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  • High disk time on sql-server

    - by Patrik
    Hi We have a dedicated sql-server 2008 r2 enterprise edition. The setup is: D: (data files) - stored on local ssd disks (not the same disks as log files) (raid 10) E: (log files) - stored on local ssd disks (not the same disks as data files) (raid 1) F: (transaction log backup) - stored remote on a SAN Today we moved our log files to new disks (from F: to E:). From a shared volume ( F:(SAN)) to dedicated local disks (E:). What then happend was that the "disk time", "avg. transfer time" and "avg disk write queue length" increased on the volume where we have the data files (D:) (not on the volume where the log files are located). The data volume and log volume does not share disks, however they share the same controller card. "Disk idle time" is low for all volumes. One thought is ofcourse that the controller card might be overloaded. But, we need more ideas on where the problem might be.

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  • Windows Server 2008: Limit UDP/TCP packets per IP or ban

    - by WBAR
    How I can limit UDP/TCP packets per IP send to my host (or better PORT) per second or minute ? Would be nice to ban that IP for 12/24 hours or even for ever. I got Windows Server 2008 and I'm very poor in Windows administration but quite good in Linux. EDIT: By basic problem is that They sending a lot of rubbish UPD and TCP packets.. TCP packets without SYNCH, fragmented UDP packets so my servers stop responding.. So I need to cut off users (IPs) sending more than X packets per second. I need solution witch provides me, somehow, configurable: X packets of certain type (UDP, TCP or both - lets say parameter named Z ) are allowed to be received by IP on Y port, otherwise this packet should be DROPPED. My virtual hosts are hosted by VirtualBox and I'm able to forward all incoming packets certain type and certain port to the specific Virtual Host, but I need to DROP them before my VirtualBox receive them.

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  • Updating AFP version on Windows Server 2003

    - by Niclas Lindqvist
    Hi, We have a couple of Macs, running Leopard and Snow Leopard in our otherwise pure Windows environment. We cannot get file names longer than 31 characters and some times the file permissions gets scrabbled (users can't delete their own folders or access files they usually access). This only occurs when connecting through AFP, We've tried with SMB but it's horribly slow when working with larger documents, so it's not an option. I somewhere read about AFP 3.0 being the answer. So my question is: Is there some way of updating my "AFP version" on Windows Server 2003, or does anyone have a different idea of what might help to resolve this situation?

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  • Network Server Cabinets - How does the ventilation work?

    - by Nicholas
    Recently I've been looking at a range of network server cabinets with a mesh door at the rear. At the top of the cabinet are ceiling mounted fans with dust filters attached. These fans suck air out of the cabinet - presumably to remove the hot air that has risen to the top. My question is why do these fans have dust filters? What point do they serve? If the air flow is pulled in by these fans through the mesh door, then surely they are not there to protect the hardware inside from dust? Also, there are other minor grilled gaps around the enclosure, how does this kind of ventilation design work?

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  • Timeouts when connecting to SQL Server since installing SP1 for Windows 7

    - by Julien
    Hi, I just installed SP1 for windows 7 and I have severe performance degradation when connecting to SQL Server 2005 since then. Establishing connection takes more than 30 seconds while it's instantaneous on another computer. Firewall is disabled and I didn't make any change to the configuration. It happens both when trying to connect with a hostname and with an ip address. Everything else seems to be fine (for instance, I'm have no issue connecting to other computers with remote desktop) What can cause such a problem? Thanks in advance! Edit : uninstalling the SP1 solves the issue instantly.

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  • Error when adding to the domain : the specified server cannot perform the requested operation

    - by James
    When we add computers to the domain in Windows 7, we get the error: Changing the Primary Domain DNS name of this computer to "" failed. The name will remain "domain.com". The error was: The specified server cannot perform the requested operation. This happens on multiple computers and retrying yields the same result. Despite the error, the computer is still able to login to the domain ok. The DCs are windows 2003. Has anyone found a way to get rid of this error? Any help is appreciated.

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  • Changing Administrator password on a Windows 2008 web server

    - by Nick
    I've just taken over the administration of a Windows 2008 web server from a previous employee on a temporary basis. I need to change the Admin password as soon as I can but I've noticed that quite a few of the services also run under this account. So: Is there a quick way to find out which services will be affected by me changing the password or is it a question of going down the list? It doesn't seem right to me that the Admin account is used in this manner; should I create a different account for these services, or is using the Admin a/c standard practice? I realize everyone's servers / networks are set up differently, but are there any other items I should be aware of when changing the Admin password? Thanks

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  • Kill Leaking Connections on SQL Server 2005

    - by Thierry Brunet
    We have a legacy ASP application that somewhere leaks SQL Connections. In Activity Monitor, I can see a bunch of idle processes with Last Batch times over an hour old. When I look at the T-SQL command batch, these are always FETCH API_CURSORXXX, which from my understanding is caused by improperly closed ASP ADO Recordsets. While we are try to pinpoint the offeding code, is there a way for me to monitor which requests open which cursors? I'm assuming profiler, but I'm not sure what I should be monitoring exactly. I can see a bunch of calls to sp_cursoropen but I don't see the API_CUSORXXX name anywhere. Second, would anyone be able to suggest a script we could run to kill these processes based on the Last Batch time 10 minutes and Last Batch Command being FETCH API_CURSORXXX? For various reasons, we unfortunately don't have any SQL Server DBAs.

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  • Still prompted for a password after adding SSH public key to a server

    - by Nathan Arthur
    I'm attempting to setup a git repository on my Dreamhost web server by following the "Setup: For the Impatient" instructions here. I'm having difficulty setting up public key access to the server. After successfully creating my public key, I ran the following command: cat ~/.ssh/[MY KEY].pub | ssh [USER]@[MACHINE] "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys" ...replacing the appropriate placeholders with the correct values. Everything seemed to go through fine. The server asked for my password, and, as far as I can tell, executed the command. There is indeed a ~/.ssh/authorized_keys file on the server. The problem: When I try to SSH into the server, it still asks for my password. My understanding is that it shouldn't be asking for my password anymore. What am I missing? EDIT: SSH -v Log: Macbook:~ michaeleckert$ ssh -v [USER]@[SERVER URL] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 53: Applying options for * debug1: Connecting to [SERVER URL] [[SERVER IP]] port 22. debug1: Connection established. debug1: identity file /Users/michaeleckert/.ssh/id_rsa type -1 debug1: identity file /Users/michaeleckert/.ssh/id_rsa-cert type -1 debug1: identity file /Users/michaeleckert/.ssh/id_dsa type -1 debug1: identity file /Users/michaeleckert/.ssh/id_dsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6+squeeze3 debug1: match: OpenSSH_5.5p1 Debian-6+squeeze3 pat OpenSSH_5* debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA [STRING OF NUMBERS AND LETTERS SEPARATED BY SEMI-COLONS] debug1: Host ‘[SERVER URL]' is known and matches the RSA host key. debug1: Found key in /Users/michaeleckert/.ssh/known_hosts:2 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /Users/michaeleckert/.ssh/id_rsa debug1: Trying private key: /Users/michaeleckert/.ssh/id_dsa debug1: Next authentication method: password [USER]@[SERVER URL]'s password: debug1: Authentication succeeded (password). Authenticated to [SERVER URL] ([[SERVER IP]]:22). debug1: channel 0: new [client-session] debug1: Requesting [email protected] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 Welcome to [SERVER URL] Any malicious and/or unauthorized activity is strictly forbidden. All activity may be logged by DreamHost Web Hosting. Last login: Sun Nov 3 12:04:21 2013 from [MY IP] [[SERVER NAME]]$

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  • Server 2008 R2 Datacenter (and all other version) not detecting hardware

    - by Mitchell Skurnik
    I upgraded my ASUS KFN32-D SLI/SAS motherboard to the latest BIOS version and swapped out the 2 dual-core procs with 2 quad core procs. After installing Server 2008 Datacenter onto the system I noticed that it was not connected to the network. I open device manager and see no network adapters. I have to go up to View - Show hidden devices to even see the virtual WAN Miniport adapters. This problem happens in Vista and Windows 7 (all x64). What is even stranger is it all works in x86 mode. What in x64 could be causing windows to not even detect hardware that works in x86? Is the boot manager possibly the culprit?

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  • Cannot install new certificate in IIS 7 on Windows Server 2008 R2

    - by Alex B.
    We are trying to renew our existing web site certificate on our IIS 7 site under Windows Server 2008 R2, but we continue to get the "Access is denied" error that others have posted. However, when we have gone to implement the common fix of making sure the Administrator group has full access to all folders and subfolders on the C:\ProgramData\Microsoft\Crypto\RSA folder, we get an "Access is Denied" error on changing those permissions. Yes, we are logged in as Administrator user - it just seems to not allow us to modify the group permissions to this folder. Help! We need to renew our certificate before March 2011!

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  • VMware Server guest systems are extremely slow with IO load on host (Ubuntu 8.04)

    - by Dennis G.
    We are experiencing performance issues with a VMware Server 2.x installation on an Ubuntu 8.04 host. When the host system is generating IO load (for example, copying large files as part of a backup operation), the guests (also Ubuntu 8.04) become extremely unresponsive and slow (simple Apache HTTP requests taking 5 seconds instead of the usual 200ms). We tried optimizing various aspects of the VMs, but the issue remains. Is there a known bug with VMware performance under linux if host IO load is high? Is there a way to fix this? Is this only an issue with Ubuntu systems, or have you seen it on other systems before? Thanks!

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  • VisualSVN Server won't work with AD, will with local accounts

    - by frustrato
    Decided recently to switch VisualSVN from local users to AD users, so we could easily add other employees. I added myself, gave Read/Write privileges across the whole repo, and then tried to log in. Whether I'm using tortoisesvn or the web client, I get a 403 Forbidden error: You don't have permission to access /svn/main/ on this server. I Googled a bit, but only found mention of phantom groups in the authz file. I don't have any of those. Any ideas? It works just fine with local accounts. EDIT: Don't know why I didn't try this earlier, but adding the domain before the username makes it work, ie MAIN/Bob. This normally only works when there are conflicting usernames...one local, one in AD, but for whatever reason it works here too. Kinda silly, but I can live with it.

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  • If all variables are a subset of the superkey, is the database design 5NF? [migrated]

    - by Lukazoid
    I have a table called LogMessages, which has the following columns: Level A numeric value which represents Trace, Debug, Info, Warning, Error or Fatal Time A UTC time Message Foreign key to a Messages table Source Foreign key to a Sources table User Foreign key to a Users table From what I can see, all of these columns are a part of the super key; if any single value differs to an existing row, a new row can be created. My question is, does this design comply to fifth normal form? I am unsure as some groups of data will be repeating, however I don't believe this violates 5NF? (correct me if I'm wrong)

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  • Best labeler for the server room?

    - by Matt Simmons
    Right now, I've got a Brother P-touch labeler that prints four or five sizes of text on one long label. It has features such as italics and bold. It's...non-ideal. What do you use in your server room? I have heard of labelers that will print vertically as well as horizontally, or which can produce labels for cable management as well. I also think it would be great to be able to produce barcodes for my tapes (LTO-3). So basically, I would like a labeler that prints normal, can print cable labels, and can print barcodes. Unicorn optional. Any ideas, or could you even suggest the best labeler for each solution?

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  • Fastest web server for serving static content

    - by Swader
    Hello, I'm optimizing our system for some faster static content delivery, and was wondering if anyone has any proper experience with the fastest web servers out there for such a purpose. From the three main candidates I've considered, Nginx, Cherokee and Lighttpd, each seems to have its own problems - but the reports I've read online are somewhat biased and lean towards whichever server the user is currently using. Any ideas on where to see a proper benchmark for this specific purpose, or at least a non-biased list of pros and cons? Any personal experiences and pitfalls I should be vary of? Thanks Edit: Serverfault.com gave the answer as nginx. I'd still like to hear some developer thoughts from this end of the universe.

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  • Windows Server 2008 R2 permissions: Users can't write despite being administrators

    - by Matias Nino
    We just set up a new R2 server and created a bunch of local user accounts on it that are part of the administrator's group. We then set permissions on some shares and folders to allow FULL CONTROL to anyone from the administrator's group. However, the users cannot write to these folders when logged on. On some folders on the C:\ they are prompted for consent in order to gain permission to read them. Any ideas? Are there any tools that would help me troubleshoot this? Thanks in advance for any tips.

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  • Time Machine Server on Fedora

    - by Conner Stephen McCabe
    I was just wondering if anyone knew how to/or knew of a good guide to setting up mac Time Machine backup server on a fedora 17 machine. I recently ran into an issue with my HDD and lost all of my data, so I don't want it to ever happen again, as it was quite traumatising, haha! I just want to be able to back all of my data up on my fedora machine from my mac, at scheduled times when I connect to my home network. If anyone could help, it would be fantastic, I searched around on google, but all of the ones I found were for older distros. Thanks guys!

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  • Compiling Ubuntu server: "libQtGui.so: undefined reference to png functions" errors

    - by Kowalikus
    I want to compile wkhtmltopdf on Ubuntu Server, but I have a problem with following errors: /usr/lib/libQtGui.so: undefined reference to `png_read_info@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_gAMA@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_PLTE@PNG12_0' ... /usr/lib/libQtGui.so: undefined reference to `png_create_info_struct@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_bgr@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_get_valid@PNG12_0' What can I do? in /usr/lib lrwxrwxrwx 1 17 2010-02-17 15:00 libQtGui.so -> libQtGui.so.4.5.2 lrwxrwxrwx 1 17 2010-02-17 14:59 libQtGui.so.4 -> libQtGui.so.4.5.2 lrwxrwxrwx 1 17 2010-02-17 14:59 libQtGui.so.4.5 -> libQtGui.so.4.5.2 -rw-r--r-- 1 10071604 2009-10-14 23:34 libQtGui.so.4.5.2

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  • Windows 2008 Server Firewall blocks from printing in other subnet

    - by xenolf
    Greetings, i have a windows 2008 server with activated firewall in the 192.168.0.xx subnet. From there i want to print on an printer which is located in the 192.168.10.xx subnet. Now when i try to print with the firewall on, nothing happens... when i turn the firewall off it prints flawlessly. Now i messed around with the windows firewall for about 4 hours straight and i cant seem to find a rule which lets me print. Even when i set the firewall to let everything through im unable to print. Has anyone encountered the same or a similar problem and has a solution for this issue? Thanks in advance xenolf

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  • WP: Oracle Multitenant on SuperCluster T5-8: Study of Database Consolidation Efficiency

    - by uwes
    Consolidation in the data center is the driving factor in reducing capital and operational expense in IT today. This is particularly relevant as customers invest more in cloud infrastructure and associated service delivery. Database consolidation is a strategic component in this effort. Oracle Database 12 c introduces Oracle Multitenant , a new database consolidation model in which multiple Pluggable Databases (PDBs) are consolidated within a Container Database (CDB). While keeping many of the isolation aspects of single databases, it allows PDBs to share the system global area (SGA) and background processes of a common CDB . The white paper recently published on OTN: Oracle Multitenant on SuperCluster T5-8: Study of Database Consolidation Efficiency analyzes and quantifies savings in compute resources, efficiencies in transaction processing, and consolidation density of Oracle Multitenant compared to consolidated single instance databases (SIDBs) running in a bare-metal environment.

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  • Is there other ways to do insert/update/delete on a remote oracle database?

    - by gunbuster363
    I asked a question recently concerning the speed of execution of insert/update/delete using JDBC driver in a remote machine, but the problem cannot be solved easily. I would like to ask, is there any other way to execute the insert/update/delete to the oracle? The current situation is this: the DB is on a seperate machine than the java program used to update the DB. I looked up the internet and found people suggesting using pure sql or pl/sql to do the update, is that possible? And do we need to operate the sql or pl/sql in a local machine? Because I have no knowledge about pl/sql, so I am not sure if we can create some kind of script and call it on a remote machine. Let say the situation is like this: the input data is on machine A, and the original java program are also on machine A, but the oracle is on machine B. is there any other approach other than JDBC?

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  • How would one build a relational database on a key-value store, a-la Berkeley DB's SQL interface?

    - by coleifer
    I've been checking out Berkeley DB and was impressed to find that it supported a SQL interface that is "nearly identical" to SQLite. http://docs.oracle.com/cd/E17076_02/html/bdb-sql/dbsqlbasics.html#identicalusage I'm very curious, at a high-level, how this kind of interface might have been architected. For instance: since values are "transparent", how do you efficiently query and sort by value how are limits and offsets performed efficiently on large result sets how would the keys be structured and serialized for good average-case performance

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  • Server refusing access from every host except itself

    - by mezamashiman
    I have media content on a hosted server that I want to be accessed by another domain. In the configuration file, even if I "Allow from all," all hosts except itself will fetch the hosting company's generic landing page, which puzzles me. I test it with curl, with the command: curl -H "Host: anything.com" http://mydomain.com and it just shows the hosting company's page. If I do: curl -H "Host: mydomain.com" http://mydomain.com it will show my content. How do I allow other hosts to access my content? I thought it would work with "Allow" in .htaccess, but it doesn't.

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  • Flash Media Server slow over SSL

    - by Antilogic
    We are using FMS to host a VoD site. We host FMS internally (we do not use a CDN). We recently installed an SSL certificate to alleviate connection issues for clients (they're networks either block or don't support RTMP), however we're noticing that when streaming in RTMPS connections are drastically slower (on the order of Mbps). I know SSL causes some amount of over head but both client and server show almost no signs of exertion. Speedtest.net and a locally hosted speed test confirm that bandwidth is not an issue. I'm really not a network guru, so I'm at a loss as to where to check next. Do any of you have an idea why streaming media would run so slow over SSL?

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