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  • SQL Server Installation Checklist

    - by Jonathan Kehayias
    The other night I was asked on Twitter by Todd McDonald (Twitter), for a build list for SQL Server 2005 and 2008.  My initial response was to provide a link to the SQL Server Build List Blog , which documents all of the builds of SQL Server and provides links to the KB articles associated with the builds.  However, this wasn’t what Todd was after, he actually wanted a reference for an installation checklist for SQL Server.  I have a number of these that I use in my job, and they vary...(read more)

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  • Oracle Coherence 3.5 : Create Internet-scale applications using Oracle's high-performance data grid

    - by frederic.michiara
    Oracle Coherence Coherence provides replicated and distributed (partitioned) data management and caching services on top of a reliable, highly scalable peer-to-peer clustering protocol. Coherence has no single points of failure; it automatically and transparently fails over and redistributes its clustered data management services when a server becomes inoperative or is disconnected from the network. When a new server is added, or when a failed server is restarted, it automatically joins the cluster and Coherence fails back services to it, transparently redistributing the cluster load. Coherence includes network-level fault tolerance features and transparent soft re-start capability to enable servers to self-heal. For the ones looking at an easy reading and first good approach to Oracle Coherence, I would recommend reading the following book : Overview of Oracle Coherence 3.5 Build scalable web sites and Enterprise applications using a market-leading data grid product Design and implement your domain objects to work most effectively with Coherence and apply Domain Driven Designs (DDD) to Coherence applications Leverage Coherence events and continuous queries to provide real-time updates to client applications Successfully integrate various persistence technologies, such as JDBC, Hibernate, or TopLink, with Coherence Filled with numerous examples that provide best practice guidance, and a number of classes you can readily reuse within your own applications This book is targeted to Architects and developers, and as in our team we're more about Solutions Architects than developers I found interest in this book as it help to understand better Oracle Coherence and its value. The only point I may not agree with the authors is that Oracle Coherence is not an alternative to Oracle RAC in providing High Availability, but combining both Oracle RAC and Oracle Coherence will help Architects and Customers to reach higher level of service and high-availability. This book is available on https://www.packtpub.com/oracle-coherence-3-5/book Need to find out about Table of contents : https://www.packtpub.com/toc/oracle-coherence-35-table-contents Discover a sample chapter : https://www.packtpub.com/sites/default/files/6125_Oracle%20Coherence_SampleChapter.pdf Read also articles from the Authors on http://www.packtpub.com/ : Working with Aggregators in Oracle Coherence 3.5 Working with Value Extractors and Simplifying Queries in Oracle Coherence 3.5 Querying the Data Grid in Coherence 3.5: Obtaining Query Results and Using Indexes Installing Coherence 3.5 and Accessing the Data Grid: Part 1 Installing Coherence 3.5 and Accessing the Data Grid: Part 2 For more information on Oracle Coherence : What Oracle Coherence Can Do for You... : http://www.oracle.com/technology/products/coherence/coherencedatagrid/coherence_solutions.html Oracle Coherence on OTN : http://www.oracle.com/technology/products/coherence/index.html Oracle Coherence Knowledge Base : http://coherence.oracle.com/display/COH/Oracle+Coherence+Knowledge+Base+Home

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  • Some thoughts on the Virtualization Feedback in the SSWUG Newsletters

    - by Jonathan Kehayias
    Last Thursday, March 25, 2010, the topic of Virtualization of SQL Server came up in the SSWUG Newsletter , with Steven Wynkoop asking if peoples perceptions and experiences have changed since the last time he covered virtualizing SQL Server.  I unfortunately missed the last coverage of this topic, but it appears from the newsletter that there was a general consensus that “low-traffic solution could be fine, but if you had a heavy hitting application, the net advise was to avoid a virtual environment...(read more)

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  • Some thoughts on the Virtualization Feedback in the SSWUG Newsletters

    - by Jonathan Kehayias
    Last Thursday, March 25, 2010, the topic of Virtualization of SQL Server came up in the SSWUG Newsletter , with Steven Wynkoop asking if peoples perceptions and experiences have changed since the last time he covered virtualizing SQL Server.  I unfortunately missed the last coverage of this topic, but it appears from the newsletter that there was a general consensus that “low-traffic solution could be fine, but if you had a heavy hitting application, the net advise was to avoid a virtual environment...(read more)

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  • Inexpensive and Open replacement for Cisco Tunnel-based EasyVPN with Cisco VPN 3000 Series

    - by Shoaibi
    I have a scenario when i have to establish peer-to-peer preshared key based VPN to a vendor. This vendor uses Cisco EasyVPN with Cisco VPN 3000 as access concentrator. I check the compatibility of the type of VPN from http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/prod_brochure0900aecd80582078.pdf and it appears that it would only work on cisco hardware. I am looking for a less inexpensive and possibly and open replacement to this to save my cost and also recommend to them. I have tried OpenVPN and thinking about vyatta.

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  • Making Use of Plan Explorer in my own Environment

    - by Jonathan Kehayias
    Back in October 2010, I briefly blogged about the SQL Sentry Plan Explorer in my blog post wrap up for SQL Bits 7 and how impressed I was with what I saw from a Alpha demo standpoint from Greg Gonzalez ( Blog | Twitter ) while I was at SQLBits 7 in York.  To be 100% honest and transparent, Greg gave me early access to this tool after discussing it at SQLBits 7, and I had the opportunity to test a number of pre-Beta releases where I was able to offer significant feedback and submit bugs in the...(read more)

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  • xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)

    - by mazgalici
    root@mazgalici:~# startx X.Org X Server 1.7.6 Release Date: 2010-03-17 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-28-server i686 Ubuntu Current Operating System: Linux mazgalici 2.6.18-194.26.1.el5.028stab079.2PAE #1 SMP Fri Dec 17 19:34:22 MSK 2010 i686 Kernel command line: quiet Build Date: 10 November 2010 11:25:26AM xorg-server 2:1.7.6-2ubuntu7.4 (For technical support please see ) Current version of pixman: 0.16.4 Before reporting problems, check to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Tue Jan 11 01:28:48 2011 (==) Using config directory: "/usr/lib/X11/xorg.conf.d" Fatal server error: xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory) Please consult the The X.Org Foundation support at http://wiki.x.org for help. Please also check the log file at "/var/log/Xorg.0.log" for additional information. ddxSigGiveUp: Closing log

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  • Brad's Sure DBA Checklist

    Sometimes, all a DBA needs, to help with day-to-day work, is a checklist of best-practices and dos and don’ts. It provides a handy reminder. Brad has come up with a new update to his famous checklist

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  • Slapd service won't start, unable to open pid file

    - by Foezjie
    I'm trying to set up a test LDAP-server for some developers but I'm running into some trouble. service slapd start errors so I run /usr/sbin/slapd -d 1 and this gives me the following error at the end: unable to open pid file "/var/run/ldap/slapd.pid": 13 (Permission denied) slapd destroy: freeing system resources. slapd stopped. The rights for /var/run/ldap are as follows: root@pec:/var/run/ldap# ls -ld drwxr-xr-x 2 openldap openldap 60 2012-07-04 20:45 So I don't get why there is still a permission denied. Syslog gives the following when running slapd: Jul 4 21:00:27 pec slapd[13758]: @(#) $OpenLDAP: slapd 2.4.21 (Dec 19 2011 15:40:04) $#012#011buildd@allspice:/build/buildd/openldap-2.4.21/debian/build/servers/slapd Jul 4 21:00:27 pec kernel: [8147247.203100] type=1503 audit(1341428427.953:64): operation="truncate" pid=13758 parent=20433 profile="/usr/sbin/slapd" requested_mask="::w" denied_mask="::w" fsuid=0 ouid=119 name="/var/run/ldap/slapd.pid" Can anyone point me in the right direction?

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  • Logging Bounced messages to a Database (Postfix with virtual domains/users)

    - by Gurunandan
    We have a postfix installation with a couple of virtual domains each with virtual users. These domains and users are mapped using a mysql database. I have been until now tracking bounces by parsing the postfix log file. I suspect there must be better and more efficient ways of doing this. I thought of three but I am not sure what is best: Write a Postfix content filter that logs the bounce and throws away the mail Use procmail - but I am not sure how procmail would work with virtual users who have no $HOME defined Write a script that POPs mail from mailboxes; parses and logs them and deletes the bounced email I would appreciate advise on which would be best from a maintenance point of view and efficient from conserving server resources point of view. Thanks

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  • How Do I Setup Multiple Stores Using Magento Like Their Demo?

    - by FergatROn
    I'm playing with Magento and I figured out how to create multiple websites and stores and store views, but when I go back to the home page it certainly doesn't look as cool as the Magento Demo (http://www.magento-mall.com/). Are the tabs something they did in the HTML and the store domains are really masking to the ugly store URL? Example: www.kayferg-store1.com = masks to beta.kayferg.com/magento/index.php/?___store=[STORE1] www.kayferg-store2.com = masks to beta.kayferg.com/magento/index.php/?___store=[STORE2]

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  • Binding MySQL to run from the public or private LAN IP address - which one is faster

    - by Lamin Barrow
    So we have 2 servers all running at the same web host. We have bind MySQL to listen on the public ip-address of the database server and the web server connects to it from the public ip. Both servers run on the same private network. Currently, the DB connect method from our php script takes about 3ms to connect to the MySQL database server host. My question is, would MySql data interaction from the web server be faster if we bind it to listen on the private lan address on the database server instead of the public IP? or is it the same regardless and it wont make a different. i have moved this question to server fault http://serverfault.com/questions/438156/binding-mysql-to-run-from-the-public-or-private-lan-ip-address-which-one-is-fa

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  • Open source alternative for Canonical Landscape?

    - by netvope
    From Canonical: Landscape is an easy-to-use systems management and monitoring service that enables you to manage multiple Ubuntu machines as easily as one through a simple Web-based interface. However, Landscape is not free. The RedHat counterpart Satellite has a free version called Spacewalk, but it doesn't work on Ubuntu. (There is an attempt to port Spacewalk to Debian, but it doesn't look like it's stable yet.) Are there any open source alternative to Landscape? Better yet, are there any Spacewalk-like software that works for both RedHat-based and Debian-based systems?

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  • Service Broker Solutions - Don't Forget the Basics

    - by AllenMWhite
    After finally getting a Service Broker solution implemented successfully, I'm really impressed with the technology, and frustrated how difficult it can be to implement and get it really working as expected. First, understand the technology. There are some great resources out there to help you get started. The first place to go is Klaus Aschenbrenner's book, the one that Greg Low reviewed this past week. It's an amazing resource and played a large part in my success. (I bought it for my Kindle, and...(read more)

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  • easy Switching to open folders on a mac

    - by Charles
    How do I easily switch to an open folder on a mac? In windows, which I'm used to using, I can see all my opened folders in my vertical taskbar, all i need to do to switch to another window is click on the folder in the task bar. There's no taskbar in mac, and when i have a lot of folders opened, ie, lots of finder windows, how can I switch between them? The way i'm doing it is, i put expose on an active corner and switch that way. However that's still damn hard, because first i have to bring up expose, and then find my window. The folders are placed in a random position between opened apps, the folders are not in a list, and on a big screen i have to scan the whole screen in order to find the one i want... etc. Is it really this hard just to switch to a different folder on a mac? :(

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  • trouble backing up large mysql database

    - by Patrick
    I have a wordpress MU database with something like 10,000+ tables for various user's blogs. I need to upgrade wordpress MU to newest version, but want to backup the DB before hand. PHPMyAdmin fails to even load the page when i click export. Ive tried going into the server (windows) and using dos command line: mysqldump -u USERNAME -p PASSWORD> BACKUP.sql but it hangs for a minute and gives me the error: error 23: out of resources when opinging file '.\USERNAME\wp_1037_links.MYD' (Errorcode: 24) when using LOCK Tables What am i doing wrong, or should i be doing? Is PHPMyAdmin right for something this size? Is there a better way of doing this than the two methods i tried? **Note that this is not my site, so any suggestions as to the setup of the DB ill have to run by the owner. Im just here for WP related crap, this is kind of out of scope for what i was brought on to do.

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  • Running a scheduled task as SYSTEM with console window open

    - by raoulsson
    I am auto creating scheduled tasks with this line within a batch windows script: schtasks /Create /RU SYSTEM /RP SYSTEM /TN startup-task-%%i /TR %SPEEDWAY_DIR%\%TARGET_DIR%%%i\%STARTUPFILE% /SC HOURLY /MO 1 /ST 17:%%i1:00 I wanted to avoid using specific user credentials and thus decided to use SYSTEM. Now, when checking in the taskmanagers process list or, even better, directly with the C:\> schtasks command itself, all is working well, the tasks are running as intended. However in this particular case I would like to have an open console window where I can see the log flying by. I know I could use C:\> tail -f thelogfile.log if I installed e.g. cygwin (on all machines) or some proprietary tools like Baretail on Windows. But since I only switch to these machines in case of trouble, I would prefer to start the scheduled task in such a way that every user immediately sees the log. Any chance? Thanks!

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  • Working with Sub-Optimal Disk Configurations (Making the best of what you’ve got)

    - by Jonathan Kehayias
    This is the first post in a what will be a series of posts on working with a sub-optimal disk configuration to squeeze as much performance out of it as possible.  You might ask what a Sub-Optimal Disk Configuration?  In this case it is a Dell Powervault MD3000 with 15 Seagate Barracuda ES.2 SAS 1 TB 7.2K RPM disks (Model Number ST31000640SS).  This equates to just under 14TB of raw storage that can configured into a number of RAID configurations.  In this case, the disk array...(read more)

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  • "Show In Finder" won't open a new finder window

    - by Gavin Miller
    The "Show In Finder" action isn't working on Mac OS X Mountain Lion. The problem has just started to occur all the time, before it was a bit sporadic, but now it happens all the time. Things that don't work: In the chrome Downloads page clicking any of the "Show in Finder" links. Right clicking a file in XCode and choosing "Show in Finder" Things that work: open . in terminal command-n after command tabbing to Finder. Things I've tried to fix the issue: Opt - Right Click finder in the dock and relauching Restarting my computer Anybody ever experienced this issue?

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  • Can't connect to database in dreamweaver

    - by ReallyGoodPie
    I used to have this error in Dreamweaver CS6 and I would simply place the _mmServerScripts folder into the root of my local website. Every time I go to select a database it get this error: I have been searching the net for at least 2 hours now trying to find a solution. It is becoming quite annoying. Everything is working perfectly fine. All the server settings are 100% correct. I have seen various videos on youtube where the user is using a mac and they simply go and grab the _mmServerScripts folder from their dreamweaver folder but I can't seem to locate this. I used to simply use _mmServerScripts folder from dreamweaver CS5.5 and it would end up working perfectly. I don't know how to fix the issue so does anybody have any idea?

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  • Programming logic to group a users activities like Facebook

    - by Chris Dowdeswell
    So I am trying to develop an activity feed for my site. Basically If I UNION a bunch of activities into a feed I would end up with something like the following. Chris is now friends with Mark Chris is now friends with Dave What I want though is a neater way of grouping these similar posts so the feed doesn't give information overload... E.g. Chris is now friends with Mark, Dave and 4 Others Any ideas on how I can approach this logically? I am using Classic ASP on SQL server. Here is the UNION statement I have so far: SELECT U.UserID As UserID, L.UN As UN,Left(U.UID,13) As ProfilePic,U.Fname + ' ' + U.Sname As FullName, 'said ' + WP.Post AS Activity, WP.Ctime FROM Users AS U LEFT JOIN Logins L ON L.userID = U.UserID LEFT OUTER JOIN WallPosts AS WP ON WP.userID = U.userID WHERE WP.Ctime IS NOT NULL UNION SELECT U.UserID As UserID, L.UN As UN,Left(U.UID,13) As ProfilePic,U.Fname + ' ' + U.Sname As FullName, 'commented ' + C.Comment AS Activity, C.Ctime FROM Users AS U LEFT JOIN Logins L ON L.userID = U.UserID LEFT OUTER JOIN Comments AS C ON C.UserID = U.userID WHERE C.Ctime IS NOT NULL UNION SELECT U.UserID As UserID, L.UN As UN,Left(U.UID,13) As ProfilePic, U.Fname + ' ' + U.Sname As FullName, 'connected with <a href="/profile.asp?un='+(SELECT Logins.un FROM Logins WHERE Logins.userID = Cn.ToUserID)+'">' + (SELECT Users.Fname + ' ' + Users.Sname FROM Users WHERE userID = Cn.ToUserID) + '</a>' AS Activity, Cn.Ctime FROM Users AS U LEFT JOIN Logins L ON L.userID = U.UserID LEFT OUTER JOIN Connections AS Cn ON Cn.UserID = U.userID WHERE CN.Ctime IS NOT NULL

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  • jQuery dialog open causes page to continuously lengthen in IE [closed]

    - by Michael
    I made my first dialog and AJAX work in jQuery and finally got everything working great - the dialog has a few buttons, cancel, save, and generate to get a new random string from the server. The problem is when I make the dialog modal (graying out the rest of the window), then in IE the scrollbars appear and sometimes keep moving as the page continuously extends down. This happens whenever the dialog is opened (it's not initially set to open) but not everytime. I can't think of any part of my code that would do this as I don't even have a JS loop anywhere. Googling for this didn't help. It seems like an IE vs jQuery quirk but any ideas?

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  • SQL Saturday is Coming to Nashville! Won't You?

    - by KKline
    How 'Bout a Little Context? Let me be direct with you. I love SQL Saturday . If it were a woman , I'd marry it. (Avoiding all extraneous thoughts of what my real wife would say, etc etc). Check out this fun Flickr Feed from the recent SQL Saturday in Chicago or these picks by Jorge Segara ( blog | twitter ) to see the sort of fun that's in store. But who can argue with a day of free SQL Server training and a chance to network with great presenters and a wide swath of your peers? Keynotes are more...(read more)

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  • In retrospect, has it been a good idea to use three-valued logic for SQL NULL comparisons?

    - by Heinzi
    In SQL, NULL means "unknown value". Thus, every comparison with NULL yields NULL (unknown) rather than TRUE or FALSE. From a conceptional point of view, this three-valued logic makes sense. From a practical point of view, every learner of SQL has, one time or another, made the classic WHERE myField = NULL mistake or learned the hard way that NOT IN does not do what one would expect when NULL values are present. It is my impression (please correct me if I am wrong) that the cases where this three-valued logic helps (e.g. WHERE myField IS NOT NULL AND myField <> 2 can be shortened to WHERE myField <> 2) are rare and, in those cases, people tend to use the longer version anyway for clarity, just like you would add a comment when using a clever, non-obvious hack. Is there some obvious advantage that I am missing? Or is there a general consensus among the development community that this has been a mistake?

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