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• An invitation to join a JDeveloper and ADF productivity clinic (and more!) at KScope

  - by Chris Muir

  Would you like a chance to influence Oracle's decisions on tool usability and productivity? If you're attending ODTUG's Kaleidoscope conference this year in San Antonio, Oracle would like to invite you to participate in our Usability Activity Research and separately our JDeveloper and ADF Productivity Clinics with our experienced user experience teams.  The teams are keen to hear what you have to say about your experiences with our tools in general and specifically JDeveloper and ADF.  The details of each event are described below. Invitation to Usability Activity - Sunday June 24th to Wednesday June 27th Oracle is constantly working on new tools and new features for developers, and invites YOU to become a key part of the process!  As a special addition to Kscope 12, Oracle will be conducting onsite usability research in the Alyssum room, from Sunday June 24 to Wednesday June 27. Usability activities are scheduled ahead of time for participants' convenience.  If you would like to take part, please fill out this form to let us know of the session(s) that you would like to attend and your development experience. You will be emailed with your scheduled session before the start of the conference. JDeveloper and ADF Productivity Clinic - Thursday June 28th Are you concerned that Java, Oracle ADF or JDeveloper is difficult? Is JDeveloper making you jump through hoops?  Do you hate a particular dialog or feature of JDeveloper? Well, come and get things off your chest! Oracle is hosting a product management and user experience clinic where we want to hear about your issues and concerns. What's difficult to use?  What doesn't work the way you want, and how would you want it to work?  What isn't behaving like your current favorite tool?  If we can't help on you the spot, we'll take your feedback and use it to improve the product experience.  A great opportunity to get answers, or get improvements. Drop by the Alyssum room, anytime from 8:30 to 10:30 on Thursday, June 28. We look forward to seeing you at KScope soon! 

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• Any ideas on reducing lag in terrain generation?

  - by l5p4ngl312

  Ok so here's the deal. I've written an isometric engine that generates terrain based on camera values using 2D perlin noise. I planned on doing 3D but first I need to work out the lag issues I'm having. I will try to explain how I am doing this so that maybe someone can spot where I am going wrong. I know it should not be this laggy. There is the abstract class Block which right now just contains render(). BlockGrass, etc. extend this class and each has code in the render function to create a textured quad at the given position. Then there is the class Chunk which has the function Generate() and setBlocksInArea(). Generate uses 2D perlin noise to make a height map and stores the heights in a 2D array. It stores the positions of each block it generates in blockarray[x][y][z]. The chunks are 8x8x128. In the main game class there is a 3D array called blocksInArea. The blocks in this array are what gets rendered. When a chunk generates, it adds its blocks to this array at the correct index. It is like this so chunks can be saved to the hard drive (even though they aren't yet) but there can still be optimization with the rendering that you wouldn't have if you rendered each chunk separately. Here's where the laggy part comes in: When the camera moves to a new chunk, a row of chunks generates on the end of the axis that the camera moved on. But it still has to move the other chunks up/down in the blocksInArea (render) array. It does this by calculating the new position in the array and doing the Chunk.setBlocksInArea(): for(int x = 0; x < 8; x++){ for(int y = 0; y < 8; y++){ nx = x+(coordX - camCoordX)*8 ny = y+(coordY - camCoordY)*8 for(int z = 0; z < height[x][y]; z++){ blockarray[x][y][z] = Game.blocksInArea[nx][ny][z]; } } } My reasoning was that this would be much faster than doing the perlin noise all over again, but there are still little spikes of lag when you move in between chunks. Edit: Would it be possible to create a 3 dimensional array list so that shifting of chunks within the array would not be neccessary?

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• Modelling highly specific business requirements

  - by AndyBursh

  How can one go about modelling highly specific business requirements, which have no precedent in the system? Take for example the following requirement: When a purchase order contains N lines, is over X value in total and is being recorded against project Y, an email needs to be sent to persons A and B with the details This requirement supplements other requirements surrounding purchase orders, but comes in at a much later date in response to some ongoing problem elsewhere in the business. Persons A and B are not part of any role or group in the system, and don't hold any specific responsibility; they are simply the two people the business has appointed to receive these emails in this very specific case. Projects are also data driven, so project Y has no special properties to distinguish it from any other project. The only way to identify it is to compare its identifier to a magic number. How can one go about modelling this kind of case without introducing too much additional complexity? That I can think of right now, there are a couple of options. Perform the checks and actions inline with the existing code. Here we find the correct spot in the code, check the conditions in the requirement and send the emails to hardcoded addresses. Of course this is fraught with issues. At the very least it stops working if one of these people leaves or changes their email address. At worst you have to ensure that any tests and test data are aware that additional actions are taken for a specific set of criteria. Introduce some form of events system. Here we introduce an eventing system, so that we might react to some event, and fulfil the requirement outside of the usual path of execution. This sounds like a cleaner solution than option 1, but the work involved is ultimately probably slightly overkill for this one small requirement. That said, having it in place does allow the system to handle these kinds of specific requirements consistently and easily in the future. Are there any other (good/better) ways of handling highly specific requirements? I mean other than telling the other parts of the business no!

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• How can I be prepared to join a company?

  - by Aerovistae

  There's more to it than that, but this title was the best way I could think of to sum it up. I'm a senior in a good computer science program, and I'm graduating early. About to start interviews and all whatnot. I'm not a super-experienced programmer, not one of those people who started in middle school. I'm decent at this, but I'm not among the best, not nearly. I have to do an awful lot of googling. So today I'm meeting some fellow for lunch at a campus cafe to discuss some front-end details when this tall, good-looking guy begs pardon, says he's new to campus, says he's wondering if we know where he can go to sign up for recruiting developers. Quickly evolves into long conversation: he's the CEO of a seems-to-be-doing-well start-up. Hiring passionate interns and full-times. Sounds great! I take one look at his site on my own computer later, immediately spot a major bug. No idea how to fix it, but I see it. I go over to the page code, and good god. It's the standard amount of code you would expect from a full-scale web application, a couple dozen pages of HTML and scripts. I don't even know where to start reading it. I've built sites from scratch, but obviously never on that scale, nor have I ever worked on one of that scale. I have no idea which bit might generate the bug. But that sets me thinking: How could someone like me possibly settle into an environment like that? A start-up is a very high-pressure working environment. I don't know if I can work at that pace under those constraints-- I would hate to let people down. And with only 10 employees, it's not like anyone has much time to help you get your bearings. Somewhere in there is a question. Can you see it? I'm asking for general advice here. Maybe even anecdotal advice. Is joining a start-up right out of college a scary process? Am I overestimating what it would take to figure out the mass of code behind this site? What's the likelihood a decent but only moderately-experienced coder could earn his pay at such a place? For instance, I know nothing of server-side/back-end programming. Never touched it. That scares me.

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• JavaOne Session Report - Java ME SDK 3.2

  - by Janice J. Heiss

  Oracle Product Manager for Java ME SDK, Sungmoon Cho, presented a session, "Developing Java Mobile and Embedded Applications with Java ME SDK 3.2,” wherein he covered the basic new features of the Java ME Platform SDK 3.2, a state-of-the-art toolbox for developing mobile and embedded applications. The session began with a summary of the four main components of Java ME SDK. A device emulator allows developers to quickly run and test applications before commercialization. It supports CLDC/MIDP CLDC/IMP.NG and CLC/AGUI. A development environment assists writing, running debugging and deploying and enables on-device debugging. Samples provide developers with useful codes and frameworks. IDE Plugins – NetBeans and Eclipse – equip developers with CPU Profiler, Memory Monitor, Network Monitor, and Device Selector. This means that manual integration is no longer necessary. Cho then talked about the Java ME SDK’s on-device tooling architecture: * Java ME SDK provides an architecture ideal for on-device-debugging.* Device Manager plays the central role by managing different devices whether it is the emulator or a device that Oracle provides or recommends or a third party device as long as the devices have a Java Runtime that supports the protocol that is designated.* The Emulator provides an accurate emulation, since it uses the same code base used in Oracle’s Java ME runtime.* The Universal Emulator Interface (UEI) makes it easy for IDEs to detect the platform.He then focused on the Java ME SDK release highlights, which include: * Implementation and support for the new Oracle® Java Wireless Client 3.2 runtime and the Oracle® Java ME Embedded runtime. A full emulation for the runtime is provided.* Support for JSR 228, the Information Module Profile-Next Generation API (IMP-NG). This is a new profile for embedded devices. * A new Custom Device Skin Creator.* An Eclipse plugin for CLDC/MIDP.* Profiling, Network monitoring, and Memory monitoring are now integrated with the NetBeans profiling tools.* Java ME SDK Update CenterCho summarized the main features: IDE Integration (NetBeans and Eclipse) enables developers to write, run, profile, and debug their applications on their favorite IDE. CPU ProfilerThis enables developers to more quickly detect the hot spot and where CPU time is being used. They can double click the method to jump directly into the source code.Memory Monitor Developers can monitor objects and memory usage in real time.Debugger on the Emulator and DeviceDevelopers can run their applications step by step, and inspect the variables to pinpoint the problem. The debugging can take place either on the emulator or the device.Embedded Application DevelopmentIMP-NG, Device Access, Logging, and AMS API Support are now available.On-Device ToolingConnect your device to your computer, and run and debug the application right on your device.Custom Device Skin CreatorDefine your own device and test on an environment that is closest to your target device. The informative session concluded with a demo that showed more concretely how to apply the new features in Java ME SDK 3.2.

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• Advantages to Multiple Methods over Switch

  - by tandu

  I received a code review from a senior developer today asking "By the way, what is your objection to dispatching functions by way of a switch statement?" I have read in many places about how pumping an argument through switch to call methods is bad OOP, not as extensible, etc. However, I can't really come up with a definitive answer for him. I would like to settle this for myself once and for all. Here are our competing code suggestions (php used as an example, but can apply more universally): class Switch { public function go($arg) { switch ($arg) { case "one": echo "one\n"; break; case "two": echo "two\n"; break; case "three": echo "three\n"; break; default: throw new Exception("Unknown call: $arg"); break; } } } class Oop { public function go_one() { echo "one\n"; } public function go_two() { echo "two\n"; } public function go_three() { echo "three\n"; } public function __call($_, $__) { throw new Exception("Unknown call $_ with arguments: " . print_r($__, true)); } } Part of his argument was "It (switch method) has a much cleaner way of handling default cases than what you have in the generic __call() magic method." I disagree about the cleanliness and in fact prefer call, but I would like to hear what others have to say. Arguments I can come up with in support of Oop scheme: A bit cleaner in terms of the code you have to write (less, easier to read, less keywords to consider) Not all actions delegated to a single method. Not much difference in execution here, but at least the text is more compartmentalized. In the same vein, another method can be added anywhere in the class instead of a specific spot. Methods are namespaced, which is nice. Does not apply here, but consider a case where Switch::go() operated on a member rather than a parameter. You would have to change the member first, then call the method. For Oop you can call the methods independently at any time. Arguments I can come up with in support of Switch scheme: For the sake of argument, cleaner method of dealing with a default (unknown) request Seems less magical, which might make unfamiliar developers feel more comfortable Anyone have anything to add for either side? I'd like to have a good answer for him.

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• AS3 - At exactly 23 empty alpha channels, images below stop drawing

  - by user46851

  I noticed, while trying to draw large numbers of circles, that occasionally, there would be some kind of visual bug where some circles wouldn't draw properly. Well, I narrowed it down, and have noticed that if there is 23 or more objects with 00 for an alpha value on the same spot, then the objects below don't draw. It appears to be on a pixel-by-pixel basis, since parts of the image still draw. Originally, this problem was noticed with a class that inherited Sprite. It was confirmed to also be a problem with Sprites, and now Bitmaps, too. If anyone can find a lower-level class than Bitmap which doesn't have this problem, please speak up so we can try to find the origin of the problem. I prepared a small test class that demonstrates what I mean. You can change the integer value at line 20 in order to see the three tests I came up with to clearly show the problem. Is there any kind of workaround, or is this just a limit that I have to work with? Has anyone experienced this before? Is it possible I'm doing something wrong, despite the bare-bones implementation? package { import flash.display.Sprite; import flash.events.Event; import flash.display.Bitmap; import flash.display.BitmapData; public class Main extends Sprite { public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point Test(3); } private function Test(testInt:int):void { if(testInt==1){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var i:int = 0; i < 22; i++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } } if(testInt==2){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var j:int = 0; j < 23; j++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } } if(testInt==3){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var k:int = 0; k < 22; k++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } var M:Bitmap = new Bitmap(new BitmapData(100, 100, true, 0x00000000)); M.x += 50; M.y += 50; addChild(M); } } } }

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• Are there software options (preferabbly .NET) for doing distance and speed analysis of footballers moving on video?

  - by Anonymous Type

  Editing Question for Clarity Thanks for feedback so far, very insightful. I'm not sure how far along this part of the software community is, and what if any libraries exist for me to leverage from. Heres what I'm trying to do. Problem: Take an existing video of a game of rugby league. The Rugby League field is 100 metres long, 70 metres wide, and has white line markings every 10 metres running along the width of the field, as well as along the sidelines. Each side has 13 players on the field. Players on each team have identical jerseys that normally constrast strongly against background colours (green/brown field colour) and the referee's colour (usually yellow) and the designated water runner (orange). All players have a unique number in thick white lettering on their backs for identification. Video is taken with a high definition camera. Currently only one camera is used (2D) and existing video does not contain a foreground object of fixed spatial dimensions (as suggested in one answer for comparision measurements, however I could add this to future filming sessions if it is worthwhile). The player's do not run in a straight line 50% of the time but will go sideways on on a diagonal to the play the ball. The distance measured always starts from the spot of the previous "tackle", which ends where the player stops forward movement. It is not always possible to determine the players number from the video (facing other direction, sunlight, others standing in the way of the camera). But this isn't important as the software could allow for manual inputting of unknown "runs" at a later point after analysis. Determine the distance between two points (i.e. where the player started his "run" and where he finished it). I'm guessing that this would be quite doable if I manually marked the start and end point in the video. But how would I use landmarks in the background to determine the distance (assuming the person taking the video has kept it from jerking around). Question: Do software packages or libraries exist that are specialised enough to assist with writing analysis software to determine a sports persons distance travelled based on video taken of the performance?

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• Why does my goblin only choose a walk direction once?

  - by Eogcloud

  I'm working on a simpe 2d canvas game that has a small goblin sprite who I want to get pathing around the screen. What I originally tried was a random roll that would choose a direction, the goblin would walk that direction. It didnt work effectively, he sort of wobbled in one spot. Here's my current apporach but he only runs in a rundom direction and doesnt change. What am I doing wrong? Here's all the relevant code to the goblin object and movement. var goblin = { speed: 100, pos: [0, 0], dir: 1, changeDir: true, stepCount: 0, stepTotal: 0, sprite: new Sprite( goblinImage, [0,0], [30,45], 6, [0,1,2,3,2,1], true) }; function getNewDir(){ goblin.dir = Math.floor(Math.random()*4)+1; }; function checkGoblinMovement(){ if(goblin.changeDir){ goblin.changeDir = false; goblin.stepCount = 0; goblin.stepTotal = Math.floor(Math.random*650)+1; getNewDir(); } else { if(goblin.stepCount === goblin.stepTotal){ goblin.changeDir = true; } } }; function update(delta){ healthCheck(); if(isGameOver){ gameOver(); } if(!isGameOver){ updateCharLevel(); keyboardInput(delta); moveGoblin(delta); checkGoblinMovement(); goblin.sprite.update(delta); //update sprites if(mainChar.kills!=0 && bloodReady){ for(var i=0; i<bloodArray.length; i++){ bloodArray[i].sprite.update(delta); } } //collision detection if(collision(mainChar, goblin)) { combatOutcome(combatEvent()); combatCleanup(); } } }; function main(){ var now = Date.now(); var delta = (now - then)/1000; if(!isGameOver){ update(delta); } draw(); then = now; }; function moveGoblin(delta){ goblin.stepCount++; if(goblin.dir === 1){ goblin.pos[1] -= goblin.speed * delta* 2; if(goblin.pos[1] <= 85){ goblin.pos[1] = 86; } } if(goblin.dir === 2){ goblin.pos[1] += goblin.speed * delta; if(goblin.pos[1] > 530){ goblin.pos[1] = 531; } } if(goblin.dir === 3){ goblin.pos[0] -= goblin.speed * delta; if(goblin.pos[0] < 0){ goblin.pos[0] = 1; } } if(goblin.dir === 4){ goblin.pos[0] += goblin.speed * delta* 2; if(goblin.pos[0] > 570){ goblin.pos[0] = 571; } } };

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• Motherboard HDDPWR1 connector

  - by Eric Leschinski

  I need help identifying the name of a connector. I have a Gateway DX4870-UB318 computer, I opened the case and wanted to attach another hard drive, but to my surprise one existing SATA hard drive was connected to the motherboard with this connector: And here is the spot on the Motherboard where the power was supplied. What is the name of this adapter and where can I get another one? Clues: This computer was bought new October 2013 from best buy, box number: DX4870-UB318. The gateway folks won't divulge the type of motherboard it has nor give specs on it. On the wire itself is an identification code: H.35090NJ01-000 Next to the connector on the motherboard it says: HDDPWR1 and the second one says HDDPWR2. This cable has two SATA power connectors and one mystery connector. The power supply has no molex power cables and no SATA power connectors! This is the most bizarre hard drive power system I've seen. I guess the motherboard folks are trying to remove the burden for desktop power supplies to provide adapters (molex, SATA, other) to CD's and hard drives. Can someone put a name on that white flat 6 pin HDD Power Connector? My Solution I can buy a "SATA Power Y Splitter Cable" to provide more spaces to power sata devices.

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• Why does chkdsk produce "Correcting error in index $I30 for file 33267" and then freeze?

  - by wcpro

  I am running chkdsk like this: chkdsk k: /x I get this error: Correcting error in index $I30 for file 33267. What does it mean? Here's the full problem: Microsoft Windows [Version 6.1.7600] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\system32>chkdsk e: /r The type of the file system is NTFS. Volume label is RodDrobo. CHKDSK is verifying files (stage 1 of 5)... 162048 file records processed. File verification completed. 0 large file records processed. 0 bad file records processed. 0 EA records processed. 0 reparse records processed. CHKDSK is verifying indexes (stage 2 of 5)... 10 percent complete. (167130 of 208124 index entries processed) Correcting error in index $I30 for file 33267. Correcting error in index $I30 for file 33267. <--- it always reaches this spot, then hangs forever

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• Mac OS X Server (10.5) mail trapped in queue

  - by Meltemi

  We've got mail accumulating in our Leopard Server's queue and not sure exactly why. This machine has required little maintenance over the years so I'm hoping someone here spot the obvious and save us some time. Let me know what other information would be helfull. Server appears to be functioning normally except for "clogged" queue and the following error associated with each "trapped" message: Looking at messages in the queue each one states something like this: Message ID: 4213C3B8B3F Date: October 27, 2009 11:33:27 AM Size: 1824 Sender: [email protected] Recipient(s) & Status: ---------------------- [email protected]: connect to 127.0.0.1[127.0.0.1]: Connection refused Under SettingsRelay we have checked Accept SMTP relays only from these hosts and networks: 127.0.0.0/8 10.0.1.0/24 The mail in queue is addressed to users whose accounts are on this server. Mail.app on the client appears to be functioning normally and checking checking mail on the server. We did add a virtual domain some time ago but all that was working fine for some time... This just started happening recently...any ideas? Edit: toggling the filter services on and off seems to have fixed this except for 2 remaining queued messages that show "mail transport unavailable" as an error!?!

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• iptables -P FORWARD DROP makes port forwarding slow

  - by Isaac

  I have three computers, linked like this: box1 (ubuntu) box2 router & gateway (debian) box3 (opensuse) [10.0.1.1] ---- [10.0.1.18,10.0.2.18,10.0.3.18] ---- [10.0.3.15] | box4, www [10.0.2.1] Among other things I want box2 to do nat and port forwarding, so that I can do ssh -p 2223 box2 to reach box3. For this I have the following iptables script: #!/bin/bash # flush iptables -F INPUT iptables -F FORWARD iptables -F OUTPUT iptables -t nat -F PREROUTING iptables -t nat -F POSTROUTING iptables -t nat -F OUTPUT # default default_action=DROP for chain in INPUT OUTPUT;do iptables -P $chain $default_action done iptables -P FORWARD DROP # allow ssh to local computer allowed_ssh_clients="10.0.1.1 10.0.3.15" for ip in $allowed_ssh_clients;do iptables -A OUTPUT -p tcp --sport 22 -d $ip -j ACCEPT iptables -A INPUT -p tcp --dport 22 -s $ip -j ACCEPT done # allow DNS iptables -A OUTPUT -p udp --dport 53 -m state \ --state NEW,ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p udp --sport 53 -m state \ --state ESTABLISHED,RELATED -j ACCEPT # allow HTTP & HTTPS iptables -A OUTPUT -p tcp -m multiport --dports 80,443 -j ACCEPT iptables -A INPUT -p tcp -m multiport --sports 80,443 -j ACCEPT # # ROUTING # # allow routing echo 1 >/proc/sys/net/ipv4/ip_forward # nat iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE # http iptables -A FORWARD -p tcp --dport 80 -j ACCEPT iptables -A FORWARD -p tcp --sport 80 -j ACCEPT # ssh redirect iptables -t nat -A PREROUTING -p tcp -i eth1 --dport 2223 -j DNAT \ --to-destination 10.0.3.15:22 iptables -A FORWARD -p tcp --sport 22 -j ACCEPT iptables -A FORWARD -p tcp --dport 22 -j ACCEPT iptables -A FORWARD -p tcp --sport 1024:65535 -j ACCEPT iptables -A FORWARD -p tcp --dport 1024:65535 -j ACCEPT iptables -I FORWARD -j LOG --log-prefix "iptables denied: " While this works, it takes about 10 seconds to get a password promt from my ssh command. Afterwards, the connection is as responsive as could be. If I change the default policy for my FORWARD chain to "ACCEPT", then the password promt is there imediatly. I have tried analysing the logs, but I can not spot a difference in the logs for ACCEPT/DROP in my FORWARD chain. Also I have tried allowing all the unprivileged ports, as box1 uses thoses for doing ssh to box2. Any hints? (If the whole setup seems strange to you - the point of the exercise is to understand iptables ;))

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• PXE with WDS & Windows Server 2012 - no filename option in DHCP lease?

  - by user1799

  I'm trying to configure Windows Server 2012 (a virtual box VM) with WDS so I can PXE boot some Windows 7 VMs (also virtual box). All the machines involved are only attached to the "host only network", 192.168.56.0/24. The Server 2012 machine has been setup as an AD DS machine, has DNS installed and working along with DHCP with option 60 - PXEClient - set and WDS is set to not listen on DHCP ports. I've followed http://technet.microsoft.com/en-us/library/jj648426.aspx very closely. I've used the boot.wim and install.wim files from the Win 7 installation DVD and they're configured as 'boot' and 'installation' images respectively. When I boot the target machine, it gets an IP address, but I simply get 'no filename' and the boot won't proceed any further. I've tried setting option 66 to 192.168.56.2 (the WDS server) and option 67 to both Boot\x64\wdsnbp.com and Boot\x64\pxeboot.n12 but all to no avail. I can't seem to see anything in the event log, either. Can anyone out there spot what I'm doing wrong? Or give tips to narrow down a diagnostic?

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• PBS batch jobs - the qalter command

  - by Ryan Budney

  I've got a giant computation running on a Scientific Linux cluster. At present I have over 600 jobs parked in the queue, waiting for processor time, while a few are running. I'm trying to use the qalter command on some of the idle but scheduled jobs. I'd like to schedule them for a later time, so that other users can jump part of the queue, sort of as an act of politeness. Is this doable? For example, JOBNAME 292399 is currently idle, scheduled to be run whenever a spot in the queue opens up. But if I run qalter -a 10051000 292398 followed by qrerun 292398 I get qrerun: Request invalid for state of job 292398.euler. From the qalter documentation, I thought 10051000 refers to tomorrow (oct 5th, 10am) but perhaps I'm misunderstanding something? If I'm going about this the wrong way, please let me know. The main thing I'm looking for is a command that's easily scriptable, so that I can modify when my queued tasks get run. qalter seems good for those purposes if I can get it working. I'd rather avoid running qdel and re qsubbing the computations, as there's a bookkeeping issue on which tasks to restart (vs which ones not to). I want to avoid that kind of bookkeeping. From googling around I notice some qalter commands have rather different date formats, but the above appears to be correct, as far as I can tell from the man docs. Any help would be appreciated.

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• Can't get an IBM xSeries 345 server to load Windows Server 2003 using ServerGuide utility

  - by Kyle Noland

  I have a client that has an IBM xSeries 345 eServer. Per the IBM support website, I have downloaded the ServerGuide Setup 7.4.17 installation ISO and burned a bootable CD. The CD boots fine and loads the utility. I walk through the following screens without any issue: Set the date and Time Detect the IBM ServeRAID card and install the latest firmware Clear the hard disks Set up the RAID array The next step is format the NOS partition. I select my partition size and the utility goes through the following steps: Creating NOS partition Formatting NOS partition (NTFS) Copying W32 files The copying W32 files takes about 10 minutes. I see the CD drive and disks working hard. When the copying is complete, I'm taken to a blank page just NOS Partitioning at the top. At the bottom of the screen are the familiar Back and Exit buttons. I see the place where the Next button should be, and if I click on it I can tell there is something there, but the space is empty. No button is displayed and clicking the empty spot doesn't ever take me to the next screen. I can't load the OS until I get past this part. I have already tried: Burning multiple copies and versions of the ServerGuide CD Letting the final screen just sit there over the weekend thinking it might advance after syncing the drives or something Has anybody else seen this? I'm really at a loss here. EDIT: I found another person who has the exact same problem as me: http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14451763

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• Inter-vlan routing issues

  - by DKNUCKLES

  I've been brought in to help administer a network and I've run into an issue - I'm not sure why this one is beyond me, however I figure an extra set of eyes on the problem may help resolve the issue. I have an HP MSM720 controller and at the time I'm trying to set up a basic hotspot set up with access points. For the time being I'm just looking to have people authenticate with a PSK and access the internet and other resources (namely printers) on other vlans. The user authenticates and the DHCP server on the controller gives them a 192.168.1.0/24 address. They are able to successfully browse the internet and ping machines on other networks, however they are unable to print to network printers that sit on the same LANs as the very computers that wireless clients can ping. The (extremely simplified) topology is as follows Computers on the wireless 192.168.1.1 network are able to ping computers on the 192.168.0.0 network, however cannot ping or print to the printers on the same network. I'm baffled and I have no idea why this is the case. Can anyone shed some light on this for me? Can someone spot the error of my configuration? EDIT : It should be noted that for whatever reason other computers on the 10.0.100.0/24 network cannot even ping the gateway of the Wireless Access network (192.168.1.1) - I'm not sure if this is relevant. These are the VLANS listed on the controller.

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• award phoenix bios not recognizing my sata hdd.

  - by josh

  What am I doing wrong? I have a custom built comp with a Fatal1ty AA8XE mobo. It has 4 SATA ports and one IDE port. When i first got it, I had a really hard time putting in more than one hard drive. Right now i have one 120gb IDE HDD on master and my DVD+-RW on slave connected to the one IDE spot on the mobo. I ripped a bunch of movies and filled up my HDD, so I got a WD 80gb SATA drive. I plugged it into SATA1 and hooked up the power, turned on comp, went into bios. The only thing in any option in any of the menues in this crazy lookin bios is a thing that says "SATA mode". i put it on IDE, set it so PATA is primary, SATA is secondary. booted up my comp, nothin. Not recognizing the SATA. I went back into the bios and checked it all again. I saw that it says SATA2 and SATA4 are the secondaries so i put it on SATA2, booted, nothing, same with SATA4, same with SATA3, all same as SATA1. Bios and wt os are not recognizing the drive as being there at all. I even downloaded and printed the almost 100 page manual for the mobo, read the entire thing, and still can't figure it out. I know there are a lot of people out there smarter than me when it comes to computers. So please, somebody, anybody, please tell me something that I'm not seeing. Some setting somewhere that I didn't configure right. There is something, obviously, but I can't find it. As far as i can tell, everything is set perfectly fine for my 120gb to be the master and the SATA to be the slave. I don't know what I'm doing wrong but I'm seriously about to throw this computer out the window. thankyou in advance to whoever attempts to help.

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• Enabling Hyper-V Integrated Services Time Sync Services versus Internet Time Synchronization

  - by cpuguru

  Should I deselect the "Synchronize with an Internet Time Server" checkbox under the VM's "Date and Time - Internet Time Settings" tab if the "Time Synchronization Service" for a Hyper-V-based Virtual Machine is enabled? One of the Integration Services that Hyper-V provides is the Time Synchronization Service, which can be enabled/disabled by going to a VM's Settings-Integration Services setting in the Management section. I believe this is checked by default. When you install a Windows Server 2008 OS in a VM on the Hyper-V server, it comes with the "Synchronize with an Internet Time Server" option set, pointing to "time.windows.com". I'd think that if the parent Hyper-V server is set to one time server, and the child VM is pointing to a different time server, there would be a momentary blip if the two are not spot on with their times when the synchronization services run. So the question is, which time sync service should I use? I'm assuming not both. And what is the advantage of one over the other? Note: This question assumes that the machines are not joined to a domain. If they were, the machines would also try to update their time against the domain controller with the primary domain controller role too, right? Thanks!

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• Conditionally changing MIME type in nginx

  - by Peter

  I'm using nginx as a frontend to Rails. All pages are cached as .html files on disk, and nginx serves these files if they exist. I want to send the correct MIME type for feeds (application/rss+xml), but the way I have so far is quite ugly, and I'm wondering if there is a cleaner way. Here is my config: location ~ /feed/$ { types {} default_type application/rss+xml; root /var/www/cache/; if (-f request_filename/index.html) { rewrite (.*) $1/index.html break; } if (-f request_filename.html) { rewrite (.*) $1.html break; } if (-f request_filename) { break; } if (!-f request_filename) { proxy_pass http://mongrel; break; } } location / { root /var/www/cache/; if (-f request_filename/index.html) { rewrite (.*) $1/index.html break; } if (-f request_filename.html) { rewrite (.*) $1.html break; } if (-f request_filename) { break; } if (!-f request_filename) { proxy_pass http://mongrel; break; } } My questions: Is there a better way to change the MIME type? All cached files have .html extensions and I cannot change this. Is there a way to factor out the if conditions in /feed/$ and /? I understand that I can use include, but I'm hoping for a better way. Putting part of the config in a different file is not that readable. Can you spot any bugs in the if conditions? I'm using nginx 0.6.32 (Debian Lenny). I prefer to use the version in APT. Thanks.

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• DNS configuration issues. Clients inside network unable to resolve DNS server's name

  - by hydroparadise

  Setup the DNS service on Ubuntu 12.04 64 and all apears to be well except that my dhcp clients do not recognize my DNS servers hostname. When doing a nslookup on one of my Windows clients, I get C:\Users\chad>nslookup Default Server: UnKnown Address: 192.168.1.2 Where I would expect the FQDN in the spot where UnKnown is seen. The DNS server know's itself pretty well, but I think only because I have an entry in the /etc/hosts file to resolve. There's so many places to look I don't even know where to begin. Are there any logs I can look at? Something. Places I've looked at and configured: /etc/bind/zones/domain.com.db /etc/bind/zones/rev.1.168.192.in-addr.arpa /etc/bind/named.conf.local EDIT: '/etc/bind/zones/rev.1.168.192.in-addr.arpa' @ IN SOA dns-serv1.mydomain.com [email protected]. ( 2006081401; 28800; 604800; 604800; 86400 ) IN NS dns-serv1.mydomain.com. 2 IN PTR dns-serv1 2 IN PTR mydomain.com EDIT 2: '/etc/bind/named.conf.local' zone "mydomain.com" { type master; file "/etc/bind/zones/mydomain.com.db"; }; zone "1.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.0.168.192.in-addr.arpa"; };

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• Server reporting incorrect mime type for css files

  - by Becky

  We have a VPS server that we host our websites on. I have written a CMS using CodeIgniter. On one of the interfaces, I am attempting to upload a css file to the system. This worked correctly when we had it hosted on shared hosting. Since we've moved it to the VPS, I am getting an "incorrect filetype" error. It all comes down to the fact that the server is reporting a mime type of text/x-c for the css file rather than text/css. I logged in via shell and ran the following command on an existing valid css file (to make sure it wasn't an issue with either CodeIgniter or with php). file --brief --mime 'filename.css' 2>&1 The server gave me the following in response to my command: text/x-c; charset=us-ascii My question ... is there some sort of server setting that I need to tweak to get the server to correctly identify the css file as text/css? Do I just have to add a mime type for the css files to the server? I found the mime types file (etc/mime.types), and it just hase video types and a couple other that I have no idea what they are. There is nothing in there for css or images or html files. Unless I'm looking in the wrong spot. I'm not a server person, so I'm hoping someone can help me out. Some server specs: Apache/2.2.22 (Unix) php 5.3.13 Server API = CGI/FastCGI the fileinfo php extension appears to be disabled

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• Moving domain and keeping IMAP email - Linux Evolution, Mac Mail

  - by Douglas Squirrel

  This question is about keeping email during a server move, where the clients are Linux (me) and Mac (my wife) using IMAP. I receive email at [email protected] using a webmail service that my hosting company (1and1) provides. I read it via IMAP in evolution, so I should have copies of all the emails on my local machine. I have just moved mydomain.com from one type of account to another, and the hosting company don't move my existing email on the server when I do this - I assume they move my account to a different mailserver, and don't choose to provide a migration path for the email to move too (yes, this is annoying). Before migrating, I backed up Evolution (File - Backup settings) and did a spot-check in the evolution-backup.tar.gz file to be sure that my mail was in there. After migrating, I restored (File - Restore settings) and had hoped that I would see all my mail again. Unfortunately, Evolution just shows me new mail sent to the account, not the old mail. Is there a way to get the old mail back in the mailserver, or at least displaying in Evolution, as it was before the move? If not, can I read it in some convenient way, e.g. in Evolution offline or in a text file (then I can pick the mails I really want to keep and resend them to myself)? Also, I am about to do a similar move for my wife's domain, [email protected]. She reads her mail on a Mac using IMAP to Apple Mail. Is there anything I can do to make the move smooth for her? (I have backed up [her user]/Library/Mail already, but not sure what to do once the move is done.)

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• Can't get an IBM xSeries 345 server to load Windows Server 2003 using ServerGuide utility

  - by Kyle Noland

  I have a client that has an IBM xSeries 345 eServer. Per the IBM support website, I have downloaded the ServerGuide Setup 7.4.17 installation ISO and burned a bootable CD. The CD boots fine and loads the utility. I walk through the following screens without any issue: Set the date and Time Detect the IBM ServeRAID card and install the latest firmware Clear the hard disks Set up the RAID array The next step is format the NOS partition. I select my partition size and the utility goes through the following steps: Creating NOS partition Formatting NOS partition (NTFS) Copying W32 files The copying W32 files takes about 10 minutes. I see the CD drive and disks working hard. When the copying is complete, I'm taken to a blank page just NOS Partitioning at the top. At the bottom of the screen are the familiar Back and Exit buttons. I see the place where the Next button should be, and if I click on it I can tell there is something there, but the space is empty. No button is displayed and clicking the empty spot doesn't ever take me to the next screen. I can't load the OS until I get past this part. I have already tried: Burning multiple copies and versions of the ServerGuide CD Letting the final screen just sit there over the weekend thinking it might advance after syncing the drives or something Has anybody else seen this? I'm really at a loss here.

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• httpd Redirect / Rewrite .com to .org

  - by David W

  I am trying to redirect a www.example.com to www.example.org. I cannot figure out what I'm doing wrong. I have ensured that mod_rewrite is enabled in httpd.conf with: LoadModule rewrite_module modules/mod_rewrite.so I further verify this by running: httpd -M and getting rewrite_module (shared) included in the results. Later in the same httpd.conf file is the VirtualHost directive where I am trying to perform the rewrite: <VirtualHost *:80> Options +FollowSymlinks RewriteEngine On RewriteCond %{HTTP_HOST} ^example.com [NC] RewriteRule ^(.*)$ http://www.example.org/$1 [R=301,NC,L] ServerAdmin [email protected] DocumentRoot /var/www/html ServerName example.org ServerAlias www.example.org *.example.org <Directory "/var/www/html"> Options Includes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> ErrorLog /var/www/logs/error_log CustomLog /var/www/logs/access_log common </VirtualHost> As we can see, we are following SymLinks in the directory (which I believe is a requirement), AND we allow All Overrides (which meets another requirement). But obviously I'm still doing something wrong. Can you spot it?

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