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• Extract reply to addresses from all emails in an outlook folder

  - by RodH257

  I've got to send a bulk email out to a bunch of people in reply to emails they sent me. I've got all the original emails stored in a single outlook folder. I want to extract all of the reply-to addresses from the emails in that folder so I can send an email to all of them. http://thetechieguy.wordpress.com/2008/04/22/extracting-email-address-from-outlook-2007-folder/ shows you how to export the FROM address of these emails, however a large amount of them came from a web service that sends emails 'on behalf of' the person I'm trying to mail to. So I need the reply-to address, and the export wizard doesn't do that. Does anyone have a tip on how to do this? This is Outlook 2007 on Exchange 2010.

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• SQL SERVER – Find Details for Statistics of Whole Database – DMV – T-SQL Script

  - by pinaldave

  I was recently asked is there a single script which can provide all the necessary details about statistics for any database. This question made me write following script. I was initially planning to use sp_helpstats command but I remembered that this is marked to be deprecated in future. Again, using DMV is the right thing to do moving forward. I quickly wrote following script which gives a lot more information than sp_helpstats. USE AdventureWorks GO SELECT DISTINCT OBJECT_NAME(s.[object_id]) AS TableName, c.name AS ColumnName, s.name AS StatName, s.auto_created, s.user_created, s.no_recompute, s.[object_id], s.stats_id, sc.stats_column_id, sc.column_id, STATS_DATE(s.[object_id], s.stats_id) AS LastUpdated FROM sys.stats s JOIN sys.stats_columns sc ON sc.[object_id] = s.[object_id] AND sc.stats_id = s.stats_id JOIN sys.columns c ON c.[object_id] = sc.[object_id] AND c.column_id = sc.column_id JOIN sys.partitions par ON par.[object_id] = s.[object_id] JOIN sys.objects obj ON par.[object_id] = obj.[object_id] WHERE OBJECTPROPERTY(s.OBJECT_ID,'IsUserTable') = 1 AND (s.auto_created = 1 OR s.user_created = 1); If you have better script to retrieve information about statistics, please share here and I will publish it with due credit. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Statistics, Statistics

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• Ameristar Wins with Oracle GoldenGate’s Heterogeneous Real-Time Data Integration

  - by Irem Radzik

  Today we announced a press release about another successful project with Oracle GoldenGate. This time at Ameristar. Ameristar is a casino gaming company and needed a single data integration solution to connect multiple heterogeneous systems to its Teradata data warehouse. The project involves integration of Ameristar’s promotional and gaming data from 14 data sources across its 7 casino hotel properties in real time into a central Teradata data warehouse. The source systems include the Aristocrat gaming and MGT promotional management platforms running on Microsoft SQL Server 2000 databases. As you can notice, there was no Oracle Database involved in this project, but Ameristar’s IT leadership knew that  GoldenGate’s strong heterogeneous and real-time data integration capabilities is the right technology for their data warehousing project. With GoldenGate Ameristar was able to reduce data latency to the enterprise data warehouse, and use this real-time customer information for marketing teams in improving overall customer experience. Ameristar customers receive more targeted and timely campaign offers, and the company has more up-to-date visibility into financial metrics of the company. One other key benefit the company experienced with GoldenGate is in operational costs. The previous data capture solution Ameristar used was trigger based and required a lot of effort to manage. They needed dedicated IT staff to maintain it. With GoldenGate, the solution runs seamlessly without needing a fully-dedicated staff, giving the IT team at Ameristar more resources for their other IT projects. If you want to learn more about GoldenGate and the latest features for Oracle Database and non-Oracle databases, please watch our on demand webcast about Oracle GoldenGate 11g Release 2.

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• Vertex 2 SSD is running faster than my Vertex 3 SSD?

  - by Kairan

  I used Acronis Disk Director to do a direct clone of my C:\ windows 7 x64 drive from my Vertex 2 to my new Vertex 3 SSD (Just to show the drive software winstall everything is identical.) I ran a performance test on Windows using the Windows Experience Index. The rating I am receiving when booting on the Vertex 2 is 7.5 While I am getting only a rating for the Vertex 3 of 6.9 My understanding is that the read/write speeds of the Vertex 2 is only up to 250MB/sec while the Vertex 3 is up to 500MB/sec. Copying a single file (3GB in size) from the Vertex 3 to itself was getting speed of approx 70-80MB/sec This speed is no better (maybe worse) than what I got from the Vertex 2 I am connected via the SATA 3 port on the motherboard, using an SATA 3 cable Is this issue caused by the drive cloning? Do I have a bad SSD?

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• SQL SERVER – Plan Cache and Data Cache in Memory

  - by pinaldave

  I get following question almost all the time when I go for consultations or training. I often end up providing the scripts to my clients and attendees. Instead of writing new blog post, today in this single blog post, I am going to cover both the script and going to link to original blog posts where I have mentioned about this blog post. Plan Cache in Memory USE AdventureWorks GO SELECT [text], cp.size_in_bytes, plan_handle FROM sys.dm_exec_cached_plans AS cp CROSS APPLY sys.dm_exec_sql_text(plan_handle) WHERE cp.cacheobjtype = N'Compiled Plan' ORDER BY cp.size_in_bytes DESC GO Further explanation of this script is over here: SQL SERVER – Plan Cache – Retrieve and Remove – A Simple Script Data Cache in Memory USE AdventureWorks GO SELECT COUNT(*) AS cached_pages_count, name AS BaseTableName, IndexName, IndexTypeDesc FROM sys.dm_os_buffer_descriptors AS bd INNER JOIN ( SELECT s_obj.name, s_obj.index_id, s_obj.allocation_unit_id, s_obj.OBJECT_ID, i.name IndexName, i.type_desc IndexTypeDesc FROM ( SELECT OBJECT_NAME(OBJECT_ID) AS name, index_id ,allocation_unit_id, OBJECT_ID FROM sys.allocation_units AS au INNER JOIN sys.partitions AS p ON au.container_id = p.hobt_id AND (au.TYPE = 1 OR au.TYPE = 3) UNION ALL SELECT OBJECT_NAME(OBJECT_ID) AS name, index_id, allocation_unit_id, OBJECT_ID FROM sys.allocation_units AS au INNER JOIN sys.partitions AS p ON au.container_id = p.partition_id AND au.TYPE = 2 ) AS s_obj LEFT JOIN sys.indexes i ON i.index_id = s_obj.index_id AND i.OBJECT_ID = s_obj.OBJECT_ID ) AS obj ON bd.allocation_unit_id = obj.allocation_unit_id WHERE database_id = DB_ID() GROUP BY name, index_id, IndexName, IndexTypeDesc ORDER BY cached_pages_count DESC; GO Further explanation of this script is over here: SQL SERVER – Get Query Plan Along with Query Text and Execution Count Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Optimization, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL Tagged: SQL Memory

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• Regular Expressions Quick Reference

  - by Jan Goyvaerts

  The Regular-Expressions.info website has a new quick reference to regular expressions that lists all of the regex syntax in one single table along with a link to the tutorial section that explains the syntax. The quick reference is ordered by syntax whereas the full reference tables are ordered by feature. There are multiple entries for some of the syntax as different regex flavors may use the same syntax for different features. Use the quick reference if you’ve seen some syntax in somebody else’s regex and you have no idea what feature that syntax is for. Use the full reference tables if you already know the feature you want but forgot which syntax to use. Of course, an even quicker reference is to paste your regex into RegexBuddy, select the application you’re working with, and click on the part of the regex you don’t understand. RegexBuddy then selects the corresponding node in its regex tree which summarizes exactly what the syntax you clicked on does in your regex. If you need more information, press F1 or click the Explain Token button to open the relevant page in the regex tutorial in RegexBuddy’s help file.

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• Dynamic group membership to work around no nested security group support for Active Directory

  - by Bernie White

  My problem is that I have a number of network administration applications like SAN switches that do not support nested groups from Active Directory Domain Services (AD DS). These legacy administration applications use either LDAP or LDAPS. I am fairly sure I can use Active Directory Lightweight Directory Services (AD LDS) and possibly Windows Authorization Manager to work around this issue; however I am not really sure where to start. I want to end up with: A single group that can be queried over LDAP/LDAPS for all it’s direct members LDAP proxy for user name and password credentials to AD DS Easy way to admin the group, ideally the group would aggregate the nested membership in AD DS. a native solution using freely available components from the Windows stack. If you have any suggestions or solutions that you have previously used to solve this issue please let me know.

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• Is there a taskbar for OS X?

  - by Paul Biggar

  I'd like to permanently see a clickable list of windows I have open, in the same way that the taskbar allows in Windows. Can I do this on Mac? Some details: i have many virtual desktops (spaces), so often a single application has windows on many of them. I often have multiple windows of each application, such as the terminal or browser, on the same virtual desktop I have multiple monitors, if it matters. Edit: When I say 'permanently see a clickable list of windows I have open' I mean that I want to see every window I have open, and I'd like to be able to click on each one to open that window. I'm not looking for the newer behaviour where tasks are clustered by application.

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• Wrong DNS query in Active directory network with NetBIOS enabled client

  - by koankoder

  The setup: Active Directory is enabled on the network (abcd.com) We have a single character host name (1.abcd.com) one of the desktop has an old XP with NetBIOS stuff enabled The Problem Whenever we query for any host name from the XP machine, the first character alone is taken for DNS query (one.abcd.com will query for o.abcd.com, two.abcd.com will query for t.abcd.com) Even if we give some IP, the application queries with numeric prefix (10.x.x.x will query for 1.abcd.com).Since we already have 1.abcd.com, all query and traffic ends up in 1.abcd.com After discussion with network guys, it seems netbios DNS queries by having some prefix etc. but none of them is actually sure on what is happening. Is there any docs which can explain this behavior ? Is this valid behavior in NetBIOS environment ?

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• Strange error when Bootcamp attempts to create partition for Windows

  - by mozillalives

  I get a strange error when I tell Bootcamp to create a partition for Windows. I get to the Create a Partition stage. I select 20GB for Windows leaving 91GB (39GB free) for OS X. I then click Partition and it gives me the following error The disk cannot be partitioned because some files cannot be moved. Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again. My disk is formatted in Mac OS Extended (Journaled), I have closed all applications (besides Bootcamp Assistant) and I have even restarted and tried again to see if that might help. Nothing. I can't get it to partition. I also tried to create the partition using Disk Utility and I got the following error Partition failed Partition failed with the error: Could not modify partition map because filesystem verification failed Any ideas? BTW - I am running OS X 10.6.2

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• Accessing and Updating Data in ASP.NET: Filtering Data Using a CheckBoxList

  Filtering Database Data with Parameters, an earlier installment in this article series, showed how to filter the data returned by ASP.NET's data source controls. In a nutshell, the data source controls can include parameterized queries whose parameter values are defined via parameter controls. For example, the SqlDataSource can include a parameterized SelectCommand, such as: SELECT * FROM Books WHERE Price > @Price. Here, @Price is a parameter; the value for a parameter can be defined declaratively using a parameter control. ASP.NET offers a variety of parameter controls, including ones that use hard-coded values, ones that retrieve values from the querystring, and ones that retrieve values from session, and others. Perhaps the most useful parameter control is the ControlParameter, which retrieves its value from a Web control on the page. Using the ControlParameter we can filter the data returned by the data source control based on the end user's input. While the ControlParameter works well with most types of Web controls, it does not work as expected with the CheckBoxList control. The ControlParameter is designed to retrieve a single property value from the specified Web control, but the CheckBoxList control does not have a property that returns all of the values of its selected items in a form that the CheckBoxList control can use. Moreover, if you are using the selected CheckBoxList items to query a database you'll quickly find that SQL does not offer out of the box functionality for filtering results based on a user-supplied list of filter criteria. The good news is that with a little bit of effort it is possible to filter data based on the end user's selections in a CheckBoxList control. This article starts with a look at how to get SQL to filter data based on a user-supplied, comma-delimited list of values. Next, it shows how to programmatically construct a comma-delimited list that represents the selected CheckBoxList values and pass that list into the SQL query. Finally, we'll explore creating a custom parameter control to handle this logic declaratively. Read on to learn more! Read More >

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• How do I PXE boot multiple Windows 7 desktops off the same image?

  - by Matt

  Some years ago in my uni days I recall that the uni labs booted windows nt over the network. There was a shared drive for your own stuff, and other than that any changes you did to the running OS were reset when you restarted the machine. Now I'd like to be able to do the same thing with Windows 7. I have found some howto's for this using iSCSI, but I don't want an iSCSI disk for every single PC, I'm wanting one image for multiple PC's. I've also found PXE Boot setups for installing windows locally, but that's not what I want either. How would I go about setting up what I had at uni but with Windows 7 as a OS to netboot? i.e. How do I netboot windows 7 images? I do not want to netboot a windows 7 installer to a pc to install windows locally, I want to run a windows 7 image from memory/network.

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• How do you persuade users to abandon their personal folders?

  - by thing2k

  Towards the end of last year we started using Mimecast services, in particular their cloud base e-mail archiving. Since then we’ve been rolling out the Mimecast Services for Outlook (MSO) Add-in. We’ve informed the users that we will be give them training in the next few Months, and we do not require them to use it, but my boss stated that we are getting rid of Personal Folders (pst files), by putting them into Mimecast. Unsurprisingly this did cause something of a backlash. Though really who likes change. I know the IT reasons for getting rid of Personal Folders (inefficient, unreliable, single access, etc), but from an average user’s perspective, unless they have had one fail on them, they see them as simple and only way to archive e-mail when their 200Mb mailbox is full. So what can I say to the users, to get them to understand why Personal Folders are not the best solution?

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• IIS7 URL Rewrite for URL with &rsquo;

  - by blizz

  I'm trying to redirect the following URL in IIS7 using the URL Rewrite module: Category/Cat-3/Objectives-of-Pre-Maintenance/WHAT&rsquo;S-THE-STORY-ON-LOW-CARB-DIETS-AND-EXERCISE-.aspx but for the life of me I can not get it. I tried replacing the &rsquo; with an actual single quote, and that worked fine! But for the purpose of this redirect, I need the HTML code for the quote, and not the quote itself. Here is the rule from web config: <rule name="Redirect" patternSyntax="ECMAScript" stopProcessing="true"> <match url="^Category/Cat-3/Objectives-of-Pre-Maintenance/WHAT&amp;rsquo;S-THE-STORY-ON-LOW-CARB-DIETS-AND-EXERCISE-\.aspx" /> <conditions> <add input="{HTTP_HOST}" pattern="www.example.com" /> </conditions> <action type="Redirect" url="http://www.example.com/redirecturl/" appendQueryString="false" /> </rule> Any ideas would be very helpful! Thanks

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• SQL SERVER – 2011 – SEQUENCE is not IDENTITY

  - by pinaldave

  Yesterday I posted blog post on the subject SQL SERVER – 2011 – Introduction to SEQUENCE – Simple Example of SEQUENCE and I received comment where user was not clear about difference between SEQUENCE and IDENTITY. The reality is that SEQUENCE not like IDENTITY. There is very clear difference between them. Identity is about single column. Sequence is always incrementing and it is not dependent on any table. Here is the quick example of the same. USE AdventureWorks2008R2 GO CREATE SEQUENCE [Seq] AS [int] START WITH 1 INCREMENT BY 1 MAXVALUE 20000 GO -- Run five times SELECT NEXT VALUE FOR Seq AS SeqNumber; SELECT NEXT VALUE FOR Seq AS SeqNumber; SELECT NEXT VALUE FOR Seq AS SeqNumber; SELECT NEXT VALUE FOR Seq AS SeqNumber; SELECT NEXT VALUE FOR Seq AS SeqNumber; GO -- Clean Up DROP SEQUENCE [Seq] GO Here is the resultset. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• SNMP based network discovery (switches), device (ports on switches) power management

  - by SaM

  In a enterprise network, what would be the right way to generate a list of switches (SNMP managed) Is it reasonable to ask the organization to supply a list such as this: Switch name IP Address of switch Location SNMP community strings Or are there standard ways to run discovery scans - UDP broadcasts? After having generated a repository such as the above; given a single switch, how to query it for the list of all devices attached to it? Finally, how to selectively power down/power up ports? (remotely - using SNMP) Platform is going to be .NET based (C#) and the library being used is SharpSNMP

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• Easy BCD Help: Dual boot Win7 and Ubuntu 11.10 -- "Add new Entry" for Ubuntu

  - by Bradley Peterson

  I first had Ubuntu 11.10 installed on a single partition on my 750GB hard drive. I then partitioned the hard drive to 500GB (for Ubuntu) in ext4 format (what it already was from the clean install of Ubuntu)....and 250GB for Win7 in NFTS format. Then I installed Win7 onto that 250GB partition. Installation went smoothly and I was successfully booted into Win7 and setting everything up. After I was done doing all the stupid updates from Microsof, I thought I was done and I wanted to go back to Ubuntu. This is where the problem starts Of course I reboot and it goes directly to Win7. I research and find that Win7 has overwritten the Ubuntu bootloader, etc etc.. I don't fully understand it. I download EasyBCD 2.1.2 In EasyBCD, I select "Add New Entry" and select "Linux/BSD" and change the type to "GRUB 2" and name it "Ubuntu" Next, I go to "BCD Deployment" and select "Install the Windows Vista/7 bootloader to the MBR" and click "Write MBR" I reboot, select "Ubuntu" and the purple screen comes up, but NOTHING HAPPENS. If I hit Ctrl+Alt+Del, it goes to the Login menu where it acts normal for about 10-15 seconds, then freezes. It does this repeatedly every time. MY QUESTION: What's wrong here? Why can't I load Ubuntu now? Am I going to have to reinstall Ubuntu with Windows, then set up the bootloader with EasyBCD instead of Ubuntu, THEN Win7? Any and all help is appreciated! -Brad

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• To the world, with love

  - by kaleidoscope

  kaleidoscope 1817, lit. "observer of beautiful forms," coined by its inventor, Sir David Brewster (1781-1868), from Gk. kalos "beautiful" + eidos "shape" (see -oid) + -scope, on model of telescope, etc. Figurative meaning "constantly changing pattern" is first attested 1819 in Lord Byron, whose publisher had sent him one. Let’s start by setting some context here. “We” are not a single blogger but a bunch of like minded people who will be contributing to this blog. We belong to a team led by some folks possessed by innovation, and this has rubbed on us in a good way. How it started It all started with initiative from Girish, A. A big thank you, goes to him. To get it straight from the horse’ mouth: What is it? - Everybody (as per the published schedule) post a small write-up (not more than say 5/6 lines) regarding any Azure related concept. - We shall consolidate all these mails (which would be 5/week) and quickly discuss/brain storm about it, end of the week i.e. on Fridays. What’s the benefit? - This should make our basic Azure concepts rock-solid. - As part of this exercise, we will have a very good collection of Azure FAQs. As the team grew stronger, so did the contributions and after almost 3 months of regular contributions and weekly discussions we thought of sharing the content with the world at large. Afterall we are IT folks and the big I in IT is there for a reason. :) The road ahead We will post the entire collection as time permits. Tagged by contributor. Going forward each contributor will post individually adding his/her specific tag. Get blogging!!

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• Don’t miss the Oracle Webcast: Enabling Effective Decision Making with “One Source of the Truth” at BB&T

  - by Rob Reynolds

  Webcast Date:  September 17th, 2012  -  9 a.m. PT / 12 p.m. ET  BB&T Corporation (NYSE: BBT) is one of the largest financial services holding companies in the United States. One of their IT goals is to provide “one source of truth” to enable more effective decision making at the corporate and local level. By using Oracle’s Hyperion Enterprise Planning Suite and Oracle Essbase, BB&T streamlined their planning and financial reporting processes. Large volumes of data were consolidated into a single reporting solution giving stakeholders more timely and accurate information. By providing a central and automated collaboration tool, BB&T is able to prepare more accurate financial forecasts, rapidly consolidate large amounts of data, and make more informed decisions. Join us on September 17th for a live webcast to hear BB&T’s journey to achieve “One Source of Truth” and learn how Oracle’s Hyperion Planning Suite and Oracle’s Essbase allows you to: Adopt best practices like rolling forecasts and driver-based planning Reduce the time and effort dedicated to the annual budget process Reduce the time and effort dedicated to the annual budget process Remove forecasting uncertainty with predictive modeling capabilities Rapidly analyze shifting market conditions with a powerful calculation engine Prioritize resources effectively with complete visibility into all potential risks Link strategy and execution with integrated strategic, financial and operational planning Register here.

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• Don't Use "Static" in C#?

  - by Joshiatto

  I submitted an application I wrote to some other architects for code review. One of them almost immediately wrote me back and said "Don't use "static". You can't write automated tests with static classes and methods. "Static" is to be avoided." I checked and fully 1/4 of my classes are marked "static". I use static when I am not going to create an instance of a class because the class is a single global class used throughout the code. He went on to mention something involving mocking, IOC/DI techniques that can't be used with static code. He says it is unfortunate when 3rd party libraries are static because of their un-testability. Is this other architect correct? update: here is an example: APIManager - this class keeps dictionaries of 3rd party APIs I am calling along with the next allowed time. It enforces API usage limits that a lot of 3rd parties have in their terms of service. I use it anywhere I am calling a 3rd party service by calling Thread.Sleep(APIManager.GetWait("ProviderXYZ")); before making the call. Everything in here is thread safe and it works great with the TPL in C#.

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• GPLv2 - Multiple AI chess engines to bypass GPL

  - by Dogbert

  I have gone through a number of GPL-related questions, the most recent being this one: http://stackoverflow.com/questions/3248823/legal-question-about-the-gpl-license-net-dlls/3249001#3249001 I'm trying to see how this would work, so bear with me. I have a simple GUI interface for a game of Chess. It essentially can send/receive commands to/from an external chess engine (ie: Tong, Fruit, etc). The application/GUI is similar in nature to XBoard ( http://www.gnu.org/software/xboard/ ), but was independently designed. After going through a number of threads on this topic, it seems that the FSF considers dynamically linking against a GPLv2 library as a derivative work, and that by doing so, the GPLv2 extends to my proprietary code, and I must release the source to my entire project. Other legal precedents indicate the opposite, and that dynamic linking doesn't cause the "viral" effect of the GPL to propagate to my proprietary code. Since there is no official consensus that can give a "hard-and-fast" answer to the dynamic linking question, would this be an acceptable alternative: I build my chess GUI so that it sends/receives the chess engine AI logic as text commands from an external interface library that I write The interface library I wrote itself is then released under the GPL The interface library is only used to communicate via a generic text pipe to external command-line chess engines The chess engine itself would be built as a command-line utility rather than as a library of any sort, and just sends strings in the Universal Chess Interface of Chess Engine Communication Protocol ( http://en.wikipedia.org/wiki/Chess_Engine_Communication_Protocol ) format. The one "gotcha" is that the interface library should not be specific to one single GPL'ed chess engine, otherwise the entire GUI would be "entirely dependent" on it. So, I just make my interface library so that it is able to connect to any command-line chess engine that uses a specific format, rather than just one unique engine. I could then include pre-built command-line-app versions of any of the chess engines I'm using. Would that sort of approach allow me to do the following: NOT release the source for my UI Release the source of the interface library I built (if necessary) Use one or more chess engines and bundle them as external command-line utilities that ship with a binary version of my UI Thank you.

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• How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk

  - by The Geek

  We’ve covered loads of different anti-virus, Linux, and other boot disks that help you repair or recover your system, but why limit yourself to just one? Here’s how to combine your favorite repair disks together to create the ultimate repair toolkit for broken Windows systems—all on a single flash drive. The ones we’ve covered already? Here’s a quick list of all the ways you can recover your system with a rescue disk: How to Use the Avira Rescue CD to Clean Your Infected PC How to Use the BitDefender Rescue CD to Clean Your Infected PC How to Use the Kaspersky Rescue Disk to Clean Your Infected PC Change or Reset Windows Password from a Ubuntu Live CD The 10 Cleverest Ways to Use Linux to Fix Your Windows PC Change Your Forgotten Windows Password with the Linux System Rescue CD Use Ubuntu Live CD to Backup Files from Your Dead Windows Computer If you need to clean up an infected system, we’d absolutely recommend the BitDefender CD, since it’s auto-updating. Best bet? Create your ultimate boot disk with as many of the different utilities as your flash drive can hold Latest Features How-To Geek ETC How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 How to Disable Caps Lock Key in Windows 7 or Vista How to Use the Avira Rescue CD to Clean Your Infected PC Luigi Installs Any OS on Google’s Cr-48 Notebook DIY iPad Stylus Offers Pen-Based Interaction on the Cheap Serene Blue Ubuntu Wallpaper for Your Desktop Enjoy Old School Style Video Game Fun with Chicken Invaders Hide the Twitter “Litter” in Twitter’s Sidebar Area (Chrome and Iron) Public Domain Day: Reflections on Copyright and the Importance of Public Domain

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• Investigation: Can different combinations of components effect Dataflow performance?

  - by jamiet

  Introduction The Dataflow task is one of the core components (if not the core component) of SQL Server Integration Services (SSIS) and often the most misunderstood. This is not surprising, its an incredibly complicated beast and we’re abstracted away from that complexity via some boxes that go yellow red or green and that have some lines drawn between them. Example dataflow In this blog post I intend to look under that facade and get into some of the nuts and bolts of the Dataflow Task by investigating how the decisions we make when building our packages can affect performance. I will do this by comparing the performance of three dataflows that all have the same input, all produce the same output, but which all operate slightly differently by way of having different transformation components. I also want to use this blog post to challenge a common held opinion that I see perpetuated over and over again on the SSIS forum. That is, that people assume adding components to a dataflow will be detrimental to overall performance. Its not surprising that people think this –it is intuitive to think that more components means more work- however this is not a view that I share. I have always been of the opinion that there are many factors affecting dataflow duration and the number of components is actually one of the less important ones; having said that I have never proven that assertion and that is one reason for this investigation. I have actually seen evidence that some people think dataflow duration is simply a function of number of rows and number of components. I’ll happily call that one out as a myth even without any investigation!  The Setup I have a 2GB datafile which is a list of 4731904 (~4.7million) customer records with various attributes against them and it contains 2 columns that I am going to use for categorisation: [YearlyIncome] [BirthDate] The data file is a SSIS raw format file which I chose to use because it is the quickest way of getting data into a dataflow and given that I am testing the transformations, not the source or destination adapters, I want to minimise external influences as much as possible. In the test I will split the customers according to month of birth (12 of those) and whether or not their yearly income is above or below 50000 (2 of those); in other words I will be splitting them into 24 discrete categories and in order to do it I shall be using different combinations of SSIS’ Conditional Split and Derived Column transformation components. The 24 datapaths that occur will each input to a rowcount component, again because this is the least resource intensive means of terminating a datapath. The test is being carried out on a Dell XPS Studio laptop with a quad core (8 logical Procs) Intel Core i7 at 1.73GHz and Samsung SSD hard drive. Its running SQL Server 2008 R2 on Windows 7. The Variables Here are the three combinations of components that I am going to test:     One Conditional Split - A single Conditional Split component CSPL Split by Month of Birth and income category that will use expressions on [YearlyIncome] & [BirthDate] to send each row to one of 24 outputs. This next screenshot displays the expression logic in use: Derived Column & Conditional Split - A Derived Column component DER Income Category that adds a new column [IncomeCategory] which will contain one of two possible text values {“LessThan50000”,”GreaterThan50000”} and uses [YearlyIncome] to determine which value each row should get. A Conditional Split component CSPL Split by Month of Birth and Income Category then uses that new column in conjunction with [BirthDate] to determine which of the same 24 outputs to send each row to. Put more simply, I am separating the Conditional Split of #1 into a Derived Column and a Conditional Split. The next screenshots display the expression logic in use: DER Income Category         CSPL Split by Month of Birth and Income Category       Three Conditional Splits - A Conditional Split component that produces two outputs based on [YearlyIncome], one for each Income Category. Each of those outputs will go to a further Conditional Split that splits the input into 12 outputs, one for each month of birth (identical logic in each). In this case then I am separating the single Conditional Split of #1 into three Conditional Split components. The next screenshots display the expression logic in use: CSPL Split by Income Category         CSPL Split by Month of Birth 1& 2       Each of these combinations will provide an input to one of the 24 rowcount components, just the same as before. For illustration here is a screenshot of the dataflow containing three Conditional Split components: As you can these dataflows have a fair bit of work to do and remember that they’re doing that work for 4.7million rows. I will execute each dataflow 10 times and use the average for comparison. I foresee three possible outcomes: The dataflow containing just one Conditional Split (i.e. #1) will be quicker There is no significant difference between any of them One of the two dataflows containing multiple transformation components will be quicker Regardless of which of those outcomes come to pass we will have learnt something and that makes this an interesting test to carry out. Note that I will be executing the dataflows using dtexec.exe rather than hitting F5 within BIDS. The Results and Analysis The table below shows all of the executions, 10 for each dataflow. It also shows the average for each along with a standard deviation. All durations are in seconds. I’m pasting a screenshot because I frankly can’t be bothered with the faffing about needed to make a presentable HTML table. It is plain to see from the average that the dataflow containing three conditional splits is significantly faster, the other two taking 43% and 52% longer respectively. This seems strange though, right? Why does the dataflow containing the most components outperform the other two by such a big margin? The answer is actually quite logical when you put some thought into it and I’ll explain that below. Before progressing, a side note. The standard deviation for the “Three Conditional Splits” dataflow is orders of magnitude smaller – indicating that performance for this dataflow can be predicted with much greater confidence too. The Explanation I refer you to the screenshot above that shows how CSPL Split by Month of Birth and salary category in the first dataflow is setup. Observe that there is a case for each combination of Month Of Date and Income Category – 24 in total. These expressions get evaluated in the order that they appear and hence if we assume that Month of Date and Income Category are uniformly distributed in the dataset we can deduce that the expected number of expression evaluations for each row is 12.5 i.e. 1 (the minimum) + 24 (the maximum) divided by 2 = 12.5. Now take a look at the screenshots for the second dataflow. We are doing one expression evaluation in DER Income Category and we have the same 24 cases in CSPL Split by Month of Birth and Income Category as we had before, only the expression differs slightly. In this case then we have 1 + 12.5 = 13.5 expected evaluations for each row – that would account for the slightly longer average execution time for this dataflow. Now onto the third dataflow, the quick one. CSPL Split by Income Category does a maximum of 2 expression evaluations thus the expected number of evaluations per row is 1.5. CSPL Split by Month of Birth 1 & CSPL Split by Month of Birth 2 both have less work to do than the previous Conditional Split components because they only have 12 cases to test for thus the expected number of expression evaluations is 6.5 There are two of them so total expected number of expression evaluations for this dataflow is 6.5 + 6.5 + 1.5 = 14.5. 14.5 is still more than 12.5 & 13.5 though so why is the third dataflow so much quicker? Simple, the conditional expressions in the first two dataflows have two boolean predicates to evaluate – one for Income Category and one for Month of Birth; the expressions in the Conditional Split in the third dataflow however only have one predicate thus they are doing a lot less work. To sum up, the difference in execution times can be attributed to the difference between: MONTH(BirthDate) == 1 && YearlyIncome <= 50000 and MONTH(BirthDate) == 1 In the first two dataflows YearlyIncome <= 50000 gets evaluated an average of 12.5 times for every row whereas in the third dataflow it is evaluated once and once only. Multiply those 11.5 extra operations by 4.7million rows and you get a significant amount of extra CPU cycles – that’s where our duration difference comes from. The Wrap-up The obvious point here is that adding new components to a dataflow isn’t necessarily going to make it go any slower, moreover you may be able to achieve significant improvements by splitting logic over multiple components rather than one. Performance tuning is all about reducing the amount of work that needs to be done and that doesn’t necessarily mean use less components, indeed sometimes you may be able to reduce workload in ways that aren’t immediately obvious as I think I have proven here. Of course there are many variables in play here and your mileage will most definitely vary. I encourage you to download the package and see if you get similar results – let me know in the comments. The package contains all three dataflows plus a fourth dataflow that will create the 2GB raw file for you (you will also need the [AdventureWorksDW2008] sample database from which to source the data); simply disable all dataflows except the one you want to test before executing the package and remember, execute using dtexec, not within BIDS. If you want to explore dataflow performance tuning in more detail then here are some links you might want to check out: Inequality joins, Asynchronous transformations and Lookups Destination Adapter Comparison Don’t turn the dataflow into a cursor SSIS Dataflow – Designing for performance (webinar) Any comments? Let me know! @Jamiet

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• Quickly Add Watermark To Multiple PDF Files Using “Batch PDF Watermark”

  - by Kavitha

  Want to add watermark to your PDF files with a single click? You can use the freeware Batch PDF Watermark. Batch PDF Watermark is super cool application that lets you add image or text watermarks to multiple files at a time. Office 2010 style ribbon user interface of the application is very easy to use and provides many options to configure watermark properties like – font styles, positioning, transparency levels, rotation of watermark image, scaling of watermark image and etc. Before running the watermark process, you can even preview it. To select multiple PDF files to watermark you can use “Add Files” option to hand pick required files or “Add Folder” option to choose all the PDF files available in the folder. Download Batch PDF Watermark [via liferocks] This article titled,Quickly Add Watermark To Multiple PDF Files Using “Batch PDF Watermark”, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• GeForce 9600GT support for dual monitor setup

  - by Theo

  I have a NVIDIA GeForce 9600 GT (point of view, link) on an Asus M2V-MX motherboard. The card has one DVI, HDMI and S-Video output. The graphics card does not seem to support dual monitors: the driver control panel for the graphics card does not detect a second monitor that is attached via S-Video (which leads me to believe that it doesn't support dual monitors with DVI and the other connections). Would it be possible to use a VGA/DVI splitter to attach two monitors to the single DVI output on the graphics card? Would this allow for a dual monitor setup, or only mirroring? How do I know if the graphic card supports this? With this particular motherboard, would it be possible to use the onboard video for another monitor?

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