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• Are certain open-source licenses more suitable than others for career growth?

  - by Francisco Garcia

  As a software engineer/programmer myself, I love the possibility to download the code and learn from it. However building software is what brings food to my table. I have doubts regarding the type of license I should use for my own personal projects or when picking up one project to learn from. There are already many questions about licenses on Stackoverflow, but I would like to make this one much more specific. If your main profession and way of living is building software: which type of license do you find more useful for you? And I mean, the license that can benefit you most as a professional because it gives you more freedom to reuse the experience you gain. GPL is a great license to build communities because it forces you to give back your work. However I like BSD licenses because of their extra freedom. I know that if the code I am exploring is BSD licensed, I might be able to expand not only my skills, but also my programmer toolbox. Whenever I am working for a company, I might recall that something similar was done in another project and I will be able to copy or imitate certain part of the code. I know that there are religious wars regarding GPL vs BSD and it is not my intention to start one. Probably many companies already take snipsets from GPL projects anyway. I just want to insist in the factor of professional enrichment. I do not intend to discriminate any license. I said I prefer BSD licenses but I also use Linux because the user base is bigger and also the market demand.

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• How difficult is it for an old-school programmer to pick up an FPGA kit and make something useful wi

  - by JUST MY correct OPINION

  I'm an old, old, old coder. (How old? I've used paper tape in anger.) I've programmed in a lot of languages and under a lot of paradigms (spaghetti, structured, object-oriented, functional and a smattering of logical). I'm getting bored. FPGAs look interesting to me. I have the crazy notion of resurrecting some of the ancient hardware I worked on in the days using FPGAs. I know this can be done because I've seen PDP-10 and PDP-11 implementations in FPGAs. I'd like to do the same for a few machines that are perhaps not as popular as those two, however. While I am an old, old coder, what I am not is an electronics or computer systems engineer. I'll be learning from scratch if I go down this path. My question, therefore, is two-fold: How difficult will it be for this old dinosaur to pick up and learn FPGAs to the point that interesting (not necessarily practical -- more from a hobbyist perspective) projects can be made? What should I start with learning-wise to go down this path? I know where to get FPGA kits, but I haven't found anything like "FPGAs for Complete Dinosaurs" yet anywhere out there.

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• How I May Have Taken A Wrong Path in Programming

  - by Ygam

  I am in a major stump right now. I am a BSIT graduate, but I only started actual programming less than a year ago. I observed that I have the following attitude in programming: I tend to be more of a purist, scorning unelegant approaches to solving problems using code I tend to look at anything in a large scale, planning everything before I start coding, either in simple flowcharts or complex UML charts I have a really strong impulse on refactoring my code, even if I miss deadlines or prolong development times I am obsessed with good directory structures, file naming conventions, class, method, and variable naming conventions I tend to always want to study something new, even, as I said, at the cost of missing deadlines I tend to see software development as something to engineer, to architect; that is, seeing how things relate to each other and how blocks of code can interact (I am a huge fan of loose coupling) i.e the OOP thinking I tend to combine OOP and procedural coding whenever I see fit I want my code to execute fast (thus the elegant approaches and refactoring) This bothers me because I see my colleagues doing much better the other way around (aside from the fact that they started programming since our first year in college). By the other way around I mean, they fire up coding, gets the job done much faster because they don't have to really look at how clean their codes are or how elegant their algorithms are, they don't bother with OOP however big their projects are, they mostly use web APIs, piece them together and voila! Working code! CLients are happy, they get paid fast, at the expense of a really unmaintainable or hard-to-read code that lacks structure and conventions, or slow executions of certain actions (which the common reasoning against would be that internet connections are much faster these days, hardware is more powerful). The excuse I often receive is clients don't care about how you write the code, but they do care about how long you deliver it. If it works then all is good. Now, did my "purist" approach to programming may have been the wrong way to start programming? Should I just dump these purist concepts and just code the hell up because I have seen it: clients don't really care how beautifully coded it is?

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• Compromising design & code quality to integrate with existing modules

  - by filip-fku

  Greetings! I inherited a C#.NET application I have been extending and improving for a while now. Overall it was obviously a rush-job (or whoever wrote it was seemingly less competent than myself). The app pulls some data from an embedded device & displays and manipulates it. At the core is a communications thread in the main application form which executes a 600+ lines of code method which calls functions all over the place, implementing a state machine - lots of if-state-then-do type code. Interaction with the device is done by setting the state/mode globally and letting the thread do it's thing. (This is just one example of the badness of the code - overall it is not very OO-like, it reminds of the style of embedded C code the device firmware is written in). My problem is that this piece of code is central to the application. The software, communications protocol or device firmware are not documented at all. Obviously to carry on with my work I have to interact with this code. What I would like some guidance on, is whether it is worth scrapping this code & trying to piece together something more reasonable from the information I can reverse engineer? I can't decide! The reason I don't want to refactor is because the code already works, and changing it will surely be a long, laborious and unpleasant task. On the flip side, not refactoring means I have to sometimes compromise the design of other modules so that I may call my code from this state machine! I've heard of "If it ain't broke don't fix it!", so I am wondering if it should apply when "it" is influencing the design of future code! Any advice would be appreciated! Thanks!

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• Screenscraping and reverse engineering health based web tool

  - by ArbInv

  Hi There is a publicly available free tool which has been built to help people understand the impact of various risk factors on their health / life expectancy. I am interested in understanding the data that sits behind the tool. To get this out it would require putting in a range of different socio-demographic factors and analyzing the resulting outputs. This would need to be done across many thousand different individual profiles. The tool was probably built on some standard BI platorm. I have no interest in how the tool was built but do want to get to the data within it. The site has a Terms of Use Agreement which includes: Not copying, distribute, adapt, create derivative works of, translate, or otherwise modify the said tool Not decompile, disassemble, reverse assemble, or otherwise reverse engineer the tool. The said institution retains all rights, title and interest in and to the Tool, and any and all modifications thereof, including all copyright, copyright registrations, trade secrets, trademarks, goodwill and confidential and proprietary information related thereto. Would i be in effect breaking the law if i were to point a screen scraping tool which downloaded the data that sits behind the tool in question?? Any advice welcomed? THANKS

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• How do C++ compilers actually pass reference parameters?

  - by T.E.D.

  This question came about as a result of some mixed-langauge programming. I had a Fortran routine I wanted to call from C++ code. Fortran passes all its parameters by reference (unless you tell it otherwise). So I thought I'd be clever (bad start right there) in my C++ code and define the Fortran routine something like this: extern "C" void FORTRAN_ROUTINE (unsigned & flag); This code worked for a while but (of course right when I needed to leave) suddenly started blowing up on a return call. Clear indication of a munged call stack. Another engineer came behind me and fixed the problem, declaring that the routine had to be deinfed in C++ as extern "C" void FORTRAN_ROUTINE (unsigned * flag); I'd accept that except for two things. One is that it seems rather counter-intuitive for the compiler to not pass reference parameters by reference, and I can find no documentation anywhere that says that. The other is that he changed a whole raft of other code in there at the same time, so it theoretically could have been another change that fixed whatever the issue was. So the question is, how does C++ actually pass reference parameters? Is it perhaps free to do copy-in, copy-out for small values or something? In other words, are reference parameters utterly useless in mixed-language programming? I'd like to know so I don't make this same code-killing mistake ever again.

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• Any guidelines for handling the Headset and Bluetooth AVRC transport controls in Android 2.2

  - by StefanK

  I am trying to figure out what is the correct (new) approach for handling the Intent.ACTION_MEDIA_BUTTON in Froyo. In pre 2.2 days we had to register a BroadcastReceiver (either permanently or at run-time) and the Media Button events would arrive, as long as no other application intercepts them and aborts the broadcast. Froyo seems to still somewhat support that model (at least for the wired headset), but it also introduces the registerMediaButtonEventReceiver, and unregisterMediaButtonEventReceiver methods that seem to control the "transport focus" between applications. During my experiments, using registerMediaButtonEventReceiver does cause both the bluetooth and the wired headset button presses to be routed to the application's broadcast receiver (the app gets the "transport focus"), but it looks like any change in the audio routing (for example unplugging the headset) shits the focus back to the default media player. What is the logic behind the implementation in Android 2.2? What is correct way to handle transport controls? Do we have to detect the change in the audio routing and try to re-gain the focus? This is an issue that any 3rd party media player on the Android platform has to deal with, so I hope that somebody (probably a Google Engineer) can provide some guidelines that we can all follow. Having a standard approach may make headset button controls a bit more predictable for the end users. Stefan

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• Should I go to school and get my degree in computer science?

  - by ryan

  I'll try and keep this short and simple. I've always enjoyed programming and I've been doing it since high school. Right after I graduated from high school (2002), I opted to skip college because I was offered a software engineer position. I quit after a couple of years later to team up on various startup companies. However, most of them did not launch as well as expected. But it honestly did not matter to me because I've learned so much from that experience. So fast forwarding to today, now turned 25, I need a job due to this tough economic climate. Looking on Craigslist, a lot of the listings require computer science degrees. It's evident now that programming is what I want to do because I seem to never get enough of it. But just the thought of having to push 2 years without attending any real computer class for an Associates at age 25 is very, very discouraging. And the thought of having to learn from basic (Hello WOOOOORRLLLD) just does not seem exciting. I guess I have 3 questions to wrap this up: Should I just suck it up and go back to school while working at McDonalds at age 25? Is there a way where I can just skip all the boring stuff and just get tested with what I know? From your experience, how many jobs use computer science degrees as prerequisites? Or am I screwed and better pray that my next startup will be the next big thing?

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• At what point is it worth using a database?

  - by radix07

  I have a question relating to databases and at what point is worth diving into one. I am primarily an embedded engineer, but I am writing an application using QT to interface with our controller. We are at an odd point where we have enough data that it would be feasible to implement a database (around 700+ items and growing) to manage everything, but I am not sure it is worth the time right now to deal with. I have no problems implementing the GUI with files generated from excel and parsed in, but it gets tedious and hard to track even with VBA scripts. I have been playing around with converting our data into something more manageable for the application side with Microsoft Access and that seems to be working well. If that works out I am only a step (or several) away from using an SQL database and using the QT library to access and modify it. I don't have much experience managing data at this level and am curious what may be the best way to approach this. So what are some of the real benefits of using a database if any in this case? I realize much of this can be very application specific, but some general ideas and suggestions on how to straddle the embedded/application programming line would be helpful. Thanks

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• Javascript Application Book

  - by Jormundir

  Can anyone recommend a good book on Javascript module/application development. I'm a Software Engineer, so I don't need all the intro to programming stuff. What I'm really looking for is: How do you bundle the html/css/javascript together so that you can make one include that will load the whole application. I.e.: <div id="myapplication"></div> ... ... <script src="myapplication.js"> Design patterns are always welcome. I've already read Javascript the good parts, and online guides, but it's hard to find a comprehensive guide/tutorial for specifically this. There's a lot of good "this is a javascript application" and "this is a scalable framework", but I haven't had any luck with "This is how you build a javascript application, including the html and css, and this is how you deliver it nicely". I'm building a small application to start, so I'm not interested in scalability and large-scale development practices, just a nice and comprehensive guide to get me off the ground.

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• sql to linq translated code

  - by ognjenb

  SQL: SELECT o.Id, o.OrderNumber, o.Date, d.Name AS 'Distributor', d.Notes AS 'DistrNotes', -- distributer c.Name AS 'Custoer', c.Notes AS 'CustmNotes', -- customer t.Name AS 'Transporter', -- transporter o.InvoiceFile, o.Notes, o.AwbFile, o.TrackingFile, o.Status, o.DeliveryNotification, o.ServiceType, o.ValidityDate, o.DeliveryTime, o.Weight, o.CustomerId, o.CustomerOrderNumber, o.CustomerDate, o.Shipment, o.Payment, o.TransporterId, o.TotalPrice, o.Discount, o.AlreadyPaid, o.Delivered, o.Received, o.OrderEnteredBy, CONCAT(e.Name, ' ', e.Surname) AS 'IBEKO Engineer', o.Confirmed FROM `order` o LEFT JOIN person d ON o.`DistributorId` = d.`Id` LEFT JOIN person c ON o.`CustomerId` = c.Id LEFT JOIN Transporter t ON o.`TransporterId` = t.Id LEFT JOIN IbekoEngineer e ON o.OrderEnteredBy = e.Id LINQ: testEntities6 ordersEntities = new testEntities6(); var orders_query = (from o in ordersEntities.order join pd in ordersEntities.person on o.DistributorId equals pd.Id join pc in ordersEntities.person on o.CustomerId equals pc.Id join t in ordersEntities.transporter on o.TransporterId equals t.Id select new OrdersModel { Id = o.Id, OrderNumber = o.OrderNumber, Date = o.Date, Distributor_Name = pdk.Name, Distributor_Notes = pdk.Notes, Customer_Name = pc.Name, Customer_Notes = pc.Notes, Transporter_Name = t.Name, InvoiceFile = o.InvoiceFile, Notes = o.Notes, AwbFile = o.AwbFile, TrackingFile = o.TrackingFile, Status = o.Status, DeliveryNotification = o.DeliveryNotification, ServiceType = o.ServiceType, ValidityDate = o.ValidityDate, DeliveryTime = o.DeliveryTime, Weight = o.Weight, CustomerId = o.CustomerId, CustomerOrderNumber = o.CustomerOrderNumber, CustomerDate = o.CustomerDate, Shipment = o.Shipment, Payment = o.Payment, TransporterId = o.TransporterId, TotalPrice = o.TotalPrice, Discount = o.Discount, AlreadyPaid = o.AlreadyPaid, Delivered = o.Delivered, Received = o.Received, OrderEnteredBy = o.OrderEnteredBy, Confirmed = o.Confirmed }); I translated the above SQL code into linq. SQL code return data from database but LINQ not return data. Why?

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• Why Does Wireless Gear Degrade Over Time?

  - by bahamat

  I saw this originally posted on slashdot, but their comment format is not conducive to actually getting a correct answer. Having directly experienced this phenomenon myself, I'm now asking here where I think I can actually get an educated answer. Here's the original question verbatim: Lately I have replaced several home wireless routers because the signal strength has been found to be degraded. These devices, when new (2+ years ago) would cover an entire house. Over the years, the strength seems to decrease to a point where it might only cover one or two rooms. Of the three that I have replaced for friends, I have not found a common brand, age, etc. It just seems that after time, the signal strength decreases. I know that routers are cheap and easy to replace but I'm curious what actually causes this. I would have assumed that the components would either work or not work; we would either have a full signal or have no signal. I am not an electrical engineer and I can't find the answer online so I'm reaching out to you. Can someone explain how a transmitter can slowly go bad? Common (incorrect, but repeated) answers from slashdot include: Back then your neighbors didn't have wifi, now they do. They drowning you out. I don't think this is likely because replacing the access point with a new one and using the same frequencies solves the problem. Older devices had low transmit power. Crank that baby. As mentioned by a FreeBSD wireless developer this violates regulations and can physically damage the equipment. It was also mentioned that higher power in one direction is not necessarily reciprocated. This shows higher bars, but not necessarily a better connection. Manufacturers make cheap crap designed to wear out. This one actually may be legitimate although it is overly broad. What specifically causes damage over time? Heat? Excessive power? So can anyone provide an informed answer on this? Is there any way to fix these older access points?

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• What are the pros and cons of AWS Elastic Beanstalk compared with other deployment strategies?

  - by James van Dyke

  I'm pretty new to the whole Netflix OSS stack and deployments in general. As a background for my current level of knowledge ops-wise, my main role is as a front-end application engineer. However, I enjoy the operations side of things, so I'm attempting to setup a new deployment strategy and the tooling for a new project. Our Goals Super easy deploys (we want to push a button to update production) Automated deploys to test environments (using Jenkins) Ease of maintenance (we have an app to write, don't want to spend our time fiddling with production issues) Ability to handle a service oriented architecture (many small apps, various languages and data stores) Enough flexibility to ensure we won't have to change strategies any time soon (we're already trying to get away from RightScale) We're OK with a little more initial setup time if doing so will save us some headaches in the future. So, along these lines, I've been listening to podcasts, watching Ops talks, and reading tons of blog posts and based on our goals and what I've taken to be some forming best practices, we've started forming a plan using Asgard, rolling our package into a jar and rolling that into an AMI. We had this all planned out and like the advantages the process versus using a Chef server and converging instances on the fly (we felt this was error prone given our limited timeline and lack of understanding around a Chef server workflow). However, a coworker did a little looking around on his own and felt like Elastic Beanstalk met our needs. I've looked into it and spun up a test environment with a WAR file and an attached RDS database. Things seem to work and I believe that we can automate deploys to a testing environment using Jenkins via the AWS API. Seems simple enough... perhaps too simple. What I'm wondering is, what's the catch? If Elastic Beanstalk is so simple and effective, why isn't it talked about more? I'm having a hard time finding enough objective opinions and facts about the two different deployment strategies, so I thought I'd ask around. Do you use Elastic Beanstalk? If so, why and what factors lead to that decision? What do you like and dislike? If you don't use Elastic Beanstalk but considered it, what do you use and why didn't you use Elastic Beanstalk? What are the advantages and disadvantages to a Elastic Beanstalk based deployment strategy for an SOA? That is, will Elastic Beanstalk work well with many small applications that rely on each other to work?

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• What other protocols must not be fire-walled for FTP to work?

  - by Chris

  my Netgear router randomly reset itself the other day loosing all of my config settings: DSL details, Firewall rules, the lot! So I set about restoring all of the details manually, but when it came to configuring the firewall I wanted improve the security by explicitly setting 'deny' rules for everything that I figured is 'non-essential', and (although not necessary) whilst I was at it I set explicit 'allow' for the 'essential' protocols. I'll admit now I didn't really know what I was doing and everything was just 'my best guess', but I enabled only DNS, HTTP, HTTPS, FTP, SFTP, TFTP with everything else blocked. This did not work for me as I could not access 99% of web sites (although strangely Google worked!), so I played around a bit more and found that (oddly) if I disabled just the explicit 'allow' rules then everything worked fine, for browsing anyway. Today I came to work on some web-sites via FTP and just could not get a consistent connection, it kept dropping out after a few files or being blocked by the server or simply not connecting. It would authenticate okay but then stop when retrieving the initial directory listing! e.g.: Status: Delaying connection for 1 second due to previously failed connection attempt... Status: Resolving address of ftp.domain.co.uk Status: Resolving address of ftp.domain.co.uk Status: Connecting to 123.123.123.123:21... Status: Connecting to 123.123.123.123:21... Status: Connection established, waiting for welcome message... Status: Connection established, waiting for welcome message... Response: 421 Too many connections (8) from this IP Error: Could not connect to server Status: Delaying connection for 5 seconds due to previously failed connection attempt... Response: 421 Too many connections (8) from this IP Error: Could not connect to server Status: Delaying connection for 5 seconds due to previously failed connection attempt... I've checked and re-checked the FTP settings (they worked before anyway), I have Googled the I.T. out of the various protocols that I have blocked in the fire-wall but none seem essential to FTP (other than FTP/SFTP etc. which I have passively enabled). I'm (clearly) no server engineer, or protocols / fire-wall expert so I was hoping that some one could maybe shed some light on why my FTP is failing. I've been wondering if I ought to be allowing BGP, BOOTP and/or IDENT (or any others)? What other protocols are required for FTP? Thanks in advance!

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• Legacy VB6 application under Win7 SQL error

  - by Shial

  We have a rather unfortunate legacy application at work, written originally in VB6 it predates anybody in our IT department by at least 5 years. We have a contracted developer for ongoing maintenance and where he can he rewrites sections over into .NET code (Not sure about his techniques here, this is a side job for his regular work as an IBM engineer) the application works fine (such as it is) under windows XP. We have only a couple of Windows 7 machines mainly for testing and this application seems to run into a wall. Things like the background not loading and SQL errors. This is even running under administrator. Running an SQL trace from the ODBC control panel shows several interesting things. It makes a connection to the database successfully initially where it runs a query to determine if it is running the correct version. This query works fine. 558-1af0 ENTER SQLExecDirectW HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 BMS 558-1af0 EXIT SQLExecDirectW with return code 1 (SQL_SUCCESS_WITH_INFO) HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 It then seems to drop its connection and can't find the ODBC connection despite the fact its connecting to the same DB. From the trace it looks like it configures the connection then it starts firing off SQLFreeStmt to unbind and close out then when in the application and it tries to do its thing there is no connection. 558-1af0 ENTER SQLFreeStmt HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> BMS 558-1af0 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS) HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> Then this happens when I try to do something that pulls data 558-1af0 ENTER SQLDriverConnectW HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> BMS 558-1af0 EXIT SQLDriverConnectW with return code -1 (SQL_ERROR) HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> DIAG [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) Nearly all of my searching on this issue comes up with programming issues where the connection string has a problem. The only thing that is different in this particular scenario though is Windows 7, I know the connection string is fine since it works on the XP machines. The VB components are supposed to be still functional under Win7. My computer is running 32 bit win7 and my VP is running Win7 64 bit and both have the same problem so that can be ruled out. I have already tried reinstalling the SQL Native Client and the VB runtime as well as the application in question. Hopefully I can find a solution and not have to resort to using the XP VM.

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• MongoDB and datasets that don't fit in RAM no matter how hard you shove

  - by sysadmin1138

  This is very system dependent, but chances are near certain we'll scale past some arbitrary cliff and get into Real Trouble. I'm curious what kind of rules-of-thumb exist for a good RAM to Disk-space ratio. We're planning our next round of systems, and need to make some choices regarding RAM, SSDs, and how much of each the new nodes will get. But now for some performance details! During normal workflow of a single project-run, MongoDB is hit with a very high percentage of writes (70-80%). Once the second stage of the processing pipeline hits, it's extremely high read as it needs to deduplicate records identified in the first half of processing. This is the workflow for which "keep your working set in RAM" is made for, and we're designing around that assumption. The entire dataset is continually hit with random queries from end-user derived sources; though the frequency is irregular, the size is usually pretty small (groups of 10 documents). Since this is user-facing, the replies need to be under the "bored-now" threshold of 3 seconds. This access pattern is much less likely to be in cache, so will be very likely to incur disk hits. A secondary processing workflow is high read of previous processing runs that may be days, weeks, or even months old, and is run infrequently but still needs to be zippy. Up to 100% of the documents in the previous processing run will be accessed. No amount of cache-warming can help with this, I suspect. Finished document sizes vary widely, but the median size is about 8K. The high-read portion of the normal project processing strongly suggests the use of Replicas to help distribute the Read traffic. I have read elsewhere that a 1:10 RAM-GB to HD-GB is a good rule-of-thumb for slow disks, As we are seriously considering using much faster SSDs, I'd like to know if there is a similar rule of thumb for fast disks. I know we're using Mongo in a way where cache-everything really isn't going to fly, which is why I'm looking at ways to engineer a system that can survive such usage. The entire dataset will likely be most of a TB within half a year and keep growing.

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• A single request appears to have come from all the browsers? Should I be worried?

  - by HorusKol

  I was looking over my site access logs when I noticed a request with the following user agent string: "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12\",\"Mozilla/5.0 (Windows; U; Windows NT 5.1; pl-PL; rv:1.8.1.24pre) Gecko/20100228 K-Meleon/1.5.4\",\"Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/540.0 (KHTML,like Gecko) Chrome/9.1.0.0 Safari/540.0\",\"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Comodo_Dragon/4.1.1.11 Chrome/4.1.249.1042 Safari/532.5\",\"Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.0.16) Gecko/2009122206 Firefox/3.0.16 Flock/2.5.6\",\"Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.1 (KHTML, like Gecko) Maxthon/3.0.8.2 Safari/533.1\",\"Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.8pre) Gecko/20070928 Firefox/2.0.0.7 Navigator/9.0RC1\",\"Opera/9.99 (Windows NT 5.1; U; pl) Presto/9.9.9\",\"Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-HK) AppleWebKit/533.18.1 (KHTML, like Gecko) Version/5.0.2 Safari/533.18.5\",\"Seamonkey-1.1.13-1(X11; U; GNU Fedora fc 10) Gecko/20081112\",\"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Zune 4.0; Tablet PC 2.0; InfoPath.3; .NET4.0C; .NET4.0E)\",\"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MS-RTC LM 8; .NET4.0C; .NET4.0E; InfoPath.3)" The request appears to have originated from 91.121.153.210 - which appears to be owned by these guys: http://www.medialta.eu/accueil.html I find this rather impressive - a request from 'all' user-agents. There's actually quite a few of these requests over at least the few days - so it naturally piqued my interested. Searching Google simply seems to produce a very long list of websites which make their Apache access logs publicly available... Is this some weird indication that we're being targeted? And by who?

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• apt-get update cannot find ubuntu servers

  - by Phrogz

  Running sudo apt-get update fails on my server (that has a 'net connection). Are the servers temporarily broken, or is my apt misconfigured and using old servers? In short, how do I fix this? Here's the output: ~$ uname -a Linux nematode 2.6.28-19-server #66-Ubuntu SMP Sat Oct 16 18:41:24 UTC 2010 i686 GNU/Linux ~$ sudo apt-get update Err http://us.archive.ubuntu.com jaunty Release.gpg Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/main Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/restricted Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/universe Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/multiverse Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates Release.gpg Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/main Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/restricted Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/universe Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/multiverse Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://security.ubuntu.com jaunty-security Release.gpg Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/main Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/restricted Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/universe Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/multiverse Translation-en_US Could not resolve 'security.ubuntu.com' Reading package lists... Done W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/Release.gpg Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/main/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/restricted/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/universe/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/Release.gpg Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/main/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/restricted/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/universe/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/Release.gpg Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/main/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/restricted/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/universe/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Some index files failed to download, they have been ignored, or old ones used instead. W: You may want to run apt-get update to correct these problems

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• Importing Multiple Schemas to a Model in Oracle SQL Developer Data Modeler

  - by thatjeffsmith

  Your physical data model might stretch across multiple Oracle schemas. Or maybe you just want a single diagram containing tables, views, etc. spanning more than a single user in the database. The process for importing a data dictionary is the same, regardless if you want to suck in objects from one schema, or many schemas. Let’s take a quick look at how to get started with a data dictionary import. I’m using Oracle SQL Developer in this example. The process is nearly identical in Oracle SQL Developer Data Modeler – the only difference being you’ll use the ‘File’ menu to get started versus the ‘File – Data Modeler’ menu in SQL Developer. Remember, the functionality is exactly the same whether you use SQL Developer or SQL Developer Data Modeler when it comes to the data modeling features – you’ll just have a cleaner user interface in SQL Developer Data Modeler. Importing a Data Dictionary to a Model You’ll want to open or create your model first. You can import objects to an existing or new model. The easiest way to get started is to simply open the ‘Browser’ under the View menu. The Browser allows you to navigate your open designs/models You’ll see an ‘Untitled_1′ model by default. I’ve renamed mine to ‘hr_sh_scott_demo.’ Now go back to the File menu, and expand the ‘Data Modeler’ section, and select ‘Import – Data Dictionary.’ This is a fancy way of saying, ‘suck objects out of the database into my model’ Connect! If you haven’t already defined a connection to the database you want to reverse engineer, you’ll need to do that now. I’m going to assume you already have that connection – so select it, and hit the ‘Next’ button. Select the Schema(s) to be imported Select one or more schemas you want to import The schemas selected on this page of the wizard will dictate the lists of tables, views, synonyms, and everything else you can choose from in the next wizard step to import. For brevity, I have selected ALL tables, views, and synonyms from 3 different schemas: HR SCOTT SH Once I hit the ‘Finish’ button in the wizard, SQL Developer will interrogate the database and add the objects to our model. The Big Model and the 3 Little Models I can now see ALL of the objects I just imported in the ‘hr_sh_scott_demo’ relational model in my design tree, and in my relational diagram. Quick Tip: Oracle SQL Developer calls what most folks think of as a ‘Physical Model’ the ‘Relational Model.’ Same difference, mostly. In SQL Developer, a Physical model allows you to define partitioning schemes, advanced storage parameters, and add your PL/SQL code. You can have multiple physical models per relational models. For example I might have a 4 Node RAC in Production that uses partitioning, but in test/dev, only have a single instance with no partitioning. I can have models for both of those physical implementations. The list of tables in my relational model Wouldn’t it be nice if I could segregate the objects based on their schema? Good news, you can! And it’s done by default Several of you might already know where I’m going with this – SUBVIEWS. You can easily create a ‘SubView’ by selecting one or more objects in your model or diagram and add them to a new SubView. SubViews are just mini-models. They contain a subset of objects from the main model. This is very handy when you want to break your model into smaller, more digestible parts. The model information is identical across the model and subviews, so you don’t have to worry about making a change in one place and not having it propagate across your design. SubViews can be used as filters when you create reports and exports as well. So instead of generating a PDF for everything, just show me what’s in my ‘ABC’ subview. But, I don’t want to do any work! Remember, I’m really lazy. More good news – it’s already done by default! The schemas are automatically used to create default SubViews Auto-Navigate to the Object in the Diagram In the subview tree node, right-click on the object you want to navigate to. You can ask to be taken to the main model view or to the SubView location. If you haven’t already opened the SubView in the diagram, it will be automatically opened for you. The SubView diagram only contains the objects from that SubView Your SubView might still be pretty big, many dozens of objects, so don’t forget about the ‘Navigator‘ either! In summary, use the ‘Import’ feature to add existing database objects to your model. If you import from multiple schemas, take advantage of the default schema based SubViews to help you manage your models! Sometimes less is more!

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• apt-get update cannot find ubuntu servers

  - by Phrogz

  Running sudo apt-get update fails on my server (that has a 'net connection). Are the servers temporarily broken, or is my apt misconfigured and using old servers? In short, how do I fix this? Here's the output: ~$ uname -a Linux nematode 2.6.28-19-server #66-Ubuntu SMP Sat Oct 16 18:41:24 UTC 2010 i686 GNU/Linux ~$ sudo apt-get update Err http://us.archive.ubuntu.com jaunty Release.gpg Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/main Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/restricted Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/universe Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty/multiverse Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates Release.gpg Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/main Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/restricted Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/universe Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://us.archive.ubuntu.com jaunty-updates/multiverse Translation-en_US Could not resolve 'us.archive.ubuntu.com' Err http://security.ubuntu.com jaunty-security Release.gpg Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/main Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/restricted Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/universe Translation-en_US Could not resolve 'security.ubuntu.com' Err http://security.ubuntu.com jaunty-security/multiverse Translation-en_US Could not resolve 'security.ubuntu.com' Reading package lists... Done W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/Release.gpg Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/main/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/restricted/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/universe/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/Release.gpg Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/main/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/restricted/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/universe/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'us.archive.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/Release.gpg Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/main/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/restricted/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/universe/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/multiverse/i18n/Translation-en_US.bz2 Could not resolve 'security.ubuntu.com' W: Some index files failed to download, they have been ignored, or old ones used instead. W: You may want to run apt-get update to correct these problems

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• SQL Developer Blitz at ODTUG Kscope12

  - by thatjeffsmith

  Oracle Development Tools User Group (ODTUG) puts on an outstanding event, and I enjoy that the content comes FIRST. Yes, the after-event parties and entertainment are first class, but I look forward most to sitting in on some excellent sessions. For Kscope12 one would expect Oracle to have a large presence, and you would be absolutely correct! The APEX team will be there in full force, and we’ll have sessions on JDeveloper, ADF, and .NET. But what I want to talk about today is our awesome line-up of coverage for Oracle SQL Developer (Surprise!) DB and Developer’s Toolbox Symposium Kris Rice or @krisrice, Product Development Manager for SQL Developer, will speak at 10AM Sunday about SQL Developer Data Modeler. Our free data modeling solution allows one to reverse engineer a data dictionary to a model, modify it, and create a script of the changes. Collaboration is an important part of any development team; with built-in subversion support, the modeler makes collaboration easy, not just possible. After the morning break, I’ll be talking about SQL Developer’s PL/SQL support. From creating your code, to debugging, tuning, testing, and documenting PL/SQL – SQL Developer fits the bill. Since I have a full hour, I should have time to do a little riff on using source control to version and manage your revisions too! At 3:15 Jagan Athreya will talk about the new integration between SQL Developer and Enterprise Manager Cloud Control 12c. Enabling developers to define changes in SQLDeveloper and allowing DBAs to promote these changes to Test and Production via Enterprise Manager will reduce errors, accelerate productivity, and help eliminate unplanned downtime. Get your SQL Developer groove on at ODTUG Kscope12! Presentations SQL Developer Tips and Tricks Monday June 25, Session 5, 4:15 pm – 5:15 pm I’ll take you through my favorite keyboard shortcuts, top 10 preferences every user should tweak, and spotlight features that the average user probably hasn’t discovered yet. My goal for this session is for everyone to take 1-2 tips they can implement immediately to save mucho time. I enjoy interacting with the audience so no two versions of this presentation are the same. Oracle SQL Developer and Data Modeler New Features When: Tuesday June 26, Session 6, 8:30 am – 9:30 am Ashley Chen, my PM-partner-in-crime, will be covering all the new features from our two latest updates. So if you’re new to SQL Developer, or you’ve been using an older version, stop by and see what new toys you have to play with. I also have a bet with Ashley that she will have more attendees than me, so be sure to show up so I can collect. Debugging PL/SQL With SQL Developer When: Wednesday June 27, Session 16, 3:00 pm – 4:00 pm Me again – sorry. This time I have an entire hour to JUST talk about PL/SQL and debugging! Should you use a watch with a break condition, or a breakpoint with a passcount? How does external debugging with a Perl script work? Can I just debug an anonymous PL/SQL block. So if debugging to you is just a DBMS_OUTPUT.PUT_LINE() call, stop by and see how our IDE can help you take things to the next level! Or is that level++? Hands-on-Training SQL Developer Soup to Nuts When: Tuesday, 8:00 AM – 9:30 AM If you learn by doing, this is the session for you. Bring your own laptop or use one of the lab machines. We’ll give you a VirtualBox OEL image running 11gR2 EE Database with all the fixin’s (that’s Southern speak for Partitioning, Advanced Compression, Tuning & Diagnostic Packs, etc), TimesTen, APEX and much more. All you have to do is login and run through our lab exercises. You can start with a model and work your way up to debugging and testing your own appliction, or you can pick and choose your lessons to suit your needs. We’ll have people on hand to help you out and answer your questions. Booth Hours We’ll be in the vendor area and have our very own ‘demo pod’ for SQL Developer. Between Kris, Ashley, and I we should be able to answer your questions or show you how to ‘do that thing’ in the tool. Or just stop by and say hello! We’ll be around the following hours’ish: Sunday, June 24, 2012 6:00 PM – 8:00 PM Monday, June 25, 2012 9:00 AM – 4:30 PM Tuesday, June 26, 2012 9:30 AM – 3:30 PM Wednesday, June 27, 2012 10:15 AM – 2:00 PM No Excuses – If You Have Questions, This is Your Chance to Get Your Answers! We’re doing just about everything outside of a scavenger hunt to bring information and value to our users. Let us know what you like, what you don’t like, and we’ll do our best to do more of the former and less of the latter!

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• My Interview with Microsoft

  - by Victor Hurdugaci

  This post is for those who want to apply or have already applied (but not finished the interview) for a Microsoft Job. The recruitment process is quite similar for everyone and consists of a few steps. Application E-Mail Interview Phone Interview On Site Interview I will tell you my story and how I went through the four phases. 1. Application My blog's title (Ex Nihilo Nihil Fit) means "Nothing Comes Out of Nothing". You can't get a job at Microsoft by not doing anything - this is true for anything else. The first step you need to complete is the application process. For this, many options are available. You can... ... apply online on Microsoft's Careers website as I did ... send your CV to different e-mail addresses (there are some dedicated e-mails for different positions) ... apply through some 3rd party organization (job shop, campus recruitment, job agency, etc) On MS Careers you just have to post your CV and choose the job you want. That's all! No recommendation letter, no cover letter, no nothing. Of course, not every CV passes the selection process. Here are some tips for improving your resume (worked for me): Don't write it just before applying! Write a draft version, wait a few days and then review it. This way you will find a lot of mistakes and stupid things you wrote initially. If you review it immediately after writing, your mind will not be criticism oriented and will just ignore mistakes. Repeat the write-wait-review process as many times as necessary, until you find that the review revealed no mistakes. After you did the final review and the CV is bullet-proof, ask others to review it. They will definitely find inconsistencies and mistakes and this will make you feel stupid. This is good because will open your eyes will make you go into an 'I want to improve' mode. You'll try to correct everything. After you come up with a modified version go again through steps 1 and 2. Repeat this as many times as necessary. [Special thanks to Lucian Sasu, Nadia Comanici, Andrei Ciobanu, Monica Balan and Lavinia Tanase for reviewing my CV!] Make it short and give only relevant facts. Initially, I come up with a 5 pages CV because I wrote every single technology with which I worked. There were a lot irrelevant things, I wrote Windows Workflow Foundation just because I played with it for a few days. I added extensive descriptions for every project, made a personal details section (name, birth date, address, etc) of 1/2 page. Others suggested to cut everything that was not necessary. You don't need to give extensive descriptions, just add a few words. For example, I wrote "VS Image Visualizer - Visual Studio 2008 debug visualizer for images" and added a link to the project's page - you submit formatted andcan embed links. Add something that makes it different. I don't know if this makes a difference, but I added some lines to separate items just like in the picture below. Definitely Microsoft gets thousands of CVs per day. You need something special. Don't lie! Tell exactly what you did and what is the proficiency level of your skills. For example, don't write "Advanced" for UML if you don't know the difference between composition and aggregation. Be realistic and don't under/over estimate yourself. Use the spell chick. Make sure everything is written in correct English and there are no grammar/spelling mistakes. Noddy likes a WC with grammar mi takes. You mght fail just because of that. Once you completed your CV, choose the job that suits best your needs, apply and wait... The waiting is a problem because all these big companies like Microsoft, Google, Mozilla, Apple, etc. will contact you only if they find something interesting in your application. If you're not suitable, then no rejection is sent. I applied for an Intern Software Development Engineer position at Microsoft Redmond. I cannot apply for a full time position because I want to finish the master program on time, in the next summer - an internship is just what I need. 2. E-Mail Interview January 20, 2010. Two months since I submitted the CV. I wasn't hoping anymore that MS will contact me, when I got an e-mail titled: "Victor Hurdugaci ES DK" from Holly Peterson saying: Read more >>

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• Top 10 Tips & Tricks for Oracle SQL Developer

  - by thatjeffsmith

  Being a short week due to the holiday, and with everyone enjoying their Summer vacations (apologies Southern Hemispherians), I reckoned it was a great time to do one of those lazy recap-Top 10-Reader’s Digest type posts. I’ve been sharing 1-3 tips or ‘tricks’ a week since I started blogging about SQL Developer, and I have more than enough content to write a book. But since I’m lazy, I’m just going to compile a list of my favorite ‘must know’ tips instead. I always have to leave out a few tips when I do my presentations, so now I can refer back to this list to make sure I’m not forgetting anything. So without further ado… 1. Configure Your Preferences Yes, there are a LOT of options. But you don’t need to worry about all of them just yet. I do recommend you take a quick look at these ones in particular. Whether you’re new to the tool or have been using it for 5 years, don’t overlook these settings! 2. Disable Extensions You Aren’t Using If you’re not using Data Miner, or if you’re not working on a Migration – disable those extensions! SQL Developer will run leaner & meaner, plus the user interface will be a bit more simplified making the tool easier to navigate as well. 3. SQL Recall via Keyboard Access your history via the keyboard! Cycle through your recent SQL statements just using these magic key strokes! Ctrl+Up or Ctrl+Down. 4. Format Your Query Output Directly to CSV, XML, HTML, etc Have the query results pre-formatted in the format of your choice! Too lazy to run the Export wizard for your query result sets? Just add the SQL Developer output hints to your statement and have the output auto-magically formatted to the style of your choice! 5. Drag & Drop Multiple Tables to the Worksheet SQL Developer will auto-join the related objects. You can then toggle over to the Query Builder to toggle off the columns you don’t want to query. I guarantee this tip will save you time if you’re joining 3 or more tables! 6. Drag & Drop Multiple Tables to a Relational Model A pretty picture is worth a few dozen DDL scripts? SQL Developer does data modeling! If you ctrl-drag a table to a model, it will take that table and any related tables and reverse engineer them to a relational model! You can then print it out or export it to HTML, PDF, etc. 7. View Your PL/SQL Execution Output Automatically Function returns a refcursor? Procedure had 3 out parameters? When you run these programs via the Procedure Editor, we automatically capture the output and place them into one or more data grids for you to browse. 8. Disable Automatic Code Insight and Use It On-Demand Code Editor – Completion Insight – Enable Completion Auto-Popup (Keyword being Auto) Some folks really don’t like it when their IDEs or word-processors try to do ‘too much’ for them. Thankfully SQL Developer allows you to either increase the delay before it attempts to auto-complete your text OR to disable the automatic bit. Instead, you can invoke it on-demand. 9. Interactive Debugging – Change Your Variable Values as You Step Through Your PLSQL Watches aren’t just for watching. You can actually interact with your programs and ‘see what happens’ when X = 256 instead of 1. 10. Ditch the Tree View for the Schema Browser There’s nothing wrong with the Connection tree for browsing your database objects. But some folks just can’t seem to get comfortable with it. So, we built them a Schema Browser that uses a drop down control instead for changing up your schema and object types. Already Know This Stuff, Want More? Just check out my SQL Developer resource page, it’s one of the main links on the top of this page. Or if you can’t find something, just drop me a note in the form of a comment on this page and I’ll do my best to find it or write it for you.

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• Change Comes from Within

  - by John K. Hines

  I am in the midst of witnessing a variety of teams moving away from Scrum. Some of them are doing things like replacing Scrum terms with more commonly understood terminology. Mainly they have gone back to using industry standard terms and more traditional processes like the RAPID decision making process. For example: Scrum Master becomes Project Lead. Scrum Team becomes Project Team. Product Owner becomes Stakeholders. I'm actually quite sad to see this happening, but I understand that Scrum is a radical change for most organizations. Teams are slowly but surely moving away from Scrum to a process that non-software engineers can understand and follow. Some could never secure the education or personnel (like a Product Owner) to get the whole team engaged. And many people with decision-making authority do not see the value in Scrum besides task planning and tracking. You see, Scrum cannot be mandated. No one can force a team to be Agile, collaborate, continuously improve, and self-reflect. Agile adoptions must start from a position of mutual trust and willingness to change. And most software teams aren't like that. Here is my personal epiphany from over a year of attempting to promote Agile on a small development team: The desire to embrace Agile methodologies must come from each and every member of the team. If this desire does not exist - if the team is satisfied with its current process, if the team is not motivated to improve, or if the team is afraid of change - the actual demonstration of all the benefits prescribed by Agile and Scrum will take years. I've read some blog posts lately that criticise Scrum for demanding "Big Change Up Front." One's opinion of software methodologies boils down to one's perspective. If you see modern software development as successful, you will advocate for small, incremental changes to how it is done. If you see it as broken, you'll be much more motivated to take risks and try something different. So my question to you is this - is modern software development healthy or in need of dramatic improvement? I can tell you from personal experience that any project that requires exploration, planning, development, stabilisation, and deployment is hard. Trying to make that process better with only a slightly modified approach is a mistake. You will become completely dependent upon the skillset of your team (the only variable you can change). But the difficulty of planned work isn't one of skill. It isn't until you solve the fundamental challenges of communication, collaboration, quality, and efficiency that skill even comes into play. So I advocate for Big Change Up Front. And I advocate for it to happen often until those involved can say, from experience, that it is no longer needed. I hope every engineer has the opportunity to see the benefits of Agile and Scrum on a highly functional team. I'll close with more key learnings that can help with a Scrum adoption: Your leaders must understand Scrum. They must understand software development, its inherent difficulties, and how Scrum helps. If you attempt to adopt Scrum before the understanding is there, your leaders will apply traditional solutions to your problems - often creating more problems. Success should be measured by quality, not revenue. Namely, the value of software to an organization is the revenue it generates minus ongoing support costs. You should identify quality-based metrics that show the effect Agile techniques have on your software. Motivation is everything. I finally understand why so many Agile advocates say you that if you are not on a team using Agile, you should leave and find one. Scrum and especially Agile encompass many elegant solutions to a wide variety of problems. If you are working on a team that has not encountered these problems the the team may never see the value in the solutions.   Having said all that, I'm not giving up on Agile or Scrum. I am convinced it is a better approach for software development. But reality is saying that its adoption is not straightforward and highly subject to disruption. Unless, that is, everyone really, really wants it.

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• Intel Dual Band Wireless-AC 7260 keeps dropping wifi

  - by Rick T

  My wifi Intel Dual Band Wireless-AC 7260 keeps dropping wificonnection drops and the network to which I was connected disappears from the list of available networks in network manager. The only way to fix it is to disable wifi and re-enable it How can I fix this. I'm using ubuntu 14.04 64bit. It mostly drops connections on the 5ghz network. My other devices don't drop connections over wifi. see logs and versions rt@simon:~$ uname -a Linux simon 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux rt@simon:~$ rt@simon:~$ dmesg | grep iwl [ 3.370777] iwlwifi 0000:03:00.0: irq 46 for MSI/MSI-X [ 3.381089] iwlwifi 0000:03:00.0: loaded firmware version 22.24.8.0 op_mode iwlmvm [ 3.414637] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144 [ 3.414695] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 3.414913] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 3.630208] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs' [ 9.304838] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 9.305068] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 605.483174] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 605.483396] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S rt@simon:~$ cat /var/log/syslog | grep -e iwl -e 80211 | tail -n25 Aug 14 08:13:02 simon kernel: [ 3.452780] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:13:02 simon kernel: [ 3.630208] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs' Aug 14 08:13:06 simon NetworkManager[1125]: <info> rfkill1: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/ieee80211/phy0/rfkill1) (driver iwlwifi) Aug 14 08:13:06 simon NetworkManager[1125]: <info> (wlan0): using nl80211 for WiFi device control Aug 14 08:13:06 simon NetworkManager[1125]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwlwifi' ifindex: 3) Aug 14 08:13:06 simon kernel: [ 9.304838] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S Aug 14 08:13:06 simon kernel: [ 9.305068] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S Aug 14 08:14:18 simon kernel: [ 81.230162] cfg80211: Calling CRDA to update world regulatory domain Aug 14 08:14:18 simon kernel: [ 81.232330] cfg80211: World regulatory domain updated: Aug 14 08:14:18 simon kernel: [ 81.232332] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Aug 14 08:14:18 simon kernel: [ 81.232333] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:14:18 simon kernel: [ 81.232334] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:14:18 simon kernel: [ 81.232335] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Aug 14 08:14:18 simon kernel: [ 81.232336] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:14:18 simon kernel: [ 81.232337] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:23:02 simon kernel: [ 605.483174] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S Aug 14 08:23:02 simon kernel: [ 605.483396] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S Aug 14 08:23:18 simon kernel: [ 621.223905] cfg80211: Calling CRDA to update world regulatory domain Aug 14 08:23:18 simon kernel: [ 621.228945] cfg80211: World regulatory domain updated: Aug 14 08:23:18 simon kernel: [ 621.228950] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Aug 14 08:23:18 simon kernel: [ 621.228954] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:23:18 simon kernel: [ 621.228956] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:23:18 simon kernel: [ 621.228959] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Aug 14 08:23:18 simon kernel: [ 621.228961] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Aug 14 08:23:18 simon kernel: [ 621.228963] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

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