.  They will always help me.  I have to learn to lean on people sometimes just how they occasionally lean on me.  That is the biggest thing I have learned from the decade of 20 to 30.  I hope that 30 to 40 will be the best decade.  I hope that I can continue to grow.  I will catch you all later. Technorati Tags: Turning 30,Wisdom

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• 2D Barcode Addendum

  - by Tim Dexter

  Having finally got my external drive back(long story) today from Oklahoma (thank you so much Sammy) Im back with a full compliment of Oracle and blogging tools at my disposal. I have missed JDeveloper this past week, which I have found, I immensely prefer over Eclipse (let the flaming commence :0) I use Zoundry Raven for writing articles and its not installed locally but on my external drove, so I have been soldiering on with the blog server's pain in the backside UI for writing. Now I have my favority editor back and things are calming down workwise, I will start to get the Excel template posts out. Today thou, a note about 2D barcode support or more specifically any barcode that needs some data manipulation before the barcode font is applied. I wrote about these fonts a long time back and laid out the java class you would need to write if you had an algorithm from the font manufacturer to use. I missed out a valuable point and James at Luminex fell into the trap. He was wanting to use the datamatrix font from IDAutomation but and had built the java class to be called from the RTF template but it was not encoding or at least did not appear to be. New debugging feature to the rescue. Kan over at the bipconsultng blog documented the feature a while back. Just adding <?xdo-debug-level:'STATEMENT'?> to my test template generated all the debug files in my c:\temp directory. No messing with files, just a simple command ... at last! Kan has documented the feature here. With the log in hand I spotted a java error stack referencing a missing code128a method, huh? Looking at James' class he had the following snippet: ENCODERS.put("code128a",mUtility.getClass().getMethod("code128a",clazz)); ENCODERS.put("code128b",mUtility.getClass().getMethod("code128b", clazz)); ENCODERS.put("code128c",mUtility.getClass().getMethod("code128c", clazz)); ENCODERS.put("pdf417",mUtility.getClass().getMethod("pdf417", clazz)); ENCODERS.put("datamatrix",mUtility.getClass().getMethod("datamatrix", clazz)); His class did not include the other code128 and pdf147 methods and BIP was expecting them. An easy fix, just comment them out, rebuild and deploy and the encoding started working. If you are hitting similar problems, check that class and ensure all of the referenced methods are available, if not, delete or get commenting. James now has purdy labels popping out that his hard ware can read, sweet!

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• Rights Expiry Options in IRM 11g

  - by martin.abrahams

  Among the many enhancements in IRM 11g, we have introduced a couple of new rights expiry options that may be applied to any role. These options were supported in previous versions, but fell into the "advanced configuration" category. In 11g, the options can be applied simply by selecting a check-box in the properties of a role, as shown by the rather extreme example below, where the role allows access for just two minutes after they are sealed. The new options are: To define a role that expires automatically some period after it is assigned To define a role that evaluates expiry relative to the time that each document is sealed These options supplement the familiar options to allow open-ended access (limited by offline access and the ever-present option to revoke rights at any time) and the option to define time windows with specific start dates and end dates. The value of these options is easiest to illustrate with some publishing examples: You might define a role with a one year expiry to be assigned to users who purchase a one year subscription. For each individual user, the year would be calculated from the time that the role was assigned to them. You might define a role that allows documents to be accessed only for 24 hours from the time that they are published - perhaps as a preview mechanism designed to tempt users to sign up for a full subscription. Upon payment of a full fee, users can simply be reassigned a role that gives them greater access to exactly the same documents. In a corporate environment, you might use such roles for fixed term contractors or for workflows that involve information with a short lifespan, or perhaps as part of a compliance process that requires rights to be formally re-approved at intervals. Being role-based, the time constraints apply to any number of documents - including documents that have not yet been created. For example, a user with a one year subscription would have access to all documents published in the relevant classification during the year without any further configuration. Crucially, unlike other solutions, it is not the documents that expire, but the rights of particular users. Whereas some solutions make documents completely inaccessible for all users after expiry, Oracle IRM can allow some users to continue using documents while other users lose access. Equally crucially, a user whose rights have expired can always be granted fresh rights at any time - for example, because they renew their subscription or because a manager confirms that they still need the rights as part of a corporate compliance process. By applying expiry to rights rather than to documents, Oracle IRM avoids the risk of locking an organization out of its own information.

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• AIIM, Oracle and Keste - Talking Social Business in LA

  - by Brian Dirking

  We had a great event today in Los Angeles - AIIM, Oracle and Keste presented on how organizations are making social business work. Atle Skjekkeland of AIIM presented How Social Business Is Driving Innovation. Atle talked about a number of fascinating points, such as how answers to questions come from unexpected sources. Atle cited the fact that 38% of organizations get half or more of answers from unexpected sources, which speaks to the wisdom of the crowds and how people are benefiting from open communications tools to get answers to their questions. He also had a number of hilarious examples of companies that don't get it. If Comcast were to go to YouTube and search Comcast, they would see the number one hit after their paid ad is a video of one of their technicians asleep on a customer's couch. Seems when he called the office for support he was put on hold so long he fell asleep. Dan O'Leary and Atle Skjekkeland After Atle's presentation I presented on Solving the Innovation Challenge with Oracle WebCenter. Atle had talked about McKinsey's research titled The Rise Of The Networked Enterprise: Web 2.0 Finds Its Payday. I brought in some new McKinsey research that built on that article. The new article is How Social Technologies Are Extending The Organization. A survey of 4,200 Global Executives brought three conclusions for the future: Boundaries among employees, vendors and customers will blur Employee teams will self-organize Data-driven decisions will rise These three items were themes that repeated through the day as we went through examples of what customers are doing today.  Next up was Vince Casarez of Keste. Vince was scheduled to profile one customer, but in an incredible 3 for 1 deal, Vince profiled Alcatel-Lucent, Qualcomm, and NetApp. Each of these implementations had content consolidation elements, as well as user engagement requirements that Keste was able to address with Oracle WebCenter. Vince Casarez of Keste And we had a couple of good tweets worth reprinting here. danieloleary Daniel O'Leary Learning about user engagement and social platforms from @bdirking #AIIM LA and @oracle event pic.twitter.com/1aNcLEUs danieloleary Daniel O'Leary Users want to be able to share data and activity streams, work at organizations that embrace social via @bdirking skjekkeland Atle Skjekkeland RT @danieloleary: Learning about user engagement and social platforms from @bdirking #AIIM LA and @oracle event pic.twitter.com/EWRYpvJa danieloleary Daniel O'Leary Thanks again to @bdirking for an amazing event in LA today, really impressed with the completeness of web center JimLundy Jim Lundy @ @danieloleary @bdirking yes, it is looking good - Web Center shadrachwhite Shadrach White @ @bdirking @heybenito I heard the #AIIM event in LA was a hit We had some great conversations through they day, many thanks to everyone who joined in. We look forward to continuing the conversation - thanks again to everyone who attended!

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• Azure Service Bus - Authorization failure

  - by Michael Stephenson

  I fell into this trap earlier in the week with a mistake I made when configuring a service to send and listen on the azure service bus and I thought it would be worth a little note for future reference as I didnt find anything online about it.  After configuring everything when I ran my code sample I was getting the below error. WebHost failed to process a request.Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/28316044Exception: System.ServiceModel.ServiceActivationException: The service '/-------/BrokeredMessageService.svc' cannot be activated due to an exception during compilation.  The exception message is: Generic: There was an authorization failure. Make sure you have specified the correct SharedSecret, SimpleWebToken or Saml transport client credentials.. ---> Microsoft.ServiceBus.AuthorizationFailedException: Generic: There was an authorization failure. Make sure you have specified the correct SharedSecret, SimpleWebToken or Saml transport client credentials.   at Microsoft.ServiceBus.RelayedOnewayTcpClient.ConnectRequestReplyContext.Send(Message message, TimeSpan timeout, IDuplexChannel& channel)   at Microsoft.ServiceBus.RelayedOnewayTcpListener.RelayedOnewayTcpListenerClient.Connect(TimeSpan timeout)   at Microsoft.ServiceBus.RelayedOnewayTcpClient.EnsureConnected(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.CommunicationObject.Open(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.RefcountedCommunicationObject.Open(TimeSpan timeout)   at Microsoft.ServiceBus.RelayedOnewayChannelListener.OnOpen(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.CommunicationObject.Open(TimeSpan timeout)   at System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)   at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)   at Microsoft.ServiceBus.SocketConnectionTransportManager.OnOpen(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.TransportManager.Open(TimeSpan timeout, TransportChannelListener channelListener)   at Microsoft.ServiceBus.Channels.TransportManagerContainer.Open(TimeSpan timeout, SelectTransportManagersCallback selectTransportManagerCallback)   at Microsoft.ServiceBus.SocketConnectionChannelListener`2.OnOpen(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.CommunicationObject.Open(TimeSpan timeout)   at Microsoft.ServiceBus.Channels.CommunicationObject.Open(TimeSpan timeout)   at System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)   at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)   --- End of inner exception stack trace ---   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)   at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)Process Name: w3wpProcess ID: 8056As recommended by the error message I checked everything about the application configuration and also the keys and eventually I found the problem.When I set the permissions in the ACS rule group I had copied and pasted the claim name for net.windows.servicebus.action from the Azure portal and hadnt spotted the <space> character on the end of it like you sometimes pick up when copying text in the browser.  This meant that the listen and send permissions were not setup correctly which is why (as you would expect) my two applications could not connect to the service bus.So lesson learnt here, if you do copy and paste into the ACS rules just be careful you dont leave a space on the end of anything otherwise it will be difficult to spot that its configured incorrectly

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• Memories about Tadeusz Golonka

  - by Damian

  Today at 10:55 AM, Tadeusz Golonka - my greatest  Mentor and Teacher  passed away. I had te opportunity to met Tadek in person several times last years. It was always a great experience to see how he shared his energy and passion. I was always impressed and had a lot of new ideas after such meeting or lecture. I can remember the meeting  in early 2009 and his briliant speech he did for us, the MVP community in Poland. We spent two days together and he talked to us all the time. He gave us examples how to share IT passion to other people and how to be better person for others. He was the greates Mentor I have ever met - I realized this during that meeting. My greates dream was and still is to be "like Tadek". Many Times I just went to events to see / hear him on stage ("in action"). I always wanted to have his energy, empathy and passion. Now I have to live without his good words and advices....Let me put here the words that Adam Cogan wrote on Tadek's profile on Facebook. I just can't write about that fatal accident. "The circumstances of Tadeusz Golonka death are too tragic. Tad stood up to offer his seat to an elderly lady, he lost his balance and then he slipped and hit the tram door hard. He then fell out of the tram and hit the metal barriers that separate the tram rails from the street. It was a severe accident...... So horrible.  At first it was a miracle is that he survived... he fought for several days.  My thoughts are with his lovely family. The family have asked for blood donations as a symbolic gift. Tad received a lot of blood.  Thank you Tad, you were a wonderful person. I will remember you as a kind man, a gentleman. "RIP Tadeusz- You will never ever be forgotten. You are with us all the time  

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• PASS Summit for SQL Starters

  - by Davide Mauri

  I’ve received a buch of emails from PASS Summit “First Timers” that are also somehow new to SQL Server (for “somehow” I mean people with less than 6 month experience but with some basic knowledge of SQL Server engine) or are catching up from SQL Server 2000. The common question regards the session one should not miss to have a broad view of the entire SQL Server platform have some insight into some specific areas of SQL Server Given that I’m on (semi-)vacantion and that I have more free time (not true, I have to prepare slides & demos for several conferences, PASS Summit  - Building the Agile Data Warehouse with SQL Server 2012 - and PASS 24H - Agile Data Warehousing with SQL Server 2012 - among them…but let’s pretend it to be true), I’ve decided to make a post to answer to this common questions. Of course this is my personal point of view and given the fact that the number and quality of session that will be delivered at PASS Summit is so high that is very difficoult to make a choice, fell free to jump into the discussion and leave your feedback or – even better – answer with another post. I’m sure it will be very helpful to all the SQL Server beginners out there. I’ve imposed to myself to choose 6 session at maximum for each Track. Why 6? Because it’s the maximum number of session you can follow in one day, and given that all the session will be on the Summit DVD, they are the answer to the following question: “If I have one day to spend in training, which session I should watch?”. Of course a Summit is not like a Course so a lot of very basics concept of well-established technologies won’t be found here. Analysis Services, Integration Services, MDX are not part of the Summit this time (at least for the basic part of them). Enough with that, let’s start with the session list ideal to have a good Overview of all the SQL Server Platform: Geospatial Data Types in SQL Server 2012 Inside Unstructured Data: SQL Server 2012 FileTable and Semantic Search XQuery and XML in SQL Server: Common Problems and Best Practice Solutions Microsoft's Big Play for Big Data Dashboards: When to Choose Which MSBI Tool Microsoft BI End-User Tools 360° for what concern Database Development, I recommend the following sessions Understanding Transaction Isolation Levels What to Look for in Execution Plans Improve Query Performance by Fixing Bad Parameter Sniffing A Window into Your Data: Using SQL Window Functions Practical Uses and Optimization of New T-SQL Features in SQL Server 2012 Taking MERGE Beyond the Basics For Business Intelligence Information Delivery Analyzing SSAS Data with Excel Building Compelling Power View Reports Managed Self-Service BI PowerPivot 101  SharePoint for Business Intelligence The Best Microsoft BI Tools You've Never Heard Of and for Business Intelligence Architecture & Development BI Power Hour Building a Tabular Model Database Enterprise Information Management: Bringing Together SSIS, DQS, and MDS SSIS Design Patterns Storing Columnstore Indexes Hadoop and Its Ecosystem Components in Action Beside the listed sessions, First Timers should also take a look the the page PASS set up for them: http://www.sqlpass.org/summit/2012/Connect/FirstTimers.aspx See you at PASS Summit!

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• Oracle Open World - the technologist's fall classic

  - by user581320

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} Well its September and the calendar is charging towards fall. I realized today that another summer had passed as the first rain in months fell here in northern California redwood country. If its fall that means that Oracle Open World is right around the corner and that tens of thousands of technology professionals will soon converge on San Francisco to fill every hotel and every corner of their minds. As in years past, team UPK will be there in force to answer questions, demo and discuss all things UPK. On Thursday, October 4, from 12:45pm to 1:45pm I along with several of my UPK teammates will be manning the User Productivity Kit Panel - Best Practices to Manage and Deploy Content. This session is an interactive session intended as an opportunity to get your UPK questions answered. To get things started we will answer some questions submitted in advance. If you have any questions or subject areas you’d like addressed during the session, let me know here in the blog and then come to the session and we’ll do our best to answer your questions.  Peter Maravelias UPK Product Management

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• Response: Agile's Second Chasm

  - by Malcolm Anderson

  William Pietri over at Agile Focus has written an interesting article entitled, "Agile’s Second Chasm (and how we fell in)" in which he talks about how agile development has fallen into a common trap where large companies are now spending a lot of money hiring agile (Scrum) consultants just so that they can say they are agile, but all the while avoiding any change that is required by Scrum.   It echoes the questions that I've been asking for a while, "Can a fortune 500 company actually do agile development?"  I'm starting to think that the answer is "usually not"   William ask 3 questions at the end of his article that I will answer here.   1) Have I seen agile development brought in and then preemptively customized (read: made into ScrummerFall)?   Yes, Scrum is hard and disruptive.  It's a spotlight on company dysfunction.  In a low trust environment like most fortune 500 companies Scrum will be subverted by anyone who has ever seen "transparency" translate into someone being laid off.   2) If I had to do it all over again, would I change anything?  No, this is a natural progression, but the agile principles are powerful enough, that the companies that don't adopt them will no longer be competitive and will start to fail.   3) Is this situation solvable?  I think it is.  I think that one of the issues is that you often see companies implementing Scrum, but avoiding the agile engineering practices.  I believe that you cannot do one without the other.  Scrum keeps the ship sailing in smooth deep waters.  The agile engineering practices keep the engine running smoothly and cleanly.  If you implement agile engineering practices without Scrum, you run the risk of ending up with a great running piece of software that is useful to no one.  On the other hand, implementing cargo-cult Scrum without the agile engineering practices and you end up (especially in a fortune 500 company) being steered in the right direction, but with your development practices coming to a dead halt because you have code that can not keep up with the changes in requirements.   If you are trying to do Scrum, make sure that you hire some agile engineering coaches, or else you may find your deveolpment engines grinding to a dead halt in the middle of the open ocean.

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• IPCop server slows down download speed

  - by noocyte

  I have an IPCop server running at home, been doing just fine for ~5 months, but last week I suddenly started getting time-outs and slow downloads from the 'net. I first thought that this was my ISP acting up, then I thought it might be one of my 3 switches or some of my cabling. In due order I've tested everything above and found them all to be working as they should. The only factor remaining is my IPCop server. Facts: I've got a 15/15 Mbit line (fiber) and I get ~15 Mbit upload, but only 0.5 Mbit download with the IPCop box as router (ISP router set in bridge mode). If I connect without the IPCop box (using the ISP router) I get ~12 Mbit upload and ~15 Mbit download. The load on the IPCop box appears to be light and it used to handle this traffic just fine 2 weeks ago. The memory usage is ~60%, I tried to restart it and test again, the memory fell to ~50% then (5 months of uptime). I'm thinking that one of my nics are busted, but I'm sort of perplexed that this could be the outcome; slow download but full speed upload. Anybody ever seen that happening before? Could it just be one of the nics that needs to be replaced? Will try that as soon as I can get my hands on a couple of new ones.

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• Why does my computer crash randomly?

  - by Donavon Decker

  The other day I went out to my van to get my Tower and when I opened the trunk it fell out. I brought it into the house and opened it, and everything looked ok. When I started it up, about 1-3 minutes afterwards it would crash. It did this over and over until I reseated the cooler. Everything seemed normal again, until after about 10 minutes of gameplay (any game), it would crash. I reseated my GPU + reinstalled the drivers, however I still get the same error. A while back, I'd check my 'Windows Rating' periodically, and all of them were in the '6.0-6.9' range except for my hard disk usage (always been like that [not relative]). Today I went in and looked, and my Processor and Memory was rated 5.4. I reseated my cpu and my memory, refreshed the windows rating, and then my processor and memory went from 5.4, to 5.1. A few minutes ago I reseated them once again, and now it's back to 5.4. Note: Not sure if this is relevant to the issue, but I updated my bios earlier today I honestly have no idea what the issue is, but I'm getting aggravated at the problem. Here are some images which contain images of my specifications: i1271.photobucket.com/albums/jj623/donxdeck/1_zps09f0607c.jpg i1271.photobucket.com/albums/jj623/donxdeck/4_zps381cd00a.jpg i1271.photobucket.com/albums/jj623/donxdeck/3_zps54bba720.jpg i1271.photobucket.com/albums/jj623/donxdeck/2_zps945d3d72.jpg Thanks for the help

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• Setting a time limit for a transaction in MySQL/InnoDB

  - by Trevor Burnham

  This sprang from this related question, where I wanted to know how to force two transactions to occur sequentially in a trivial case (where both are operating on only a single row). I got an answer—use SELECT ... FOR UPDATE as the first line of both transactions—but this leads to a problem: If the first transaction is never committed or rolled back, then the second transaction will be blocked indefinitely. The innodb_lock_wait_timeout variable sets the number of seconds after which the client trying to make the second transaction would be told "Sorry, try again"... but as far as I can tell, they'd be trying again until the next server reboot. So: Surely there must be a way to force a ROLLBACK if a transaction is taking forever? Must I resort to using a daemon to kill such transactions, and if so, what would such a daemon look like? If a connection is killed by wait_timeout or interactive_timeout mid-transaction, is the transaction rolled back? Is there a way to test this from the console? Clarification: innodb_lock_wait_timeout sets the number of seconds that a transaction will wait for a lock to be released before giving up; what I want is a way of forcing a lock to be released. Update: Here's a simple example that demonstrates why innodb_lock_wait_timeout is not sufficient to ensure that the second transaction is not blocked by the first: START TRANSACTION; SELECT SLEEP(55); COMMIT; With the default setting of innodb_lock_wait_timeout = 50, this transaction completes without errors after 55 seconds. And if you add an UPDATE before the SLEEP line, then initiate a second transaction from another client that tries to SELECT ... FOR UPDATE the same row, it's the second transaction that times out, not the one that fell asleep. What I'm looking for is a way to force an end to this transaction's restful slumber.

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• Kerberos service on win2k dc will not start following disk failure

  - by iwilson68

  Hi, I have a win2k (mixed mode domain) with 4 DCS. One of these also acts an exchange 2000 server which uses 2 logical volumes from an MSA 2000 array. AD etc is stored on local drives. We experienced a problem last week when the raid array fell back to a redundant controller and this temporarily meant that the two logical drives were not visible to the server for around 5 minutes and a couple of reboots. The log records these Events as Type: Warning Event Source: Disk Event Category: None Event ID: 51 Date: 06/11/2009 Time: 11:46:23 User: N/A Computer: server1 Description: An error was detected on device \Device\Harddisk1\DR1 during a paging operation. Following these problems, the server “kerberos Key Distribution” service refuses to start with an “error.31 a device attached to the system is not functioning”. All other automatic start services (including net logon) are running and there are no DNS issues etc. All devices are also functioning but the two logical MSA disks are now numbered in the Windows Disk Management MMC as 2 and 4 and I suspect that they may have previously been identified as disks 1 & 2 and perhaps windows still sees this as an ongoing failure?? Replication has not been affected but obviously there are many audit failures in the security log relating to users and workstations presumably linked to the Kerberos issue. Attempting to manually start the kerberos service generates the following in the System Log. Event Type: Error Event Source: Service Control Manager Event Category: None Event ID: 7023 Date: 09/11/2009 Time: 09:46:55 User: N/A Computer: Server1 Description: The Kerberos Key Distribution Center service terminated with the following error: A device attached to the system is not functioning. DCDIAG passes all tests except “Advertising” and “Services” which I believe relate directly to the failure of Kerberos only. Any advice would be appreciated.

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• How to sync two computers using new MobileMe calendar

  - by CesarGon

  I have been using MobileMe for over a year with success. I use it to sync my Outlook calendars in my work and home computers, using Windows 7 and Outlook 2007. The main Outlook calendar folder in my work computer is replicated to MobileMe as "Work", and synced to my home computer, and the main calendar folder in my home computer is replicated to MobileMe as "Home", and synced to my work computer. This means that I can see both "Work" and "Home" calendars from both computers (as well as from the web interface through me.com), which is very convenient. Yesterday I migrated to the new MobileMe calendar, accepting the suggestion that popped up on the me.com website. After the migration, the MobileMe control panel on each of Windows computers asked me to re-configure my calendar setup, and everything fell apart. The "Home" and "Work" calendar folders in Outlook are now ignored by MobileMe, and new ones named "Home in MobileMe" and "Work in MobileMe" have been created, and placed in a separate Outlook data file rather than the default. This means that now: I now have four folders, two of which are not replicated to MobileMe The two folders that are not replicated reside on a separate data file, so alarms and reminders don't work; they're basically useless to me as calendar folders In addition, the button in the MobileMe Control Panel that used to let me specify what MobileMe folder should be synced against the default Outlook folder has gone. MobileMe is now too smart. Do you have any idea how to undo this mess and go back to a situation where I have two folders, as described in the top paragraph, which keep synced? I don't want an extra data file. Thanks.

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• Constant beeping

  - by Bogi Juul Peterson

  My computer has a problem with beeping. I'll first tell you how it started: One night I decided to watch a cartoon, and I took some water and food with me to eat while I watch. I fell asleep and when I woke up I had spilled water all over my keyboard. I didn't react quickly, because it went unnoticed for about 1 and a half hours. When I noticed, I quickly put my laptop on a radiator to try to dry it. When I turned the computer on there was a constant beeping sound. I didn't know what caused it, and I'm still not sure, but I think it has something to do with the USB hub. If I let the computer stand for some hours without any USB connections, it's fine, but when I put any kind of USB device in, it starts beeping. The laptop keyboard doesn't work so I have to have some kind of USB device connected to use the computer. The beeping is going on while I'm writing this and it makes my computer lag so much that it can make delays from the keyboard be from 1 second to 10 seconds. I need this computer because I don't have the money to buy a new one, and I have to use this computer for homework and games. The beeping is constant, with less than a second between beeps. If anyone has a solution, please help.

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• DRBD Replication failure

  - by user62513

  A couple of weeks ago I setup a 2 nodes CRM system with one of the resources managed being MySQL over DRBD. Today for maintenance reasons I restarted both nodes but now they can't connect to each other anymore. DRBD fell out of sync and I followed this guide to get it back connected but it's only able to run successfully on one node. But this strange thing happens: If I crm node standby both nodes and I try: crm node online node0 before crm node online node1, all the CRM resources start successfully but the DRBD partitions are still running in StandAlone state. crm node online node1 beofre crm node online node0, the DRBD resource fails to start, thus causing mysql not to start. If I standby both resources and call crm node online node0 then it times out and prints this error: Running crm node online node0 produces this output after timing out Error setting standby=off (section=nodes, set=<null>): Remote node did not respond Error performing operation: Remote node did not respond Is there anything I'm doing wrong here? An alternative will be just do MySQL replication but I'm not sure how to promote a slave to master when the master database is not available.

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• Prevent Amazon EC2 Time zone from reverting back on yum update

  - by D.Tate

  I use an Amazon EC2 server instance that runs a distro called Amazon Linux AMI. (I've read that it is based on CentOS/Red Hat). My specific version is the 2012.09 release. Anyway, I was able to change the time zone about a week ago from the default UTC to America/New_York (which is EST/EDT). The command I used to change it was: ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime ...thanks to this other Server Fault question. At that point, I was able to run date from the the command line, and it correctly displayed the EDT time. And even after EDT "fell back" to EST this past Sunday, I was pleased to find that running date still produced the correct local time. So that was great. However, after running a yum update yesterday, it seems that my time zone got reverted back to plain 'ol UTC. I even checked the last modified time of /etc/localtime file, and indeed it confirmed that it had been modified around the same time I had updated. Is there any way to prevent this from happening again, or will I be stuck resetting the time zone every time I do a yum update?

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• Windows desktop virutalization instead of replacing work stations

  - by Chris Marisic

  I'm head of the IT department at the small business I work for, however I am primarily a software architect and all of my system administration experience and knowledge is ancillary to software development. At some point this year or next we will be looking at upgrading our workstation environment to a uniform Windows 7 / Office 2010 environment as opposed to the hodge podge collection of various OEM licensed editions of software that are on each different machine. It occurred to me that it is probably possible to forgo upgrading each workstation and instead have it be a dumb terminal to access a virutalization server and have their entire virtual workstation hosted on the server. Now I know basically anything is possible but is this a feasible solution for a small business (25-50 work stations)? Assuming that this is feasible, what type of rough guidelines exist for calculating the required server resources needed for this. How exactly do solutions handle a user accessing their VM, do they log on normally to their physical workstation and then use remote desktop to access their VM, or is it usually done with a client piece of software to negotiate this? What types of software available for administering and monitoring these VM's, can this functionality be achieved out of box with Microsoft Server 2008? I'm mostly interested in these questions relating to Server 2008 with Hyper-V but fell free to offer insight with VMware's product line up, especially if there's any compelling reasons to choose them over Hyper-V in a Microsoft shop. Edit: Just to add some more information on implementation goals would be to upgrade our platform from a Win2k3 / XP environment to a full Windows 2008 / Win7 platform without having to perform any of that associated work with our each differently configured workstation. Also could anyone offer any realistic guidelines for how big of hardware is needed to support 25-50 workstations virtually? The majority the workstations do nothing except Office, Outlook and web. The only high demand workstations are the development workstations which would keep everything local.

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• mod_fcgi in virtualmin: graceful kill fail, sending SIGKILL?

  - by mgjk

  Yesterday around 1am, our server ground to a crawl. This doesn't happen often, but I'm trying to get to the bottom of it. There is no unusual traffic volume, no unusual processes running, just all of the sudden the server started killing fcgid processes. [Thu Aug 02 01:17:32 2012] [warn] mod_fcgid: process 26460 graceful kill fail, sending SIGKILL ... for as many fcgid processes as we have... CPU idle fell to 0% and I/O seemed to take up most of the load. The issue lasted about 5 minutes. I suspect there was some swap activity, although I'm not sure if it was due to killed processes being swapped in to die, or if it was because some process ramped up memory usage faster than my process watching scripts can see them. The oom-killer wasn't triggered (at least it's not logged), so I think this was Apache for some reason restarting the processes. This is not regular, and nothing obvious appears in cron. Is there a normal Apache process which might cause this? We run dozens of different sites, and it was late at night, so volume was very, very low. (maybe 200 requests in a 10 minute period).

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• What does opening a serial port do?

  - by reve_etrange

  What does opening the standard PC serial port do, in electrical terms (i.e. what voltages on which pins)? For example, the ancient VB6 program which controls an apparatus I am tasked with maintaining toggles .PortOpen to control some TTL. The connection only used 2 pins (bad solders fell apart), so which pins do I solder to? The only labels / documentation refer to pins 7 and 9, saying 0V and 5V parenthetically, but does .PortOpen really just put 5V between RI and RTS?. As a post script, this isn't the weirdest thing about the set up. The TTL I referred to above also connects to an instrument via a BNC to DB9 (!), with only 1 pin used. I guess there was an assumption about a common ground, since the BNC shielding isn't connected to the GND pin? The connection is to the instrument's 'foot pedal' pin, it was a way to remotely trigger the device. Update According to this page, the DTR and RTS pins can go high when the port is opened. If they were so configured, they will subsequently go low when the port is closed. If DTR and RTS are not enabled, opening the port should set both to low (and keep them low).

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• Can I regenerate the rsa key for SSH access to a Cisco router? Or should I completely erase the SSH config?

  - by Josh

  I have a production 2691 that I administer via telnet. I'd like to change that to SSH. Looking at the config, it looks like there have been keys generated in the past. I think the history here is SSH was set up, they had issues connecting, and fell back to telnet. There are a number of crypto entries, including the following: crypto pki trustpoint Gateway-2691.xxx.com enrollment selfsigned subject-name cn=IOS-Gateway-2691.xxx.com revocation-check none rsakeypair Gateway-2691.xxx.com I've also got this going... Gateway-2691#sh ip ssh SSH Disabled - version 1.99 %Please create RSA keys (of atleast 768 bits size) to enable SSH v2. Authentication timeout: 120 secs; Authentication retries: 3 Gateway-2691# My question is simply, can I run crypto key generate rsa again to set it up again? Is there a way to negate or no all of the previous ssh config so that I can start fresh there? I may be asking the wrong questions, as I'm learning here. As for the SSH how-to, I'm sure I can find information in many places. I'm just basically wondering if I need to start fresh, or if I can pick up where the last attempt at SSH config left off.

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• Wires from fan on side panel - where do they connect?

  - by Mick

  The side panel of my desktop PC has a small fan built in. There were two wires, one red one black that connected inside the PC. Unfortunately I had the bolts removed and the side door fell off ripping the cables such that the main length of cable remains attached to the fan. So there must be two short stubs of broken cable somewhere - but I can't find them! Any ideas where I should look? I can't see anything on the motherboard. the PC is running perfectly well - but I now have the side open to make sure the air can circulate. EDIT: The motherboard appears to be an "Asus P6T SE" EDIT: The manual shows the location of two "chassis fan" connectors. One is being used by a big chassis fan on the back face of the PC (underneath the pwer supply). The other appears to be unused - there is no stub of a connector with wires - its just the bare pins sticking directly out of the motherboard. There is also an unused "pwr_fan" connector. Would it be ok to simply connect the black and red wires from the fan to the black and red parts of a molex adapter?

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