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  • Kerberos authentication not working for one single domain

    - by Buddy Casino
    We have a strange problem regarding Kerberos authentication with Apache mod_auth_kerb. We use a very simple krb5.conf, where only a single (main) AD server is configured. There are many domains in the forest, and it seems that SSO is working for most of them, except one. I don't know what is special about that domain, the error message that I see in the Apache logs is "Server not found in Kerberos database": [Wed Aug 31 14:56:02 2011] [debug] src/mod_auth_kerb.c(1025): [client xx.xxx.xxx.xxx] Using HTTP/[email protected] as server principal for password verification [Wed Aug 31 14:56:02 2011] [debug] src/mod_auth_kerb.c(714): [client xx.xxx.xxx.xxx] Trying to get TGT for user [email protected] [Wed Aug 31 14:56:02 2011] [debug] src/mod_auth_kerb.c(625): [client xx.xxx.xxx.xxx] Trying to verify authenticity of KDC using principal HTTP/[email protected] [Wed Aug 31 14:56:02 2011] [debug] src/mod_auth_kerb.c(640): [client xx.xxx.xxx.xxx] krb5_get_credentials() failed when verifying KDC [Wed Aug 31 14:56:02 2011] [error] [client xx.xxx.xxx.xxx] failed to verify krb5 credentials: Server not found in Kerberos database [Wed Aug 31 14:56:02 2011] [debug] src/mod_auth_kerb.c(1110): [client xx.xxx.xxx.xxx] kerb_authenticate_user_krb5pwd ret=401 user=(NULL) authtype=(NULL) When I try to kinit that user on the machine on which Apache is running, it works. I also checked that DNS lookups work, including reverse lookup. Who can tell me whats going?

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  • Perl glob one liner

    - by user260826
    Im working in a perl one liner to invert the contents of my file contents or perform operations, I was able to generate the script and one liner, but this one liner only works by entering file by file. perl -i -ne '$a=reverse $_;print "$a\n"' <filename> I want to change my one liner to get input from a range of files but when i do: perl -i -ne '$a=reverse $_;print "$a\n"' | ls -al I just get screen output of ls -al Not sure how to proceed. Thanks

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  • Acer Aspire one is falling apart on Ubuntu

    - by Narcolapser
    Question: How do I have my netbook detect and install hardware? Info: I have an Acer Aspire One, it came with windows XP and I loaded it with Win7. I decided I wanted to change to Ubuntu so I tried Ubuntu netbook remix, which failed horribly, and so after attempting 3 or so other OS's I ended with Ubuntu Desktop 9.10. Which worked fine for a while, but there were some minor issues so I asked a question about it here and decided to change my OS again. This last weekend I tried mandriva like that guy in my other question suggested, no success. when I had though my netbook lost the ability to use it's touch pad, I didn't think much of it, just thought it must be a driver or something. But When Mandriva failed, and I also while I was at it tried Damn small linux and Debian, which both failed to, I decided to switch back to Ubuntu Desktop(some where in here my keyboard stopped working for one attempt to). But first I gave the netbook remix one more try. it worked this time, with the exception of it didn't have any networking. I thought it was a driver issue again and finished the weekend with ubuntu desktop 9.10 again. But now things get really crazy. it doesn't know it has a wireless card or an ethernet card. It doesn't know my phone is connected trying to provide wireless broadband either. I'm clueless on what could be the problem. And with only a minimal amount of experience with Ubuntu can't navigate the entire interface with only my keyboard(it doesn't detect a USB mouse when I plug it in, it had when I installed it. in fact the network interfaces were working just fine when I live boot ubuntu to installed it). Even so, I don't know where to go or what to do to make it recognize it's hardware. I'm in a dire situation, any help is welcome.

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  • One domain hiding two servers

    - by George DSeas
    For our SaaS web-app we have two identical servers in two geographically separated data centers. FOO_1 is the production server and does real-time (MySQL master-slave) replication to its backup F00_2. We want our users to always go to THEFOO.COM which somehow points to the production server. So even if FOO_1 dies, we can just switch THEFOO.COM to redirect to FOO_2 so the failure is transparent. This switch can be manual or automatic but without failback (if FOO_1 somehow becomes available again). Is there a way to do this with DNS? I am getting stuck with ANAME and CNAMEs configuration. We don't use sub-domains, just straight domains. If not, what are other options? Does it make sense to just have a web server at LOVELY_FOO.COM and just redirect all traffic? I also looked at load balancers but didn't see a solution for across data centers/network providers.

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  • Multiple domains, one config, hosted on apache2

    - by Kristoffer Sall Hansen
    First a quick disclaimer, I'm not a 'server guy' or a 'unix pro' or anything like that, I'm a web programmer who got stuck doing server works since I ran linux (ubuntu) on my netbook. I'm trying to set up an apache server running on Debian to automagically serve multiple domains, each domain needs to have its own directory in /var/www. Since this is the last thing I do for this company I really need it to be easy for my successor (who is even more a beginner at servers than I am), to create more domains without having to muck around with ssh or /etc/apache2/sites-available, so what I'm looking for is basically any magic mumbo-jumbo in default (or apt-get, or conf.d) that makes the server start serving any domain that has a matching folder in /var/www they will ofcourse have to initiate domain transfers the usual way. I have no problem setting up domains individually. Ick... hope the above makes sense to someone.

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  • IPTables: NAT multiple IPs to one public IP

    - by Kaemmelot
    I'm looking for a way how to nat 2 or more inner IPs (in my case xen doms) to one outer IP. I tried to use iptables -t nat -A PREROUTING -d 123.123.123.123 -j DNAT --to 1.2.3.4 --to 1.2.3.7 iptables -t nat -A POSTROUTING -s 1.2.3.4 -j SNAT --to 123.123.123.123 iptables -t nat -A POSTROUTING -s 1.2.3.7 -j SNAT --to 123.123.123.123 And got an error: iptables v1.4.14: DNAT: Multiple --to-destination not supported Try `iptables -h' or 'iptables --help' for more information. I found this in the manpage: Later Kernels (= 2.6.11-rc1) don't have the ability to NAT to multiple ranges anymore. So my question is: Why is it not possible anymore and is there a workaround? Maybe I should use an other method I don't know yet? EDIT: The idea is to use the system like a router, so I have one address but multiple users behind. The problem is I don't know which connection reffers to a user (for example 1.2.3.4). But I know, they all have different ports open for incomming traffic. So my solution (for DNAT) would be to nat all incoming connections to all users and filter all unused ports, so the connection goes to one single user. For outgoing traffic I would use iptables -A FORWARD -i eth0 -d 1.2.3.4 -m state --state ESTABLISHED,RELATED -j ACCEPT

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  • subdomains to different VMs on one IP address

    - by efbenson
    I have a setup at home with an ESXi server Freenas server and several win7 clients. I have a domain refactoringme.com I set the @ and WWW domain record to my (current) IP address. I then forwarded port 80 to my local win2k3 server on my Linksys router and used host name matching to run the 5 test sites I have. That all works. Now I want to use the turnkey machines and move to dedicated VM servers. One for a wiki one for SVN etc. So how do I get www.refactoringme.com to go to one internal IP address and wiki.refactoringme.com to different internal IP address, while they both use the same external IP address? I added the additional record for wiki to my domain and pointed it to @. I figured it had to be involving a real firewall. So I installed PFSense on a VM and set it on the DMZ on my Linksys. From this point I haven't had any luck. I thought that maybe it would be in the DNS Forwarder or maybe in the Rules sections but neither have worked. Am I doing it wrong or on the right track but am missing something. Thanks for all the help.

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  • Recover LVM2 volume group after one HDD failed

    - by Bernd
    I had two HDDs, each one containing a LVM partition which formed a volume group. Then I had two LVs, one for my / directory and one for my /home/ directory. Yesterday where I had my / dir failed. I'm trying to recover at least my /home/ dir. What I've done so far: Boot a live system Extract LVM2 metadata from the working HDD using dd Copy metadata to /etc/lvm/backup/vg0 Now I'm trying to do this: pvcreate --restore /etc/lvm/backup/vg0 --uuid "[uuid of my working hdd]" /dev/sdb2 But I always get: Couldn't find device with uuid '[uuid of broken hdd]'. Couldn't find device with uuid '[uuid of working hdd]'. Device /dev/sdb2 not found (or ignored by filtering). I confirmed that /dev/sdb2 exists and I've commented out all filtering settings from /etc/lvm/lvm.conf so I don't know what might be causing pvcreate not to find the device. So: What might be the problem? Is it even possible to restore this partition? (As I'm writing this I'm starting to think it's impossible D:) Edit: Okay, looks like I've got it figured out. I was using a Ubuntu 8.10 CD (yeah, I know it's not supported anymore) and it seems that was the problem. When I started from a Ubuntu 10.04 CD everything worked 'fine', I could mount my LVM partitions partially without problems. (Will answer the question in 4 hours. But if anyone has still got some hints/tips, please share! :)

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  • i want the ruby code of the php code i have given inside , please help me out

    - by Arpit Vaishnav
    <?php // amcharts.com export to image utility // set image type (gif/png/jpeg) $imgtype = 'jpeg'; // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?

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  • Dynamically pixelate an html image element

    - by Chris Armstrong
    I'm to take an image on a webpage, and then use javascript (or whatever would be best suited) to dynamically 'pixelate' it (e.g. into 20px squares). Then, as the user scrolls down the page, I need the image to gradually increase in resolution, till it is no longer pixelated. Any ideas how I could go about doing this? I realise I could use php to resize an image and several times and just switch out the image, but that would require loading several extra images. Also, I know I could probably do the effect with flash & pixelbender, but I want to achieve it within the limitations of HTML5, CSS & Javascript if possible. Appreciate any thoughts!

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  • Mail to Mailenable group sometimes bounces back because it cannot find one of the group members

    - by Stanley
    I am using MailEnable Enterprise Edition 6.53. On one of my PostOffices I have a group address set up with 5 members in the group. Under normal circumstances when someone sends a mail to this group then the mail gets successfully forwarded to all 5 members in the group. However, every now and then when a recipient sends to the group they get a bounce back message from us that the mail could not be delivered because one of the user's addresses was not found on the server. This could happen for any one of the 5 users in the group. The error message looks like: Message could not be delivered. Error was: The email address is not available on this system The following recipient(s) could not be reached: [SF:mydomain.com/my_username] What could be causing this and how do I fix it? Obviously the mailbox DOES exist as, under normal circumstances, when someone mails the group the mail gets delivered successfully and forwarded to all group members. All the mailboxes most definitely DO exist on the system. EDIT: I have done more investigation and I see an error in Windows Event Viewer: MailEnable Database Provider error: 0 FAILURE: (SQLDriverConnect), Module: MEIMAPS.exe; Error: [Microsoft][ODBC SQL Server Driver]Timeout expired This seems to be related to http://forum.mailenable.com/viewtopic.php?p=53157 and http://www.mailenable.com/kb/content/view.asp?ID=ME020535 but the setups in these links use MySQL as a database whereas we use SQL Server. Maybe this shines some new light on the problem?

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  • allowDefinition='MachineToApplication' error when publishing from VS2010 (but only after a previous

    - by burnt_hand
    I can run my Asp.Net MVC 2 application without an issue on my local computer. Just Run / Debug. But if I have already built it, I can't publish it! I have to clean the solution and publish it again. I know this is not system critical, but it's really annoying. "One Click Publish" is not "Clean solution and then One click publish" The exact error is as follows: Error 11 It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. I suspect it's something to do with the Web.Config in the Views folder, but then why only after I build once previously. And just to note, the app works fine once published.

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  • Which is the fastest way to move 1Petabyte from one storage to a new one?

    - by marc.riera
    First of all, thanks for reading, and sorry for asking something related to my job. I understand that this is something that I should solve by myself but as you will see its something a bit difficult. A small description: Now Storage = 1PB using DDN S2A9900 storage for the OSTs, 4 OSS , 10 GigE network. (lustre 1.6) 100 compute nodes with 2x Infiniband 1 infiniband switch with 36 ports After Storage = Previous storage + another 1PB using DDN S2A 990 or LSI E5400 (still to decide) (lustre 2.0) 8 OSS , 10GigE network 100 compute nodes with 2x Infiniband Previous experience: transfered 120 TB in less than 3 days using following command: tar -C /old --record-size 2048 -b 2048 -cf - dir | tar -C /new --record-size 2048 -b 2048 -xvf - 2>&1 | tee /tmp/dir.log So , big problem here, using big mathematical equations I conclude that we are going to need 1 month to transfer the data from one side to the new one. During this time the researchers will need to step back, and I'm personally not happy with this. I'm telling you that we have infiniband connections because I think that may be there is a chance to use it to transfer the data using 18 compute nodes (18 * 2 IB = 36 ports) to transfer the data from one storage to the other. I'm trying to figure out if the IB switch will handle all the traffic but in case it just burn up will go faster than using 10GigE. Also, having lustre 1.6 and 2.0 agents on same server works quite well, with this there is no need to go by 1.8 to upgrade the metadata servers with two steps. Any ideas? Many thanks Note 1: Zoredache, we can divide it in two blocks (A)600Tb and (B)400Tb. The idea is to move (A) to new storage which is lustre2.0 formated, then format where (A) was with lustre2.0 and move (B) to this lustre2.0 block and extend with the space where (B) was. This way we will end with (A) and (B) on separate filesystems, with 1PB each.

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  • How to disable mod_security2 rule (false positive) for one domain on centos 5

    - by nicholas.alipaz
    Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive. The error I am receiving is below: [Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"] and here is /usr/local/apache/conf/modsec2.user.conf (line 352) #Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'" The questions I have are: What should I do to "whitelist" or allow this rule to get through? What file do I create and where? How should I alter this rule? Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps? Thanks guys

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  • Nexus One WiFi connection problems.

    - by sunocky
    I have two new Nexus One for a research project. For the projects I need to keep a server running on the phone. But soon I found out that both the phones have inconsistent WiFi connection problems at my home. It can connect to my WiFi network, but will drop off in a random time. And in order to reconnect to my WiFi, I may need to reboot my router, or the phone will say "obtaining IP address" and then "Unsuccessful". I also own a G1 with firmware version 1.6, it has no such connection problems. Well, to my surprise, the two Nexus One works fine with connecting to the WiFi network at my work place, which is a WEP type WiFi connection. By the way, it is a WPA type connection at my home. Anyone knows what's the problems with the Nexus One? Any suggestions on what should I do if I want to keep the WiFi connection live all the time at my home? Thanks very much!

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  • please convert this PHP code in ruby

    - by Arpit Vaishnav
    <?php // amcharts.com export to image utility // set image type (gif/png/jpeg) $imgtype = 'jpeg'; // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?

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  • How to clone only one of multiple nested elements

    - by eknown
    How do I find if the div I'm cloning has more than one of a child div with a certain class, and if so only clone one of them. Say the cloned div is .diseaseCon, and the child div(s) is .symptomCon, in the cloning action, how can I detect if there's more than one .symptomCon divs and only clone one if there are?

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  • Raid-z unaccessible after putting one disk offline

    - by varesa
    I have installed FreeNAS on a test server, with 3x 1Tb drives. They are setup in raidz. I tried to offline one of the disks (from the FreeNAS web-ui), and the array became degraded, as I think it should. The problem is with the array becoming unaccessible after that. I thought a raid like that should be able to run fine with one of the disks missing. Atleast very soon after I offline'd and pulled out the disk, the iSCSI share disappeared from a ESXi host's datastores. I also ssh'd into the FreeNAS server, and tried just executing ls /mnt/raid (/mnt/raid/ being the mount point). The whole terminal froze, not accepting ^C or anything. # zpool status -v pool: raid state: DEGRADED status: One or more devices are faulted in response to IO failures. action: Make sure the affected devices are connected, then run 'zpool clear'. see: http://www.sun.com/msg/ZFS-8000-HC scrub: none requested config: NAME STATE READ WRITE CKSUM raid DEGRADED 1 30 0 raidz1 DEGRADED 4 56 0 gptid/c8c9e44c-08e1-11e2-9ba6-001b212a83ea ONLINE 3 60 0 gptid/c96f32d5-08e1-11e2-9ba6-001b212a83ea ONLINE 3 63 0 gptid/ca208205-08e1-11e2-9ba6-001b212a83ea OFFLINE 0 0 0 errors: Permanent errors have been detected in the following files: /mnt/raid/ raid/iscsivol:<0x0> raid/iscsivol:<0x1> Have I understood the workings of a raidz wrong, or is there something else going on? It would not be nice to have the same thing happen on a production system...

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  • Two servers, two domains, one ip. mod_proxy beginner

    - by Gutsav
    I run two virtual web servers (both running apache2 on debian). I have just one external IP, but two domains, and I want a domain going to each of the servers. I've understood that I need a Reverse Proxy, and I enabled both the mod_proxy and the mod_proxy_http modules on the "primary server". Do I need to enable anything on the "secondary server"? I also understood that I need to write some things in a virtual host file, but what? On the primary server, I have a virtual host file for one of the domains, and some for subdomains. I want domain1.tld to go to the primary server (port 80 is forwarded to it, so that works) and domain2.tld to go to the other server (internal ip 192.168.0.x). No ports needs to be forwarded to it, right? So, what to add and in which virtual host file? Or a new one? Other questions suggest adding ProxyPass and ProxyPassReverse, but I'm lost anyway, and I just don't understand the apache documentation. Thanks in advance

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  • My D-Link Router is only allowing one connection

    - by Blaze
    My Router (Model: DI-624) is only allowing one wireless connection to one laptop. The other laptop is stuck hanging at connecting to the Internet I have the SSID set as "Pedro-Home" and is using a WPA PSK secured password. I have set the router using "Blaze-PC" while wired. Both Laptops critically need the Internet. > Dynamic DHCP Client List > > Host Name IP Address MAC > Address Expired Time > Blaze-PC 192.168.0.100 70-f1-a1-ff-39-a8 Apr/21/2011 17:49:14 > pedro 192.168.0.105 00-26-82-c8-47-25 Apr/21/2011 17:50:05 <<This computer isn't connecting.

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  • mysqldump skip one table

    - by danneth
    I'm running a cronjob to backup our system using mysqldump. The database contains 90 or so tables. One of these tables is HUGE and every once in a while causes the dump to fail. From the manual I see that you can specify specific tables to dump shell> mysqldump [options] db_name [tbl_name ...] This got me thinking. What if I have two jobs, one for dumping the huge table, and one for all the others. To accomplish this it would be nice if I could to something like shell> mysqldump -u backupuser -p database huge_table > db_huge_table.sql shell> mysqldump -u backupuser -p database --skip huge_table > db_rest.sql Unfortenately I'm not seeing such and option. I could of course explicitly state the 90 tables, but that just seems like a mess. Another option would be a script of some sort, but before checking that route I'll try this resource. MySQL is 5.1.61 on CentOS 6.2

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  • C# sends SQL data 4 times less from one box than from another

    - by Bobb
    W2003, .NET 3.5, SQL 2008 I have prod and UAT app servers deployed in 2 different data centres. I have a C# app which reads text file, parse the text and sends the data to the SQL in bulk. SQL server is in US and the app servers are in London (but in different places). All POPs have dedicated network connections. There is no public internet involved. When the app runs on UAT server I can see in Perfmon that the Send byte/sec is x4 higher than from production server. My estimate is that one server outputs at 1 MB/s and the other at 250 KB/s rate. My suspicion immediately is that there is a router on one of the DCs which shapes traffic or does QoS limitation on traffice from London to US. However support and Windows team and networkig team all are saying that there are no differences in neither networking config on the 2 DCs nor NIC config on the 2 app server... How to find out why is the networking bottlneck is 4 times tighter in one place than in the other? What can I do about it?

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  • Two TableVIew in ONE ViewCOntroller

    - by senthilmuthu
    hi, i i want to activate scrolling vertically through programming for 2 UITableview at sametime?(one table view length 160,another one has 160).is it possible ?In one Viewcontroller's view i have scrollview, on that i have two tableviews(instead of one,like two column)..how can i scroll vertically both at same time?any help please?

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