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Articles indexed Wednesday March 2 2011

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  • SQL Server replication - Log Reader Agent Read Latency Issue, Please help

    - by envykok
    Hi all, I am facing one transactional replication delay issue on log reader agent. The log reader output is : ********* STATISTICS SINCE AGENT STARTED ************** 02-28-2011 20:12:08 Execution time (ms): 304141 Work time (ms): 304016 Distribute Repl Cmds Time(ms): 303764 Fetch time(ms): 300813 Repldone time(ms): 1826 Write time(ms): 5319 Num Trans: 15500 Num Trans/Sec: 50.984159 Num Cmds: 191639 Num Cmds/Sec: 630.358271 It seems Log Reader Reader-Thread Latency, and I also run 'sp_replcounters' and see more than 20,000 sec replication latency and keep on increasing. I used SQL profiler to monitor sp_replcmds and found sp_replcmds execution time was 11 sec to 15 sec Is it there any way to optimize to make Log Reader read faster from transaction log??? Other information: SQL Server 2008 (SP2) Standard 64 bit

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  • How can you get x509 to work with Trac?

    - by sasker
    Hi I have been trying to find a way to get x509 certs for authentication for Trac but I could not find any plugins on TracHacks or tutorials on this. The closest I've seen so far is this post on google groups http://groups.google.com/group/trac-users/browse_thread/thread/0ea6cb82058eb9a9?pli=1 Does anyone have any idea where I can find relevant information or know how I can go about doing this? Thanks

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  • Why I am getting "Problem loading the page" after enabling HTTPS for Apache on Windows 7?

    - by Anish
    I enabled HTTPS on the Apache server (2.2.15) Windows 7 Enterprise by uncommenting: Include /private/etc/apache2/extra/httpd-ssl.conf in C:\Program Files (x86)\Apache Software Foundation\Apache2.2\conf\httpd.conf and modifying C:\Program Files (x86)\Apache Software Foundation\Apache2.2\conf\httpd-ssl.conf to include: DocumentRoot "C:/Program Files (x86)/Apache Software Foundation/Apache2.2/htdocs" ServerName myserver.com:443 ServerAdmin [email protected] ... SSLCertificateFile "SSLCertificateFile "C:/Program Files (x86)/Apache Software Foundation/Apache2.2/conf/cert.pem SSLCertificateKeyFile "SSLCertificateFile "C:/Program Files (x86)/Apache Software Foundation/Apache2.2/conf/key.pem" Then I restart apache (going to start-All Progranms-Apache Server 2.2-Control-restart) and go to localhost on port 443 in Firefox , where I get: <<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <html> <head> <title>Index of /</title> </head> <body> <h1>Index of /</h1> <ul><li><a href="MyPageLinks/"> Links/</a></li> ..... .... </ul> </body></html> But on Display of WebPage I see: Unable to connect Firefox can't establish a connection to the server at localhost. *The site could be temporarily unavailable or too busy. Try again in a few moments. *If you are unable to load any pages, check your computer's network onnection. *If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web. I read: Why am I getting 403 Forbidden after enabling HTTPS for Apache on Mac OS X? and added default web server configuration block to match my DocumentRoot The error Log C:\Program Files (x86)\Apache Software Foundation\Apache2.2\logs\error.log gives following error: The Apache2.2 service is running. (OS 5)Access is denied. : Init: Can't open server certificate file C:/Program Files (x86)/Apache Software Foundation/Apache2.2/conf/cert.pem I checked the permissions for cert.pem and it indicates: All the permissions (Full control, Read, Read and modify, execute, Write) are marked for Admin and I am currently logged in as Admin. I tried using oldcert.pem and oldkey.pem on the same server and it works fine. Is there anything that I missed?

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  • IIS serving static content gives 503 at random

    - by Steffen
    We're having a few issues with our image server. It's a Win 2008 running IIS 7.5 and it only serves static content: images. It has run without issues for quite a while, until recently when we disabled Output Caching, as we noticed having it enabled meant it sent no-cache host-headers to the clients (forcing them to fetch the images from the server every time) We've read quite a bit about it, and it seems IIS just works that way - either you use Output Caching or you get to use cache host-headers. Anyway having disabled the Output Cache, we now experience random 5 minutes intervals, where all requests just get a 503 Service Unavailable. During this period the "Files cached" performance counter staggers (neither increased nor decreased) and after the period all caches are flushed. You might find it weird I talk about caching, since we disabled Output Caching. The thing is we changed the ObjectTTL parameter in registry, so we cache files for 3 minutes (which has worked very well, our Disk I/O dropped significantly) So even with Output Caching disabled, we're still caching plenty of files - if we could just get rid of the random 503 it'd be perfect :-D We don't get any messages in the Windows event log during these 503 intervals, so we're pretty stumped as to what to do. Any ideas are very welcome :-)

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  • How to setup squid only cache specific domains?

    - by ???
    For example, I want squid to cache HTTP contents only for *.archive.ubuntu.com, which is blocked by firewall, and don't cache for other domains. And, only LAN (192.168.0.0/16) users can access the cached contents, but all users are allowed to access non-cached contents. User-IP Dest-Domain acl Expect ---------------- ----------------------- ------ ------------------------- 192.168.0.0/16 *.archive.ubuntu.com allow Cache Proxy, Fast 192.168.0.0/16 *.other allow Pass Proxy, Slow Other * allow Pass Proxy, Slow

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  • sendmail rules for filtering spam

    - by user71061
    Hi! Can anyone help me with constructing sendmail rules for limiting spam? Assuming that name of my domain is my.domain.com, I want to use following rules: If BOTH sender and recipient address is from my.domain.com, message should be rejected (sendmail server only relays messages between my internal exchange server and outside word, so sending messages between users from my.domain.com always occour on exchange server and never on sendmail server) If recipient list contains AT LAST ONE invalid address, whole message should be rejected (even for valid recipients addresses) If sending server uses HELO message with bogus domain name (other than domain of this server), message should be rejected Any server attempting to send mail to dedicated address (f.e. [email protected]), should be automatically blacklisted Any other suggested rules ...

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  • Gotchas for reverse proxy setups

    - by kojiro
    We run multiple web applications, some internal-only, some internal/external. I'm putting together a proposal that we use reverse proxy servers to isolate the origin servers, provide SSL termination and (when possible) provide load balancing. For much of our setup, I'm sure it will work nicely, but we do have a few lesser-known proprietary applications that may need special treatment when we move forward with reverse-proxying. What kinds of traps tend to cause problems when moving an origin server from being on the front lines to being behind a proxy? (For example, I can imagine problems if an application needed to know the IP address of incoming requests.)

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  • procdump on w3wp.exe: Only part of a ReadProcessMemory or WriteProcessMemory request was completed.

    - by JakeS
    I'm having a problem with an IIS application that occasionally spikes up in CPU usage, and am trying to use procdump to get a memory dump for examination. I'm running "procdump.exe -64 -mA 9999" where 9999 is the pid of the process. But every time I do it, I get an error: Only part of a ReadProcessMemory or WriteProcessMemory request was completed. Doing this also recycles the apppool, relieving the CPU spike, so I can't keep trying until I get it right. Does anyone know what is going wrong?

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  • tcpdump selective acknowledgements question

    - by wlaus
    Hi All, I eventually sometimes watch most initial tcp connection attempts like this: tcpdump -nn -Z somepcapuser not src host (12x.x5.109.xxx or 62.75.160.xxx ) and not (port 9001 or 443 or 8080 ) and tcp[tcpflags]&(tcp-syn) !=0 and not tcp[tcpflags]& (tcp-ack) !=0 or icmp this works pretty well to quickly identify oddness so far. However, I now have a question on the following output: 03:53:52.227884 IP 203.81.166.20.53786 62.75.160.xxx.80: S 846930886:846930886(0) win 61690 "<"mss 1460,nop,nop,sackOK,opt-178:f04700000000,nop,wscale 4"" I wonder what the marked portion means, haven't seen that before. Thanks for help wlaus

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  • Rack layout for future growth

    - by bleything
    We're getting ready to move to a new colo facility and I'm designing the rack layout. While we have a full rack, we only have 12U worth of hardware right now: 1x 1U switch 7x 1U servers 1x 2U server 1x 2U disk shelf The colo facility requires us to front-mount the switch and use a 1U brush strip, so we'll be using a total of 13U of space. Regarding growth, I'm reasonably sure we'll be adding another 4U in servers, 1-2U of network gear, and 2-4U of storage in the mid-term. Specific questions I'm hoping to get help with: where should I mount the switch? the LEDs are on top... should I group the servers by function with space for adding new machines? as an alternative, should I group servers based on whether they are production or staging? where in the rack should I start? in the middle? at the top? at the bottom? equally spaced? Here's a silly little ASCII diagram of what I'm thinking right now. Please feel free to tear my design apart, I've really no idea what I'm doing :) Any advice is very welcome. edit: to be clear, the colo is providing redundant power with UPS and generator, so that's why there's no power gear in the plan, except for the 0U PDU that I didn't diagram. 42 | -- switch ---------------------- 41 | -- brush strip ----------------- 40 | ~~ reserved for second switch ~~ 39 | ~~ reserved for firewall ~~~~~~~ 38 | 37 | -- admin01 --------------------- 36 | 35 | -- vm01 ------------------------ 34 | -- vm02 ------------------------ 33 | ~~ reserved for vm03 ~~~~~~~~~~~ 32 | ~~ reserved for vm04 ~~~~~~~~~~~ 31 | ~~ reserved for vm05 ~~~~~~~~~~~ 30 | 29 | -- web01 ----------------------- 28 | -- web02 ----------------------- 27 | ~~ reserved for web03 ~~~~~~~~~~ 26 | ~~ reserved for web04 ~~~~~~~~~~ 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | -- db01 ------------------------ 15 | +- disks ----------------------+ 14 | +------------------------------+ 13 | ~~ reserved for more ~~~~~~~~~~~ 12 | ~~ db01 disks ~~~~~~~~~~~~~~~~~~ 11 | 10 | +- db02 -----------------------+ 9 | +------------------------------+ 8 | ~~ reserved for db02 ~~~~~~~~~~~ 7 | ~~ disks ~~~~~~~~~~~~~~~~~~~~~~~ 6 | ~~ reserved for more ~~~~~~~~~~~ 5 | ~~ db02 disks ~~~~~~~~~~~~~~~~~~ 4 | 3 | 2 | 1 |

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  • 4.5.1 4.4.0 DNS Query Failed

    - by Justin
    We are running Exchange 2010 and lately I have noticed that some outgoing messages get stuck in the queue with the error "451 4.4.0 DNS Query Failed". On every domain that this happens on I have been able to use nslookup to find the MX record and open a connection to their server over SMTP so I am reasonably sure that this problem is on my end. My send connector isn't routing mail through a smart host nor is is set to use a different DNS server to do the lookup so I'm stumped as to why these messages aren't going out. Any ideas?

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  • Default document not working after installing SP1 on Windows 2008 R2 x64

    - by boredgeek
    We have a web site that should only be available for authorized users. So we deny anonymous access for the site. However we do allow anonymous access to the default page and the login page. When we installed SP1 the behavior of the server changed. Now if the user is trying to access the root of the site, say http://mysite.com, she is redirected to login page rather than the default page. Is there a hotfix to bring back the previous behavior?

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  • Internal only DNS?

    - by ethrbunny
    We are running a research project with hundreds (becoming thousands) of remote hosts. Each host is running OpenVPN so we can find them regardless of what their 'assigned' IP is. We have been using DynDNS to manage this but we're running into some issues with them ( API is weak/nonexistent, size constraints, etc). Im looking into setting up a internal-only domain (EG "our.stuff" so a host would be "site1.our.stuff" or "site3.net4.our.stuff") that I can configure with the info from the OpenVPN server. Since we'd have to point our internal DNS to this machine it would have to be able to route/cache requests for 'external' machines as well. I've been trying to read about 'internal DNS', 'private', 'non-routeable' but I'm not having much success. Summary: need info on internal, caching DNS server. Something with open-source would be ideal. If not, I can script out changes to .conf, etc.

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  • AWS:EC2:: Why my web folder is called "html"??

    - by heathub
    P.S Q stands for Question. My environment is: Amazon linux 64 bit (Q1. i dont if its ubuntu or red-hat, is there any way to check?) And I need to run php and mysql, thus I installed httpd (Q2. is httpd == apache??), but on my default page, it says: please upload files to /var/www/html folder. Q3.This is the first time I set aws ec2 server myself, my previous experience is hosting with hosting company. Normally in hosting company, my web directory is called "www" or "public_html" or "htdocs".Why is my folder name is "/var/www/html"? Am I installed wrong apache?

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  • Setting a time limit for a transaction in MySQL/InnoDB

    - by Trevor Burnham
    This sprang from this related question, where I wanted to know how to force two transactions to occur sequentially in a trivial case (where both are operating on only a single row). I got an answer—use SELECT ... FOR UPDATE as the first line of both transactions—but this leads to a problem: If the first transaction is never committed or rolled back, then the second transaction will be blocked indefinitely. The innodb_lock_wait_timeout variable sets the number of seconds after which the client trying to make the second transaction would be told "Sorry, try again"... but as far as I can tell, they'd be trying again until the next server reboot. So: Surely there must be a way to force a ROLLBACK if a transaction is taking forever? Must I resort to using a daemon to kill such transactions, and if so, what would such a daemon look like? If a connection is killed by wait_timeout or interactive_timeout mid-transaction, is the transaction rolled back? Is there a way to test this from the console? Clarification: innodb_lock_wait_timeout sets the number of seconds that a transaction will wait for a lock to be released before giving up; what I want is a way of forcing a lock to be released. Update: Here's a simple example that demonstrates why innodb_lock_wait_timeout is not sufficient to ensure that the second transaction is not blocked by the first: START TRANSACTION; SELECT SLEEP(55); COMMIT; With the default setting of innodb_lock_wait_timeout = 50, this transaction completes without errors after 55 seconds. And if you add an UPDATE before the SLEEP line, then initiate a second transaction from another client that tries to SELECT ... FOR UPDATE the same row, it's the second transaction that times out, not the one that fell asleep. What I'm looking for is a way to force an end to this transaction's restful slumber.

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  • How can I prevent OpenVPN from clobbering local route?

    - by ataylor
    I have a local network on 192.168.1.0 with netmask 255.255.255.0. When I connect to a VPN though OpenVPN (as a client), it pushes a route for 192.168.1.0 that clobbers the existing one, making my local network inaccessible. I don't to access anything on 192.168.1.0 on the remote machine; I'd like to just ignore it, while accepting the other routes that are pushed. My client is Ubuntu 10.10. How can I skip the one offending route?

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  • what is ip 10.1.1.130 to which seems monitored by NT Kernel & System process on Windows 7?

    - by EndangeringSpecies
    I used netstat to see what is happening with network connections, and I see this weird ip address somehow listed together with PID 4 "NT Kernel & System", whatever that might be. Netstat describes it as a "local address" and there is no "foreign address" involved (btw, what are local and foreign addresses anyway?) In the column to the right there is neither "listening" nor "established" record, so no record at all there.

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  • How to make Outlook Calendar reminders pop up in Windows 7

    - by thursdaysgeek
    I'm just starting to use Windows 7 and I want to know how to make my Outlook reminders pop up and show themselves. They keep opening discretely, quietly as just another Outlook entry on the taskbar. And I keep overlooking them, because they pop up behind everything else. How do I make them less easy to overlook? (Yeah, usually you don't want obnoxious apps that push themselves to the forefront. But there are a few places where I do want that, and Outlook calendar reminders are one of them.)

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  • Mac OS X - Force screen resolution

    - by wjlafrance
    Hello! I'm trying to use the lastest version of a certain development tool and it's sort of difficult to use on a 1200x800 display. Using VMWare Fusion, I can set the screen resolution inside a VM to 1900x1200 on my 13" MBP and it's still usable. Does anyone know of a way to force Mac OS X to scale it's resolution? I tried ScreenResX and it said the scaled resolution was "invalid" or something like that. I know that there are only a certain number of pixels on the screen. I'm only asking how to scale, not set a legit resolution. My current hack solution is to run Snow Leopard Server in a VM with resolution scaling.

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  • Do registry issues with Win7 persist through a recovery from a system image?

    - by user59089
    So I need a bit of advice, please; here's my situation: I have 1) a system image on an a brand new external 1 TB SATA drive, that I managed to successfully capture before my 2) primary system drive went down. I realize this is a fairly simple matter of buying a new primary drive and performing the recovery to the fresh disk...however, the issue is that I believe Win7 was also having some significant issues of its own--basically, Update unable to install updates, and Backup continually ditching the auto backup schedule. I'd been trying to address those issues when my system was still working, but it's been so fruitless, I'm convinced a Win7 re-install would be best, and now I'm concerned that if I was in fact having what I believe are likely registry-related issues before, that these will persist through a recovery--would that likely be correct? I'm mainly worried about recovering my files, so if I did a full recovery from the image, should I be able to then access my individual files, and copy them manually to an external drive, so I can then do a full re-install of Win7? Sory if this seems obvious, but I've never done a recovery before and just trying to make sure there's no red flags with what I have in mind...

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  • Can an administration extraction of an MSI file perform registry and/or system wide changes?

    - by Wil
    I am always getting MSI (or setup EXEs which are basically MSI) files, and half the time they really do not need to be a setup. Microsoft is probably one of the biggest sources - almost every time I want to download a little source code sample, it has a MSI which if you install, only usually has three files. I would rather not do an install and add it to the add/remove programs and who knows what else (although I am sure it wouldn't be that bad) for the sake of three files! For this reason, I always use the following command: MSIEXEC /a <filename.msi> /qb TARGETDIR=<directory name> Now, this works fine and I have never had problems... However, I was just browsing some articles on Technet and found the following resource about administration installs. Apparently, MSI files can have two sequences: The AdminUISequence Table and the AdminExecuteSequence Table. I am not so worried about the AdminUISequence Table as it states that "The installer skips the actions in this table if the user interface level is set to basic UI or no UI", and this is what the /qb switch I use does. However, there is nothing similar written against AdminExecuteSequence Table. I realise that many people who write MSI files simply do it for a single end user and probably do not even touch the admin install options, however, is it possible for them to set items that can affect the system and if so, is there a fail proof way of extracting? I do already use 7-zip, however despite it being on the "supported" page, MSI support is lacking... well... completely sucks. It looses the file names and is generally useless. They have a bug which was closed with no reason/resolution over three years ago, and I opened a forum post and haven't had a reply. I would not really want to install any additional programs if I could help it and just want peoples opinions on this. Thanks. edit - Should also say, I run with UAC on, and I have never ever had a elevation prompt whilst performing the MSIEXEC operation, so I am guessing I have never had a system wide change, however, I am still curious as to if it is possible... As if changes (even just to the user) are possible I would do this locally/in a VM and never on a server or place of importance!

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  • Virtual Box state not saving upon restart/reset/shutdown - reverting to an earlier state

    - by user638756
    Every time I restart/shut down my VM in VirtualBox (image is Ubuntu 10.02), whenever I start it back up, it reverts to the state it was in after I installed Guest Additions. This is extremely frustrating as every time I make progress on a project, whenever it restarts (mostly from crashing), I have to redo mostly everything. Is this a known problem with Guest Additions or with Virtual Box in general, and if so is there some solution?

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  • What's the best way to read mailing lists in 2011?

    - by Avdi
    I used to use Emacs/GNUS for reading mailing lists, but that feels very 1990. Plus, it doesn't sync my scoring across PCs. GMail is wonderful, but it kind of sucks for mailing lists. The essential "mute" feature doesn't even work unless the mail is in the Inbox. I'd read my mailing lists on the Google Groups site, but not all of them are Google Groups. Basically, I'm looking for the "Google Reader" of mailing lists. Any suggestions?

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  • run as dialog always pops up

    - by user12006
    I recently got some malware on a machine that I don't use for much (partly intentional). I've cleaned it, but now everytime I open any .exe the 'Run As' dialog pops up asking me which user I want to use to run the program. What causes this, and what's the fix for it? edit My process to remove the malware was as such: Disconnected from the network Deleted DisableTaskMgr reg key Inspected with Process Explorer and Task Manager and noticed that all applications were being run within another executable located in Documents and Settings...\Temp\Some.exe The system tray application was also in Documents and Settings...\Temp\SomeOther.exe I suspected that a service was in place as the system tray application would restart if it was killed, but couldn't find any service that I didn't recognize. Removed permissions from Some.exe and SomeOther.exe (on those files only) Restarted and deleted Some.exe and SomeOther.exe Deleted startup entries that were created Ran AVG Free and Windows Defender to remove anything else (they would be killed immediately before the two .exe's were removed) Cleaned registry via CCleaner note that system restores would finish saying something to the effect of 'couldn't restore system: there were no changes made'. I attempted to restore to a week ago, and I only got the malware yesterday.

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  • IE8 Crash On Startup

    - by Wonko the Sane
    Hello All, I have a problem - IE8 has suddenly stopped working. I was doing some development work, and suddenly IE8 crashed every time I tried to use it. I've rebooted, but still crash every time I try to open it. There is no real indication as to what has gone wrong. It just says "Internet Explorer has stopped working". I've tried almost everything that I've seen when I've Googled it: I disabled all Add-Ins via Manage Add-Ins, but it still crashes on startup* I re-registered IEPROXY.DLL * The thing I don't understand is that if I start from the Run box with the -extoff option, IE starts up. Isn't that the same as disabling all Add-Ins? Any ideas? Thanks, wTs

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