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  • Java Swing over Remote Desktop - Strange, weird GUI squashing

    - by ADTC
    I thought this question fits SuperUser more than StackOverflow because it's not about actual Java programming, though programmers might be more likely to encounter the problem. Anyway, let me start of with some stats before I ask the actual question: Laptop: Windows 7 x32 Screen resolution 1024 x 768; Nvidia GeForce Go 6200 Connected to desktop via ad-hoc wireless network Access internet via desktop Desktop: Windows 7 x64 Screen resolution 1920 x 1080 Connected to laptop via ad-hoc wireless network Access internet via cable modem I'm connecting to my laptop via Remote Desktop from my desktop to take advantage of the large screen. I'm doing programming on my laptop (for portability reasons). Everything else runs smooth and fast over Remote Desktop as both computers are connected directly over the ad-hoc wireless. The only problem is this: Java Swing apps don't display the GUI properly. I acquired a Java Swing application and I'm debugging it in Eclipse. Here's what I got when I ran the app: Apparently there doesn't seem to be anything wrong with the GUI application I'm debugging, because the Java Control Panel exhibits the same problem. I've searched high and low in Google about this; the closest I came to a solution is this. But sadly, the use of -Dsun.java2d.nodraw=true has no effect at all. This only happens over Remote Desktop. I have tried locally and the GUI apps display properly. This isn't a dealbreaker for me as I can stop using Remote Desktop when developing Java Swing apps. However, I would like to know if anyone has encountered this and found any solution. PS: All software involved (Eclipse, Java JRE, etc.) are latest versions.

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  • How to configure VirtualBox server for performance at home

    - by BluJai
    I currently have two physical Ubuntu Server 10.10 servers at home: one serves as our firewall/router/DHCP/VPN server and the other performs double-duty as a file server and a VirtualBox host for an Ubuntu Desktop 10.10 machine which I use from remote connections (via NoMachine) for many thin-client purposes which are irrelevant to my question. What I'd like to accomplish is to consolidate the two physical machines into one which is a dedicated VirtualBox host (most likely running Ubuntu Server 10.10). Note that I'd like to stick with VirtualBox (if possible) because I'm most comfortable with it and use it on a daily basis at both home and work. Specifically, I plan to have one VM set up as file server, another as the firewall/router/DHCP/VPN (or possibly split those a bit) and a third, which is the only current VM (already VirtualBox), which is the thin-client host. My question comes down to performance and/or recommendations about the file server VM. The file server hosts about 6 terabytes of data across 4 drives. What I'd like to do is use raw disk access from the VM directly to the existing disks. However, I'm curious what performance advantage/disadvantage that would have as compared to using shared folders from the VM host and basically just have the whole drive served as a shared folder to the VM which would then serve it to the other machines on the network. I don't know if virtual disks would even work in this scenario and I certainly wouldn't want a drive to be filled with just a single file which is 1.5 TB (disk image). To add understanding of context, but not to get additional advice, I want to virtualize these machines because I intend to regularly use the snapshot capabilities of VirtualBox for the system disks (which will be virtual drives) of the VMs and I have some physical space/power needs to address (as I mentioned, this is at home).

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  • How expensive to run PC 24/7 or how to figure out how to determine it?

    - by jasondavis
    I realize this question is difficult to answer as it would be different based on users location, what there PC is doing and what hardware it consist of, along with other factors but I am hoping someone could give me a very rough estimate. I have always ran many PC's in my home 24/7 and I am just now looking at it from a money/cost of electric point of view. 1) I live in Central Florida. Can anyone guesstomate/estimate the avaerage monthly or daily cost of running your average PC? Intel quad core processor, 1 SSD drive for OS and programs and 4-5 1-2 TB hard drives in a RAID setup for data. 750watt PSU. What would your guess be? 2) Also is there an accurate way to figure this out (non-super technical and confusing to a non-math person please) Also I have seen those kill-a-watt devices, do they figure this kind of stuff out for you? 3) Does a larger PSU make your PC consume more power? Thanks for any help, you can most likely tell I am somewhat lost about this!

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  • Tomcat deployment overwrites context.xml

    - by Kristoffer
    Hi, I'm pretty new to Tomcat in general, so please point out if got anything wrong. My question is regarding updates to already deployed apps, using the Tomcat manager. But first thing first. I'm using the META-INF/Context.xml for storing connection info for the database connections, so this is unique to every server the application is deployed to. I'm not sure if this is optimal but it's the only way I know. So, when updating the application, it's important that this file doesn't get modified, because I don't want to have to go in and remake all changes every time I update my app. For updating, I'm using the Tomcat Manager, and I've tried different approaches but everything seems to build on the process of undeploy, then deploy the new version. This way, the Context.xml gets removed/replaced by an empty Context.xml file. So my question is basically, how do I update a running webapp, and at the same time having the Context.xml left untouched? Btw, I'm running Tomcat 6.0.24.

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  • Parallel Environment (PE) on Sun Grid Engine (6.2u5) won't run jobs: "only offers 0 slots"

    - by Peter Van Heusden
    I have Sun Grid Engine set up (version 6.2u5) on a Ubuntu 10.10 server with 8 cores. In order to be able to reserve multiple slots, I have a parallel environment (PE) set up like this: pe_name serial slots 999 user_lists NONE xuser_lists NONE start_proc_args /bin/true stop_proc_args /bin/true allocation_rule $pe_slots control_slaves FALSE job_is_first_task TRUE urgency_slots min accounting_summary FALSE This is associated with the all.q on the server in question (let's call the server A). However, when I submit a job that uses 4 threads with e.g. qsub -q all.q@A -pe serial 4 mycmd.sh, it never gets scheduled, and I get the following reasoning from qstat: cannot run in PE "serial" because it only offers 0 slots Why is SGE saying "serial" only offers 0 slots, since there are 8 slots available on the server I specified (server A)? The queue in question is configured thus (server names changed): qname all.q hostlist @allhosts seq_no 0 load_thresholds np_load_avg=1.75 suspend_thresholds NONE nsuspend 1 suspend_interval 00:05:00 priority 0 min_cpu_interval 00:05:00 processors UNDEFINED qtype BATCH INTERACTIVE ckpt_list NONE pe_list make orte serial rerun FALSE slots 1,[D=32],[C=8], \ [B=30],[A=8] tmpdir /tmp shell /bin/sh prolog NONE epilog NONE shell_start_mode posix_compliant starter_method NONE suspend_method NONE resume_method NONE terminate_method NONE notify 00:00:60 owner_list NONE user_lists NONE xuser_lists NONE subordinate_list NONE complex_values NONE projects NONE xprojects NONE calendar NONE initial_state default s_rt INFINITY h_rt 08:00:00 s_cpu INFINITY h_cpu INFINITY s_fsize INFINITY h_fsize INFINITY s_data INFINITY h_data INFINITY s_stack INFINITY h_stack INFINITY s_core INFINITY h_core INFINITY s_rss INFINITY h_rss INFINITY s_vmem INFINITY h_vmem INFINITY,[A=30g], \ [B=5g]

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  • Should one have a separate user account for work use? [closed]

    - by Tyler Wayne
    This question examines the practice of using a separate OS-level user account to divide work use from personal use (specifically, in a creative profession and on a personal computer). I recently left my in-the-flesh job to go to school, but I'm carrying on with the work remotely. I do all of my work on my laptop, and I currently have a separate user account called "Work" where I do exactly that. However, I'm now starting to question that practice. Because my hobby is the same as my job, I want to save notes of the things I learn while working. Because ideas come at any moment, I often want to throw something into my personal task manager's inbox and look at it again later. That task manager is well-suited to handle both the work and personal aspects of my life. Only my personal account has admin rights, but work sometimes requires me to install programs. My employer has no preference regarding my choice, so that is a non-issue. My work is essentially freelance web development, so advice given with that in mind will be much appreciated. Back up all opinion with some personal experience, please. Ideally, give a list of pros and cons and then name reasons for your position.

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  • PC only boots from Linux-based media and won't boot from DOS-based media

    - by xolstice
    I have this problem where the PC only seems to boot from a floppy disk or CD if it was created as a Linux-based bootable media. If it was created as a DOS-based bootable media the system just freezes at the starting point of the boot process. I originally asked this under question 139515 for CD booting only, and based on the given answers, I was under the impression the problem was with the CD-ROM drive; however, I have since installed a newly purchased CD-ROM drive and the same freezing occurs. This then made me try the DOS bootable floppy disk approach and I was quite surprised that it exhibited the same freezing problem. I then tried try a Linux bootable floppy and everything booted from it without any issues. As I mentioned in my original question, the PC was booting just fine from the DOS-based bootable CD, and then it suddenly decides to pull this freezing stunt. I can't remember if I changed anything in the BIOS settings that may I have caused the problem, but I am wondering if that could be the case - it is currently using the Award Module BIOS v4.60PGMA. Can anyone help?

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  • How to configure VirtualBox server for performance at home

    - by BluJai
    I currently have two physical Ubuntu Server 10.10 servers at home: one serves as our firewall/router/DHCP/VPN server and the other performs double-duty as a file server and a VirtualBox host for an Ubuntu Desktop 10.10 machine which I use from remote connections (via NoMachine) for many thin-client purposes which are irrelevant to my question. What I'd like to accomplish is to consolidate the two physical machines into one which is a dedicated VirtualBox host (most likely running Ubuntu Server 10.10). Note that I'd like to stick with VirtualBox (if possible) because I'm most comfortable with it and use it on a daily basis at both home and work. Specifically, I plan to have one VM set up as file server, another as the firewall/router/DHCP/VPN (or possibly split those a bit) and a third, which is the only current VM (already VirtualBox), which is the thin-client host. My question comes down to performance and/or recommendations about the file server VM. The file server hosts about 6 terabytes of data across 4 drives. What I'd like to do is use raw disk access from the VM directly to the existing disks. However, I'm curious what performance advantage/disadvantage that would have as compared to using shared folders from the VM host and basically just have the whole drive served as a shared folder to the VM which would then serve it to the other machines on the network. I don't know if virtual disks would even work in this scenario and I certainly wouldn't want a drive to be filled with just a single file which is 1.5 TB (disk image). To add understanding of context, but not to get additional advice, I want to virtualize these machines because I intend to regularly use the snapshot capabilities of VirtualBox for the system disks (which will be virtual drives) of the VMs and I have some physical space/power needs to address (as I mentioned, this is at home).

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  • How can I systematically shut down Windows services in order?

    - by cbmeeks
    We have this open source application that has three (3) services. For the purpose of this question, let's call them A, B, and C. Now, they have to be shut down in a specific order. That order would be A then B then C. If B shuts down before A then we run into all kinds of problems. Same is true if C shuts down before B or A. Plus, each service can take a different amount of time to shut down due to how many users were using it. Oh, this need to be wrapped up in a DOS batch file or something a non-techy user could just double-click to initiate. (PowerShell is not out of the question but I've never used it). Also, I'm a C# coder so that could be used too. Anyway, when the restart is initiated the following needs to happen: 1) Initiate shutdown of service A 2) When service A is down, it should trigger the shutdown of service B 3) When service B is down, it should trigger the shutdown of service C 4) When service C is down, it should trigger the START UP of service A 5) When service A is UP, it should trigger the START UP of service B 6) When service B is UP, it should trigger the START UP of service C So as you can see, each stop/start needs to wait on the previous to be completely finished before moving on. And since each service can take a few seconds to a few minutes, we can't use any kind of timing tricks. Suggestions greatly appreciated. Thanks!

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  • Hard drive not correctly recognized on a new Windows 7 installation, but works correctly on Windows XP

    - by david
    I'm having problems configuring a hard disk in a brand new, clean Windows 7 installation. System specs: Hard disk: WD VelociRaptor WD6000HLHX (600 GB, 10000 RPM) Motherboard: Gigabyte Z77X-UD3H BIOS SATA mode set to AHCI (not RAID), with disk connected to SATA0 (6 Gb/s port). Windows 7 Enterprise SP1 64-bit The disk is recognized by the BIOS and is correctly identified, with the name and size correctly reported. Windows recognizes the disk itself and reports the device is functioning correctly, but it doesn't appear in Explorer. Disk Management shows the drive, but incorrectly states that it is uninitialized and has no partitions. If I try to initialize the drive, I get an error saying that "the system cannot find the file specified" (what file?). Before connecting the drive to the new machine, I partitioned and formatted it under Windows XP SP2, creating 2 partitions (MBR, not GPT) and copying over a boatload of data. However, none of this data appears under Windows 7. If I put the disk back into the Windows XP machine, I can access the disk and all of its data. Is it possible to get Windows 7 to correctly recognize the disk without having to erase it and start over? If so, how do I do so? I checked this question, which seems to cover the same issue, but it didn't help.

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  • Why is a FLAC encoded from a decoded MP3 bigger than the MP3?

    - by Ryan Thompson
    To be more precise than in the title, suppose I have a MP3 file that is 320 kbps. If I decompress it, then logically, all the data except for roughly 320 kilobits out of each second of audio should be redundant data, able to be compressed away. So, when I encode the decompressed file to FLAC, or any other lossless codec, why is it so much larger? On a related note, is it theoretically possible to losslessly recover the source mp3 audio from a decompressed wav? (I know the mp3 itself is lossy. I'm asking if it's possible to re-encode without any further loss.) EDIT: Let me clarify the related question, and the rationale behind it. Suppose I have a wav that was decompressed from an MP3 file (and assume I don't have the mp3 itself for some reason). If I don't want to lose any more quality, I can re-encode it with FLAC or any other lossless encoder and get a larger file just to maintain the same quality. Or, I can re-encode it to mp3 again and get the same size as the original but lose more data. Obviously, neither of these cases is ideal. I can either have the original size or the original quality, but not both (I mean the quality of the original mp3, not the original lossless source). My question is: Can we get both? Is it theoretically possible to recover the lossy compressed data from the lossy decompressed data, without losing even more? If it is possible, I could imagine a lossless compression algorithm that compresses the audio with FLAC. Then it also scans the audio for any signs of previous lossy compression, and if detected, recompresses it losslessly to the original lossy file. Then it keeps whichever file is smaller.

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  • Which internet scenario would be better?

    - by JL
    I currently have an 8mbps (down) / 512kbps (up) telephone ADSL solution. I must say the reliability is excellent, and up until now its been the fastest connection I could get because I don't live in a cable zone. The real speed of my connection is around 7mbps, but sometimes I manage to get the full 8mbps. I use my connection for work, so it needs to be at least 99% reliable. Recently I was told by a guy who lives up the road that he has a wireless connection with an external antenna and his speeds are 20mbps / 512kbps - he's also paying about 1/2 of what I pay for my wired telephone connection. My question is, is wireless internet good enough for a power user who uses his connection for work 8 hours a day, including VPNing into servers remotely. Besides this I also enjoy playing the odd network game, not a WoW freak, but sometimes I do pick up the odd MMORPG and at times do indulge in some semi heavy gaming sprees. Will this wireless latency drive me crazy and seem slow in comparison? Will it be reliable enough, I also live in an area that snows heavily in winter. I guess its a question of - should I go wireless or not. I've only had 1 wireless connection before and that was years ago using iBurst technology and I remember it was terrible for VPN, but I guess the technology might have been improved since then? What do you guys think?

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  • Is this a File Header / Magic Number?

    - by Hammer Bro.
    I've got 120,000 files (way more, actually; this is just an arbitrary subset) of an unknown type. Linux file does not identify them (not that they're necessarily Linux files), nor do any other methods I've tried. There are only two hints about them that I currently have. One is that I suspect some compression is employed -- I have metadata that claims the file sizes are always some amount larger than what I observe. The other is that in 100,000 of these files, the first 16 bytes are always: ff ee ee dd 00 00 00 00 01 00 00 00 00 00 00 00 That really looks like a file header/magic number to me, but I just can't place it. Does anyone know what kind of files this would indicate? Alternatively, can anyone convince me that these suspiciously common bytes certainly do not indicate a specific file type? UPDATE I don't know the exact reverse-engineering details, but most of the files in our case are zips after the first 29(? or so) bytes are ignored. So in practice the problem is solved (we know how to process the files) but in theory the question is still unanswered -- I don't know which application routinely prepends about 29 bytes to its zips. [I'm not sure if I should leave the question open or not at this point.]

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  • What does a DHCP-client consider to be the "best" answer?

    - by Nils
    We have training rooms where normally Windows XP is installed (via PXE). The "normal" DNS/DHCP infrastructure are Windows-Servers. The training room has its own VLAN (different from the Windows servers), so there is most propably an IP helper for DHCP requests active on the Cisco router where all PCs from that room are connected to. Now we wanted to convert some of the PCs to Linux instead. The idea was: Put our own Laptop with a DHCP server into the VLAN of the room and override the "normal" DHCP response. The idea was that this should work, since a directly attached DHCP server in that VLAN should have a faster response-time than the "normal" DHCP server located some hops away from that VLAN. It turned out that this did not work. We had to manually release the lease on the original DHCP server to get it working. On the Laptop we did see the client requesting the IP and "our" dhcp was sending NACKs to the Windows IP request, before that we did offer our own response. Old Question: Why did this not work out as expected? What is making the PC regain its old lease? Update 2012-08-08: The regain-issue has been explained in the DHCP-RFC. Now this explains why the PC regains its old lease. Now we do release the IP from the Windows-DHCP-server before giving it another try. Again - the Windows-DHCP-server wins. I suspect that there is some algorithm for the dhcp-client which determines the "best" dhcp-answer for the client. The new question is: How does the client choose the "best" answer?

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  • AutoHotkey - Organizing hotkeys so as to use Several hotkeys optimally

    - by Stenemo
    My question is how to structure key combinations in script below most effectively using AutoHotkey. Having searched for exactly how to do this for hours I figured I should post here so others can at least find this solution if they are trying to do the same: http://www.autohotkey.com/board/topic/90013-solved-wasd-fna-left-fnalta-home-fnctrla-ctrl-left-etc/ and How to combine three keys as a hotkey with Autohotkey? My Question is how to use this method most effectively, and is not answered in those threads. My idea would be to use this for everything related to up (etc), e.g.: ; Up Combinations: Ctrl Up, SHIFT + Up, SHIFT + Ctrl Up, [Alt/win + Up easily added and organized using this system] CapsLock & w:: GetKeyState, stateCtrl, LCtrl GetKeyState, stateShift, LShift GetKeyState, stateWin, LWin GetKeyState, stateAlt, LAlt if stateCtrl = D if stateShift = D if stateWin = D Send ^+#{Up}; Ctrl + SHIFT + Win + Up else Send ^+{Up} ; Ctrl + SHIFT + Up else if stateWin = D Send ^#{Up} ; Ctrl + Win + Up else Send ^{Up} ; Ctrl Up else if stateShift = D Send +{Up} ; SHIFT + Up else if stateWin = D Send #{Up} ; Win + Up else if stateAlt = D Send !{Up} ; Alt + Up else Send {Up} ; Up return Also, if there is a better way to do this, that would be great. E.g.: *CapsLock & w:: send {Up} Does almost exactly the opposite of what I want (sends up even if other modifiers are held down). When I hold e.g. control at the same time, I want it to do control + up. Have I missed such a AutoHotkey command? If anyone has a better way to do this that would be great.

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  • Computer Comparison - which is "better"

    - by David Murdoch
    A company I work with recently replaced their old server and gave it to me. Their old server is a Dell PowerEdge 2600. I've been playing with the machine and even installed Windows Server 2008 on it...and it seems to run it pretty well. Here are the specs for the two machines: Dev Machine: AMD Athlon64 3000+ 2.38 GHz (overclocked from 1.8GHz [@ 280x8.5] - it is stable-ish) Memory (RAM): 1x1GB OCZ PC3200 (Dual-Channel) 300GB HD OS: Windows XP Pro (32bit) SuperPi 1M digit test: 40 seconds Dell PowerEdge 2600 Server: Intel Xeon CPU 2.8GHz 2.8GHz Memory (RAM): 512MBx2 (PC2700, not dual channel) 68GB HD (RAID 5) OS: Windows Server 2000 (32bit) SuperPi 1M digit test: 56 seconds [using 1 processor] (Themes and Aero-Flass UI turned off, of course) I use my computer to regularly run Photoshop CS5, Illustrator CS5, Flash CS5, 5 browsers (Chrome, FF, IE, Safari, Opera), iTunes, Visual Studio 2010, and Kaspersky Internet Security 2010 [sometimes simultaneously :-) ]. The SuperPi test has my dev machine coming in about 30% faster than the Server machine...though this could be due to the server running "Vista" with background processes prioritized. Do you think it would be realistic/advantageous for me to move from my dev machine to the Dell PowerEdge 2600? Is it possible to install additional DVD drives/burners on the server? Can I install my internal 300 GB hard drive on the server? Can I add some USB 2.0 ports? Note: I'll probably install Win XP Pro on the dev machine if I do switch. If not, are there any creative and useful way for me to take advantage of this server (with the goal of faster computing)?

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  • apache 2.4, mod_proxy_fcgi not honouring .htaccess, work around needed

    - by user229874
    I am using apache 2.4.7 with mod_proxy_fcgi for purpose of passing through php to php-fpm (this will be used for shared hosting environment). The htaccess works fine for non php files, but once it hit rewrite rule that proxies through the php requests, the htaccess is ignored. I know why it is happening. The question is: how do I work around it? The question how do I force apache to treat the request to php file as a request to local file, and then proxy it through? I have spent substantial time in researching on this problem, and following "answers" were given as solution: 1) "use apache configuration instead of .htaccess" it is valid solution, but not for shared hosting environment (I am not going to give access to apache configuration to shared hosting customers ;)). 2) "don't use .htaccess, as it has performance/security/other issues", well how else would shared hosting customers control access/url rewriting on their site? Besides if the .htaccess was not a requirement I would simply use nginx. 3) "put rewrite rule for proxy inside of " - this is incorrect, and it does not work. This behaviour appears to be not a bug but a "feature" as per https://issues.apache.org/bugzilla/show_bug.cgi?id=54887

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  • Cache updates when migrating DNS from one provider to another

    - by JohnCC
    This may be a Windows DNS specific question or a general DNS best practice question - I'm not sure! We migrated our 3rd party DNS provision from provider A to provider B. I noticed that our internal recursive windows DNS servers still had NS records cached for our domains pointing to provider A's servers, even though I changed the nameservers with our registrar several days ago, and even though selecting the properties of the cached records showed a TTL of 1 day. After 24 hours when the NS records in this cache have expired, will the DNS server go back to the TLD server for an update on the authority, or will it go by preference to dns1.providera.com since that is what it has cached? In this case I arranged to leave Provider A's servers up for a week to allow changes to propagate, so dns1.providera.com is still active and would still provide NS and SOA records that said that dns1.providera.com. was in charge of this domain. Given this fact, would the Windows DNS server ever go back to the TLD and pick up the authority changes, or would it just assume all was well and renew timestamps on its cached NS records? I wonder what would be the best approach to ensuring that caches pick this up. Should I:- (1) Leave Provider A's servers in place and active and wait for caches to catch up ... basically what we're doing now which seems to have issues - perhaps specifically for Windows servers, or perhaps more widely. (2) Leave Provider A's servers in place but change the NS and/or SOA information they provide to tell caches that new servers are in charge. (3) Remove Provider A's servers after 2*TTL to force remaining caches to update. The issue with (2) is that on Provider A's system I can't seem to change the NS or SOA information to anything other than their servers. The issue with (3) is that I'm not sure how a DNS server would behave in this case. When it couldn't reach the cached name servers, would it flush its cache and try a full recursive lookup, or would it just return an error, forcing the user to clear the cache manually? Thanks in advance!

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  • Virtualbox - differencing disk based on different differencing disk

    - by Klinki
    I'm trying to create differencing image based on differencing image in VirtualBox 4.2.18. Official documentation says it should be possible: http://www.virtualbox.org/manual/ch05.html#diffimages Basically I want to achieve this drive hierarchy: + immutable image with Debian and all software installed +---- differencing image with specific configuration, autoreset=off, readonly +-------- differencing image with autoreset=on +---- another differencing image for different virtual machine +-------- differencing image with autoreset=on I successfully created differencing image based on differencing image, but I'm not able to connect it to virtual machine :( It always shows error: Failed to open the hard disk .... cannot register hard disk ... because hard disk with UUID ... already exists Here is screenshot of Virtual Media Manager and error dialog Virtual Media Manager Window screenshot Very strange is that the new differencing image (tempdrive.vdi) doesn't have Actual Size 0. I wasn't able to connect it, but still, it has 36KB of data on it... This is very similar to this older question: How to create a chained differencing disk of another differencing disk in Virtual Box? but suggested solution is not working anymore in VirtualBox 4.2.18, so I posted it as a new question. (Limit for posting links and screenshots is quite annoying..)

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  • ADO 2.8, VMWare and SQL Server - sudden bulk dropped connections

    - by CodeByMoonlight
    We have an overworked server currently running a single SQL Server 2000 instance on physical hardware, and about 40 different apps interact with it on a daily basis. Last year, the RAID controller failed and we had no spare, so IT Support hurriedly migrated it overnight to a copy running on a VMWare Server. While it was on that server everything ran much quicker due to it being a big improvement in spec. However, the biggest app using it had occasional serious errors which never occurred on physical hardware. Specifically, several times a week it would disconnect batches of users - anywhere from just ten to hundreds at once, and all at the same time. It didn't affect any particular users or PCs or offices - all were affected equally. The only common thing was the app, which is a VB6 app using ADO 2.8 to connect. The other apps connecting to that virtualised instance of SQL Server seemingly had no problems, although they were (and are) responsible for only a tiny fraction of the work involving this server. The upshot is that after about two weeks of loving the speed and hating the random mass disconnections (which we were never able to find a cause for), we sadly took the decision to return to physical hardware and the disconnections vanished. Now we've reached the point where the old server just can't handle all that's being asked of it, and we're intending to migrate everything to 2 or more other servers. The snag is that there's a good chance they'll have to be virtual ones again. Given what happened last time, I'm trying to find out what possible reasons there could be for these mass disconnections. We were running VMWare ESX, but the network is Novell-based. Also, the server had a linked server setup to connect to an Informix server using a known-to-be-buggy ODBC driver, and this is used throughout the day. Any ideas on the cause(s)?

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  • How to setup Mac server to use two gateways

    - by Brady
    I recently asked this question: How to set Mac server to use different Gateway for internet bound traffic The answer given works but has presented me with another issue that I didnt make clear in that question. Here is my network layout as it stands: At the moment outside staff members use some services on the existing internet 1 link. Those services are hosted by the Mac server. If I change the gateway of the Mac server to the second modem those outside staff lose visabilty on those services. Now I dont know how to go about solving this issue. I want the second link to be used when the Mac server goes to rsync data offsite but everything else use link one. How do I do this? Thanks Scott EDIT: This has been resolved by setting the default gateway on the Mac server to 192.168.1.254 Thus leaving everything on the network as it was before. but to get the Mac server to use the other link for rsync I've added a route to the Mac server to route traffic to the rsync server through the second gateway. sudo route add -net {server IP's}/{Netmask} 192.168.1.1 I've awarded the answer to gravyface for pointing me to a post on how to make this route persistant in Mac

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  • Why a 10 years old software still is so slow even today?

    - by Cawas
    I just noted this question due to a game (which happens to be Diablo 2), but the matter of fact is: why is my brand new mac book pro, made in 2009 with latest technology (tho it's the cheapest one) can't rival my computer which used to run this much faster back in 2000? Really, it was much faster on my AMD K6 450 back in those days, and I could even run two clients at same time with no slow down. I've always had the feeling this machine was slow, but this is a very odd way to attest it. Granted, the machine is smaller, runs on wifi and "boots" way faster thanks to sleep mode. But other than that, what have we evolved after all?! I'm pretty sure this shouldn't be graphical card's fault. Sure if I buy latest technology it will run fast, and probably most people here can confirm this and won't even understand my question. But the thing is, all the hardware is supposedly much faster and better than the stuff from 10 years ago. The software and operating system became more complex, but also more well refined. Now I'm trying a piece of software that is actually 10 years old and it's not getting any better results! Why?

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  • How to use DNS/Hostnames or Other ways to resolve to a specific IP:Port

    - by tomaszs
    This is a Canonical Question about DNS/Hostnames resolution to IPs/Ports Example 1 I'm running a web server on port 80 and another on port 87. I would like to use DNS so that www.example.com goes to port 87. How can I accomplish this using DNS only? Example 2 I'm running a service on my server on a non-standard port. How can I get clients to connect to this non-standard port automatically? Can I use DNS? Is there some application specific support where DNS could indicate the IP and Port? Example 3 Do some application protocols specifically support hostname awareness, and allow special actions to be taken based on this information? Are there other questions on Server Fault that cover some of these? Commandeering: This question was originally asking about running IIS and Apache on the same server, but the same concepts can be applied to any server software receiving connections from clients. The Answers below describe the technical problems and solutions of using DNS and application protocol support to assign a port number for a client to connect.

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  • Why can't I specify the executable that opens file with extension on windows?

    - by Glen S. Dalton
    I am on windows server 2003, but I guess it is the same on windows xp. This is a superuser question, because it is definitly desktop, so do not move or close it. Question: I copied some movable applications (usually people create them for usb sticks) to locations like c:\bin\app1\app1.exe app1.exe can open files of type *.ap1 When I rightclick file.ap1 and choose "open with ..." the "Open with" dialog appears. But it is not working how I expect in this situation. I can choose c:\bin\app1\app1.exe with the "Browse" button, but: app1.exe will not appear in the dialog where I just choosed it in the programs list, like I am used to it after clicking OK on it in the browse dialog. app1.exe will not open it when I click ok in the "Open with" dialog, the application that was assigned until then will still open it What could be the reason? Edit: Additional Information: my account is member of the administrators group I just changed the permissions of the folder c:\bin\app1\ and made sure that the group "Administrators" has all rights. I also inherited this manually to all subfodlers and subfiles.

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  • SSL stops working on IIS7 after a reboot

    - by Mark Seemann
    I have a Windows 2008 Server with IIS7. Every time the server reboots, SSL stops working. Normal HTTP requests work fine, but any request to an HTTPS address gives the typical error message in the browser: Cannot find server or DNS I can temporarily fix it by opening IIS Manager and bring up the Bindings… window for the website in question. Then I select “https”, click on “Edit” then click “Ok” without making any changes to the settings. After doing this, browsing to https:// works again until the next reboot. This issue look as lot like the one described here, but according to the Certificates MMC snapin, the certificate in question does have a private key. I'm also pretty sure that I never installed the certificate in the personal store, but imported it straight into the machine store, but it's been a while... There's not a lot in the event log apart from the event ID 36870 also described in the post I linked to. Can anyone help me troubleshoot this issue so that SSL will work even after a server reboot?

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