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• A tip: Updating Data in SharePoint 2010 using REST API

  - by Sahil Malik

  SharePoint 2010 Training: more information Here is a little tip that will save you hours of head scratching. See there are two ways to update data in SharePoint using REST based API. A PUT request is used to update an entire entity. If no values are specified for fields in the entity, the fields will be set to default values. A MERGE request is used to update only those field values that have changed. Any fields that are not specified by the operation will remain set to their current value.   Now, sit back and think about it. You are going to update the entire entity! Hmm. Which means, you need to a) specify every column value, and b) ensure that the read only values match what was supplied to you. What a pain in the donkey! So 99/100 times, a PUT request will give you a HTTP 500 internal server error occurred, which is just so helpful. Read full article ....

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• Data Access Objects old fashioned? [on hold]

  - by Bono

  A couple of weeks ago I delivered some work for a university project. After a code review with some teachers I got some snarky remarks about the fact that I was (still) using Data Access Objects. The teacher in question who said this mentions the use of DAO's in his classes and always says something along the lines of "Back then we always used DAO's". He's a big fan of Object Relational Mapping, which I also think is a great tool. When I was talking about this with some of my fellow students, they also mentioned that they prefer the use of ORM, which I can understand. It did make me wonder though, is using DAO's really so old fashioned? I know that at my work DAO's are still being used, but this is due to the fact that some of the code is rather old and therefor can't be coupled with ORM. We also do use ORM at my work. Trying to find some more information on Google or Stack Exchange sites didn't really enlighten me. Should I step away from the use of DAO's and only start implementing ORM? I just feel that ORM's can be a bit overkill for some simple projects. I'd love to hear your opinions (or facts) about this.

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• Simplifying data search using .NET

  - by Peter

  An example on the asp.net site has an example of using Linq to create a search feature on a Music album site using MVC. The code looks like this - public ActionResult Index(string movieGenre, string searchString) { var GenreLst = new List<string>(); var GenreQry = from d in db.Movies orderby d.Genre select d.Genre; GenreLst.AddRange(GenreQry.Distinct()); ViewBag.movieGenre = new SelectList(GenreLst); var movies = from m in db.Movies select m; if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.Title.Contains(searchString)); } if (!string.IsNullOrEmpty(movieGenre)) { movies = movies.Where(x => x.Genre == movieGenre); } return View(movies); } I have seen similar examples in other tutorials and I have tried them in a real-world business app that I develop/maintain. In practice this pattern doesn't seem to scale well because as the search criteria expands I keep adding more and more conditions which looks and feels unpleasant/repetitive. How can I refactor this pattern? One idea I have is to create a column in every table that is "searchable" which could be a computed column that concatenates all the data from the different columns (SQL Server 2008). So instead of having movie genre and title it would be something like. if (!String.IsNullOrEmpty(searchString)) { movies = movies.Where(s => s.SearchColumn.Contains(searchString)); } What are the performance/design/architecture implications of doing this? I have also tried using procedures that use dynamic queries but then I have just moved the ugliness to the database. E.g. CREATE PROCEDURE [dbo].[search_music] @title as varchar(50), @genre as varchar(50) AS -- set the variables to null if they are empty IF @title = '' SET @title = null IF @genre = '' SET @genre = null SELECT m.* FROM view_Music as m WHERE (title = @title OR @title IS NULL) AND (genre LIKE '%' + @genre + '%' OR @genre IS NULL) ORDER BY Id desc OPTION (RECOMPILE) Any suggestions? Tips?

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• 3D Box Collision Data Import

  - by cboe

  I'm trying to implement a collision system using oriented bounding boxes, using a center for the box, it's extents as a 3D Vector and a rotation matrix, which is all stuff I picked up online and seem to be somewhat the standard. Detecting the center is no problem so I'm gonna leave these out here. My problem however is importing the data from a 3D file. Say I've placed a box with 2 units length on each side aligned to the world axis. The logic results here are extents of 1,1,1 and I use an identity matrix for rotation - easy. However I'm stuck when I rotate the box in the 3D program, say 30 degrees each axis. How would I parse the box? I only have these 8 vertices as information, and I guess what I would need to do is to find out the rotation of said box, apply it to the vertices so they are aligned to world axes and then calculate the extents out of that. How do I get the rotation of the box when I only have the vertex information of the box available?

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• Handling timeout in network application

  - by user2175831

  How can I handle timeouts in a network application. I'm implementing a provisioning system on a Linux server, the code is huge so I'm going to put the algorithm, it works as like this Read provisioning commands from file Send it to another server using TCP Save the request in hash. Receive the response then if successful response received then remove request from hash if failed response received then retry the message The problem I'm in now is when the program didn't receive the response for a timeout reason then the request will be waiting for a response forever and won't be retried. And please note that I'll be sending hundreds of commands and I have to monitor the timeout commands for all of them. I tried to use timer but that didn't help because I'll end up with so many waiting timers and I'm not sure if this is a good way of doing this. The question is how can I save the message in some data structure and check to remove or retry it later when there is no response from the other end? Please note that I'm willing to change the algorithm to anything you suggest that could deal with the timeouts.

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• encfs error while decoding the data

  - by migrator

  I have installed encfs and started using it to secure all my personal & office data and it was working absolutely fine until 2 hours back. The setup is like this. I have a folder in Copy folder called OfficeData which gets synchronized with my Copy folder When I login into the system I use the command encfs ~/Copy/OfficeData ~/Documents/OfficeData Once my work is over I dismount with the command fusermount -u ~/Documents/OfficeData All this data get synchronized with my desktop and with my mobile phone (as a backup) Today when I mounted, the folder got mounted by no directories and files present in that folder. I was worried and read man encfs which gave me to run the command encfs -v -f ~/Copy/OfficeData ~/Documents/OfficeData 2> encfs-OfficeData-report.txt. The below is the output of the file encfs-OfficeData-report.txt. The directory "/home/sri/Documents/OfficeData" does not exist. Should it be created? (y,n) 13:16:26 (main.cpp:523) Root directory: /home/sri/Copy/OfficeData/ 13:16:26 (main.cpp:524) Fuse arguments: (fg) (threaded) (keyCheck) encfs /home/sri/Documents/OfficeData -f -s -o use_ino -o default_permissions 13:16:26 (FileUtils.cpp:177) version = 20 13:16:26 (FileUtils.cpp:181) found new serialization format 13:16:26 (FileUtils.cpp:199) subVersion = 20100713 13:16:26 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:26 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:26 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:26 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:26 (FileUtils.cpp:1620) useStdin: 0 13:16:46 (Interface.cpp:165) checking if ssl/aes(3:0:2) implements ssl/aes(3:0:0) 13:16:46 (SSL_Cipher.cpp:370) allocated cipher ssl/aes, keySize 32, ivlength 16 13:16:49 (FileUtils.cpp:1628) cipher key size = 52 13:16:49 (Interface.cpp:165) checking if nameio/block(3:0:1) implements nameio/block(3:0:0) 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 4188221457101129840, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16725694203599486310, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3,: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 1354483141023495884, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3, 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3, 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/tVglci2rgp9o8qE-m9AvX6JNj1lQs-ER0OvnxfOb30Z,3,: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16720606331386655431, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:16:49 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:16:49 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:16:49 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:16:49 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:16:49 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:16:49 (FileNode.cpp:127) calling setIV on (null) 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16720606331386655431, fileIV = 0 13:16:49 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn 13:16:49 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/r1KIEqVkz-,7-6CobavHCSNn: No such file or directory 13:16:49 (encfs.cpp:138) getattr error: No such file or directory 13:19:31 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:31 (FileNode.cpp:127) calling setIV on (null) 13:19:31 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/ 13:19:31 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/ 13:19:31 (encfs.cpp:685) doing statfs of /home/sri/Copy/OfficeData 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 13735228085838055696, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/LuT8R,DlpRnNH9b,fjWiKHKc: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (encfs.cpp:685) doing statfs of /home/sri/Copy/OfficeData 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 4188221457101129840, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/UWbT-M-UKk1JpvNfN5uvOhGn: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (MACFileIO.cpp:75) fs block size = 1024, macBytes = 8, randBytes = 0 13:19:32 (FileNode.cpp:127) calling setIV on (null) 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:19:32 (CipherFileIO.cpp:105) in setIV, current IV = 0, new IV = 16725694203599486310, fileIV = 0 13:19:32 (DirNode.cpp:770) created FileNode for /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:19:32 (encfs.cpp:134) getattr /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF 13:19:32 (RawFileIO.cpp:191) getAttr error on /home/sri/Copy/OfficeData/o94olxB3orqarqyFviHKZ,ZF: No such file or directory 13:19:32 (encfs.cpp:138) getattr error: No such file or directory 13:19:32 (encfs.cpp:213) getdir on /home/sri/Copy/OfficeData/ 13:19:32 (BlockNameIO.cpp:185) padding, _bx, finalSize = 208, 16, -192 13:19:32 (DirNode.cpp:132) error decoding filename: eWJrLh2dRFAY-7Brbsc,mTqf 13:19:32 (DirNode.cpp:132) error decoding filename: .encfs6.xml 13:19:32 (BlockNameIO.cpp:185) padding, _bx, finalSize = 218, 16, -202 13:19:32 (DirNode.cpp:132) error decoding filename: pvph9DkZ0BMPg2vN4UcfwuNU 13:24:10 (openssl.cpp:48) Allocating 41 locks for OpenSSL Please help me Thanks in advance.

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• Error trapping for a missing data source in a Spring MVC / Spring JDBC web app [migrated]

  - by Geeb

  I have written a web app that uses Spring MVC libraries and Spring JDBC to connect to an Oracle DB. (I don't use any ORM type libraries as I create stored procedures on Oracle that do my stuff and I'm quite happy with that.) I use a connection pool to Oracle managed by the Tomcat container The app generally works absolutely fine by the way! BUT... I noticed the other day when I tried to set up the app on another Tomcat instance that I had forgotten to configure the connection pool and obviously the app could not get hold of an org.apache.commons.dbcp.BasicDataSource object, so it crashed. I define the pool params in the tomcat "context.conf" In my "web.xml" I have: <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/Spring/appServlet/servlet-context.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <!-- Map *everything* to appServlet --> <url-pattern>/</url-pattern> </servlet-mapping> <resource-ref> <description>Oracle Datasource example</description> <res-ref-name>jdbc/ora1</res-ref-name> <res-type>org.apache.commons.dbcp.BasicDataSource</res-type> <res-auth>Container</res-auth> </resource-ref> And I have a Spring "servlet-context.xml" where JNDI is used to map the data source object provided by the connection pool to a Spring bean with the ID of "dataSource": <jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/ora1" resource-ref="true" /> Here's the question: Where do I trap the case where the database cannot be accessed for whatever reason? I don't want the user to see a yard-and-a-half of Java stack trace in their browser, rather a nicer message that tells them there is a database problem etc. It seems that my app tries to configure the "dataSource" bean (in "servlet-context.xml") before any code has tested it can actually provide a dataSource object from the pool?! Maybe I'm not fully understanding exactly what is going on in these stages of the app firing up ... Thanks for any advice!

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• SQLAuthority News – New Book Released – SQL Server Interview Questions And Answers

  - by pinaldave

  Two days ago, on birthday of my blog – I asked simple question – Guess! What is in this box? I have received lots of interesting comments on the blog about what is in it. Many of you got it absolutely incorrect and many got it close to the right answer but no one got it 100% correct. Well, no issue at all, I am going to give away the price to whoever has the closest answer first in personal email. Here is the answer to the question about what is in the box? Here it is – the box has my new book. In fact, I should say our new book as I co-authored this book with my very good friend Vinod Kumar. We had real blast writing this book together and had lots of interesting conversation when we were writing this book. This book has one simple goal – “master the basics.” This book is not only for people who are preparing for interview. This book is for every one who wants to revisit the basics and wants to prepare themselves to the technology. One always needs to have practical knowledge to do their duty efficiently. This book talks about more than basics. There are multiple ways to present learning – either we can create simple book or make it interesting. We have decided the learning should be interactive and have opted for Interview Questions and Answer format. Here is quick interview which we have done together. Details of the books are here The core concept of this book will continue to evolve over time. I am sure many of you will come along with us on this journey and submit your suggestions to us to make this book a key reference for anybody who wants to start with SQL server. Today we want to acknowledge the fact that you will help us keep this book alive forever with the latest updates. We want to thank everyone who participates in this journey with us. You can get the books from [Amazon] | [Flipkart]. Read Vinod‘s blog post. Do not forget to wish him happy birthday as today is his birthday and also book release day – two reason to wish him congratulations. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Best Practices, Data Warehousing, Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL Interview Questions and Answers, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Book Review, SQLAuthority News, SQLServer, T SQL, Technology

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• SQL – Contest to Get The Date – Win USD 50 Amazon Gift Cards and Cool Gift

  - by Pinal Dave

  If you are a regular reader of this blog – you will find no issue at all in resolving this puzzle. This contest is based on my experience with NuoDB. If you are not familiar with NuoDB, here are few pointers for you. Step by Step Guide to Download and Install NuoDB – Getting Started with NuoDB Quick Start with Admin Sections of NuoDB – Manage NuoDB Database Quick Start with Explorer Sections of NuoDB – Query NuoDB Database In today’s contest you have to answer following questions: Q 1: Precision of NOW() What is the precision of the NuoDB’s NOW() function, which returns current date time? Hint: Run following script on NuoDB Console Explorer section: SELECT NOW() AS CurrentTime FROM dual; Here is the image. I have masked the area where the time precision is displayed. Q 2: Executing Date and Time Script When I execute following script - SELECT 'today' AS Today, 'tomorrow' AS Tomorrow, 'yesterday' AS Yesterday FROM dual; I will get the following result:   NOW – What will be the answer when we execute following script? and WHY? SELECT CAST('today' AS DATE) AS Today, CAST('tomorrow' AS DATE) AS Tomorrow, CAST('yesterday'AS DATE) AS Yesterday FROM dual; HINT: Install NuoDB (it takes 90 seconds). Prizes: 2 Amazon Gifts 2 Limited Edition Hoodies (US resident only)   Rules: Please leave an answer in the comments section below. You must answer both the questions together in a single comment. US resident who wants to qualify to win NuoDB apparel please mention your country in the comment. You can resubmit your answer multiple times, the latest entry will be considered valid. Last day to participate in the puzzle is June 24, 2013. All valid answer will be kept hidden till June 24, 2013. The winner will be announced on June 25, 2013. Two Winners will get USD 25 worth Amazon Gift Card. (Total Value = 25 x 2 = 50 USD) The winner will be selected using a random algorithm from all the valid answers. Anybody with a valid email address can take part in the contest. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: NuoDB

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• More Efficient Data Structure for Large Layered Tile Map

  - by Stupac

  It seems like the popular method is to break the map up into regions and load them as needed, my problem is that in my game there are many AI entities other than the player out performing actions in virtually all the regions of the map. Let's just say I have a 5000x5000 map, when I use a 2D array of byte's to render it my game uses around 17 MB of memory, as soon as I change that data structure to a my own defined MapCell class (which only contains a single field: byte terrain) my game's memory consumption rockets up to 400+ MB. I plan on adding layering, so an array of byte's won't cut it and I figure I'd need to add a List of some sort to the MapCell class to provide objects in the layers. I'm only rendering tiles that are on screen, but I need the rest of the map to be represented in memory since it is constantly used in Update. So my question is, how can I reduce the memory consumption of my map while still maintaining the above requirements? Thank you for your time! Here's a few snippets my C# code in XNA4: public static void LoadMapData() { // Test map generations int xSize = 5000; int ySize = 5000; MapCell[,] map = new MapCell[xSize,ySize]; //byte[,] map = new byte[xSize, ySize]; Terrain[] terrains = new Terrain[4]; terrains[0] = grass; terrains[1] = dirt; terrains[2] = rock; terrains[3] = water; Random random = new Random(); for(int x = 0; x < xSize; x++) { for(int y = 0; y < ySize; y++) { //map[x,y] = new MapCell(terrains[random.Next(4)]); map[x,y] = new MapCell((byte)random.Next(4)); //map[x, y] = (byte)random.Next(4); } } testMap = new TileMap(map, xSize, ySize); // End test map setup currentMap = testMap; } public class MapCell { //public TerrainType terrain; public byte terrain; public MapCell(byte itsTerrain) { terrain = itsTerrain; } // the type of terrain this cell is treated as /*public Terrain terrain { get; set; } public MapCell(Terrain itsTerrain) { terrain = itsTerrain; }*/ }

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• Coding with laptop and external screen - neck, back, comfort ...

  - by Xorty

  Guess I'm not the only one here coding on laptop + external keyboard + external screen. I can't really decide. Figure 1: Putting screen directly in front of (upright) my eyes and move laptop to the side. That feels like more comfortable but I can't really see so good to 15" laptop which is now quite away. Feels unused. Figure 2: Putting laptop in front of me and move external monitor on side. Feels like more efficient space usage, but I am afraid that my neck/back might start hurting since I need to turn my head often. What do you prefer? Some good advice? Sacrificing health is definitely no option here so that's why I'm worried and asking this silly question. Thanks

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• Increase Availability for Data Center Virtual Environments

  - by Antoinette O'Sullivan

  With Oracle VM, you can increase availability and add flexibility for data center virtual environments. To get started, take training on Oracle VM Server for x86 and Oracle VM Server for SPARC as appropriate for your systems. You can take these live instructor-led courses from your own desk as a live-virtual event or travel to an education center for an in-class event. The Oracle VM Administration: Oracle VM Server for x86 course, in 3 days, teaches you about creating NFS and iSCI repositories, migration, cloning and exercising high availabillity. In-class events already on the schedule include:  Location  Date  Delivery Language  Zagreb, Croatia  11 November 2013  Croatian  Prague, Czech Republic  21 October 2013  Czech  Ballerup, Denmark  26 August 2013  English  Bordeaux, France  18 September 2013  French  Paris, France  9 October 2013  French  Strasbourg, France  11 September 2013  French  Hamburg, Germany  30 Septemeber 2013  German  Munich, Germany  28 October 2013  German  Budapest, Hungary  9 September 2013  Hungarian  Riga, Latvia  30 September 2013  Latvian  Oslo, Norway  16 September 2013  English  Warsaw, Poland  28 October 2013  Polish  Bucharest, Romania  14 October 2013  English  Istanbul, Turkey  23 December 2013  Turkish  Indonesia, Jakarta  19 August 2013  English  Canberra, Australia  4 November 2013  English  Melbourne, Australia  6 November 2013  English  Sydney, Australia  25 November 2013  English  San Francisco, CA, United States  16 September 2013  English  Roseville, MN, United States  21 October 2013  English  St Louis, MO, United States  11 November 2013  English  Reston, VA, United States  31 July 2013  English  Buenos Aires, Argentina  21 August 2013  Spanish The Oracle VM Server for SPARC: Installation and Configuration course, in 2 days, teaches you about configuring control and service domains, creating guest domains, using virtual disks and networks, and migration. In-class events already on the schedule include:  Location  Date  Delivery Language  Budapest, Hungary  12 September 2013  Hungarian  Prague, Czech Republic  9 September 2013  Czech  Colombes, France  7 October 2013  French  Stuttgart, Germany  28 October 2013  German  Madrid, Spain  5 September 2013  Spanish  Istanbul, Turkey 30 September 2013  Turkish   Petaling Jaya, Malaysia 15 August 2013  English   Singapore 5 August 2013  English   Cnaberra, Australia  12 August 2013 English  Melbourne, Australia  30 October 2013 English  Sydney, Australia  26 August 2013 English To register for a course or to learn more about Oracle's virtualization curriculum, go to http://education.oracle.com/virtualization.

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• [EF + Oracle] Inserting Data (Sequences) (2/2)

  - by JTorrecilla

  Prologue In the previous chapter we have see how to create DB records with EF, now we are going to Some Questions about Oracle.   ORACLE One characteristic from SQL Server that differs from Oracle is “Identity”. To all that has not worked with SQL Server, this property, that applies to Integer Columns, lets indicate that there is auto increment columns, by that way it will be filled automatically, without writing it on the insert statement. In EF with SQL Server, the properties whose match with Identity columns, will be filled after invoking SaveChanges method. In Oracle DB, there is no Identity Property, but there is something similar. Sequences Sequences are DB objects, that allow to create auto increment, but there are not related directly to a Table. The syntax is as follows: name, min value, max value and begin value. 1: CREATE SEQUENCE nombre_secuencia 2: INCREMENT BY numero_incremento 3: START WITH numero_por_el_que_empezara 4: MAXVALUE valor_maximo | NOMAXVALUE 5: MINVALUE valor_minimo | NOMINVALUE 6: CYCLE | NOCYCLE 7: ORDER | NOORDER 8:    How to get sequence value? To obtain the next val from the sequence: 1: SELECT nb_secuencia.Nextval 2: From Dual Due to there is no direct way to indicate that a column is related to a sequence, there is several ways to imitate the behavior: Use a Trigger (DB), Use Stored Procedures or Functions(…) or my particularly option. EF model, only, imports Table Objects, Stored Procedures or Functions, but not sequences. By that, I decide to create my own extension Method to invoke Next Val from a sequence: 1: public static class EFSequence 2: { 3: public static int GetNextValue(this ObjectContext contexto, string SequenceName) 4: { 5: string Connection = ConfigurationManager.ConnectionStrings["JTorrecillaEntities2"].ConnectionString; 6: Connection=Connection.Substring(Connection.IndexOf(@"connection string=")+19); 7: Connection = Connection.Remove(Connection.Length - 1, 1); 8: using (IDbConnection con = new Oracle.DataAccess.Client.OracleConnection(Connection)) 9: { 10: using (IDbCommand cmd = con.CreateCommand()) 11: { 12: con.Open(); 13: cmd.CommandText = String.Format("Select {0}.nextval from DUAL", SequenceName); 14: return Convert.ToInt32(cmd.ExecuteScalar()); 15: } 16: } 17:  18: } 19: } This Object Context’s extension method are going to invoke a query with the Sequence indicated by parameter. It takes the connection strings from the App settings, removing the meta data, that was created by VS when generated the EF model. And then, returns the next value from the Sequence. The next value of a Sequence is unique, by that, when some concurrent users are going to create records in the DB using the sequence will not get duplicates. This is my own implementation, I know that it could be several ways to do and better ways. If I find any other way, I promise to post it. To use the example is needed to add a reference to the Oracle (ODP.NET) dll.

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• Zabbix Proxy not collecting data

  - by Jordan Eunson

  I have a working Zabbix 1.8.2 server collecting data for our office and our colo facility. However the link between the colo and office is flaky. What I'm trying to do is setup a proxy on the colo side to have a 1 hour cache and relay the data to our primary server at the office. Our zabbix server is compiled from source and uses a mysql database I've followed the instructions found in the zabbix documentation to compile the proxy using a sqlite3 database. I add the proxy to zabbix under Administration-DM-Proxies. The zabbix server "sees" the proxy because the "last seen" field is always under 60s. However when I assign a colo host to the proxy I stop receiving data from it. The colo host's zabbix_agentd.log file says this: 29343:20100622:124847 Timeout while answering request 29343:20100622:124847 Getting list of active checks failed. Will retry after 60 seconds The zabbix_proxy.log says this. 2041:20100622:123131.760 Deleted 0 records from history [0.000994 seconds] 2028:20100622:124131.671 Error while receiving answer from server [ZBX_TCP_READ() failed I also am unable to receive any SNMP data which is more important to me than the zabbix agent data. Has anyone had this problem before? Zabbix Server OS: CentOS5.4 Zabbix Server Build: 1.8.2 from source Zabbix Proxy OS: CentOS5.4 Zabbix Proxy Build: 1.8.2 from source P.S. The SQLite database on the zabbix proxy never gets any data written to it, it is identical to when I created it from the blank schema in zabbix-1.8.2/create/schema. (Yes I've checked the permissions)

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• Cacti not working for SNMP data sources

  - by lorenzo-s

  I installed packages cacti and snmpd on a Debian server. I'm able to display common graphs in Cacti (such as memory usage, load average, logged in users, etc) using the data templates listed as Unix. Now I want to replace these graphs with new ones using SNMP data sources, because I see there is also CPU usage and because it's not excluded I have to manage multiple hosts in the future. So, I installed snmpd on the machine and left the snmpd.conf as it is. In Cacti, I created three new data sources from SNMP templates for 127.0.0.1 host: ucd/net - CPU Usage - Nice ucd/net - CPU Usage - System ucd/net - CPU Usage - User Then I created a new graph from template ucd/net - CPU Usage, and select the three data sources in the Graph Item Fields section. Graph is now enabled and running, but empty. No data have been collected. Under Console - Devices my SNMP host is listed as up and running: System:Linux ip-xx-xx-xxx-xxx 3.2.0-23-virtual #36-Ubuntu SMP Tue Apr 10 22:29:03 UTC 2012 x86_64 Uptime: 929267 (0 days, 2 hours, 34 minutes) Hostname: ip-xx-xx-xxx-xxx Location: Sitting on the Dock of the Bay Contact: Me [email protected] In SNMP Options I left all as it is: SNMP Version: Version 1 SNMP Community: public SNMP Timeout: 500 ms Maximum OID's Per Get Request: 10 In Console - Utilities - Cacti Log I have multiple warning (two for each data source) every 5 minutes: 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] Host[2] DS[18] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.4.15.0' 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] Host[1] DS[9] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:45:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.11.52.0' 10/29/2012 01:40:01 PM - CMDPHP: Poller[0] Host[2] DS[19] WARNING: Result from SNMP not valid. Partial Result: U 10/29/2012 01:40:01 PM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'127.0.0.1', and OID:'.1.3.6.1.4.1.2021.4.6.0' [...] I have the feeling I'm missing something, but I cannot get it...

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• Force database read to master if slave data is stale

  - by Jeff Storey

  I previously asked a specific question about this database replication for new user signup to which I got an answer, but I want to ask this in the more general sense. I have a database setup in which I am using a master/slave combination. I am using the slaves for load balancing (the data itself is partitioned/sharded across multiple databases, but each database has X slaves for load balancing). Let's say I write some data to the master. Now I do a subsequent read which hits a slave, but the slave has not yet caught up to the master. Is there a way (which can be done quickly since it will happen frequently) to determine if the data is stale in the slave so I can then route to the master? In my previous question, it was suggested to do simultaneous writes to the cache and the database. This solution seems practical, but there is still a chance that the data may have been removed from the cache but not yet updated in the slave. A possible solution is to ensure the cache is big enough (based on the typical application load) so the data will not be evicted within the time frame it takes to replicate the data. This seems like it may be feasible. Can anyone provide additional insight into this question? Thanks!

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• How to deduplicate 40TB of data?

  - by Michael Stauffer

  I've inherited a research cluster with ~40TB of data across three filesystems. The data stretches back almost 15 years, and there are most likely a good amount of duplicates as researchers copy each others data for different reasons and then just hang on to the copies. I know about de-duping tools like fdupes and rmlint. I'm trying to find one that will work on such a large dataset. I don't care if it takes weeks (or maybe even months) to crawl all the data - I'll probably throttle it anyway to go easy on the filesystems. But I need to find a tool that's either somehow super efficient with RAM, or can store all the intermediary data it needs in files rather than RAM. I'm assuming that my RAM (64GB) will be exhausted if I crawl through all this data as one set. I'm experimenting with fdupes now on a 900GB tree. It's 25% of the way through and RAM usage has been slowly creeping up the whole time, now it's at 700MB. Or, is there a way to direct a process to use disk-mapped RAM so there's much more available and it doesn't use system RAM? I'm running CentOS 6.

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• Zabbix Proxy not collecting data

  - by syntaxcollector

  Hi All I have a working Zabbix 1.8.2 server collecting data for our office and our colo facility. However the link between the colo and office is flaky. What I'm trying to do is setup a proxy on the colo side to have a 1 hour cache and relay the data to our primary server at the office. Our zabbix server is compiled from source and uses a mysql database I've followed the instructions found in the zabbix documentation to compile the proxy using a sqlite3 database. I add the proxy to zabbix under Administration-DM-Proxies. The zabbix server "sees" the proxy because the "last seen" field is always under 60s. However when I assign a colo host to the proxy I stop receiving data from it. The colo host's zabbix_agentd.log file says this: 29343:20100622:124847 Timeout while answering request 29343:20100622:124847 Getting list of active checks failed. Will retry after 60 seconds The zabbix_proxy.log says this. 2041:20100622:123131.760 Deleted 0 records from history [0.000994 seconds] 2028:20100622:124131.671 Error while receiving answer from server [ZBX_TCP_READ() failed I also am unable to receive any SNMP data which is more important to me than the zabbix agent data. Has anyone had this problem before? Zabbix Server OS: CentOS5.4 Zabbix Server Build: 1.8.2 from source Zabbix Proxy OS: CentOS5.4 Zabbix Proxy Build: 1.8.2 from source P.S. The SQLite database on the zabbix proxy never gets any data written to it, it is identical to when I created it from the blank schema in zabbix-1.8.2/create/schema. (Yes I've checked the permissions)

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• Did chkdsk make it harder to restore files?

  - by neyl

  My friend asked me to try and fix his loaded Sansa Clip + which wasn't playing. After opening it in MSC mode I discovered that the Music directory was empty and total of all files was only a few MB. However Disk properties showed me that it was 7Gb full. I then ran Tools - Error Checking and Windows dutifully informed me that disk was corrupt and I should run again Allowing Windows to Fix Errors. I did that and it told me everything was fixed and that all files were placed in FOUND.000 Dir. FOUND.000 was about 7.5 GB with FILE0000-1546 . CHK. (I am aware of methods like ChkBack to scan and convert to mp3 etc BUT Original filenames and structure needed!) Now I started getting worried that I made things worse! I have plenty of experience with Data Recovery Programs - Recuva, Restore My Files etc. and I was anyhow planning to use them to scan the drive. But NOW after CHKDSK "fixed" the drive maybe it modified critical FAT information vital for data recovery. So I run these programs and 0!!!. No trace of files! I tried a ton of Recovery Programs with same results TILL EaseUS Data Recovery Wizard found all files and I purchased program for $55! My Question In your opinion - did running CHKDSK with automatic fixing of errors make matters worse (i.e. many data recovery progs. didn't find a trace and they would have done if not for chkdsk) or was the filesystem too corrupt anyhow for regular File Recovery Progs.? If I would be a Professional - would I be responsible for running CHKDSK - automatic Fixing. Do you know of a better Data Recovery Program than EaseUs Data Recovery wizard - According to my experience I haven't found better!? Thanks

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• Do I need a helper column, or can I do this with a formula?

  - by dwwilson66

  I am using this formula =IF((LEFT($B26,2)="<p"),0,IF($B26="",0,IF($F26<>"",0,(FIND("""../",$B26))))) To parse data similar to the following. <nobr>&nbsp;&nbsp;&nbsp;&nbsp;contractor information</nobr><br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="../City_Electrical_Inspectors.htm"><b> City Electrical Inspectors</b></a><br> <nobr>&nbsp;&nbsp;&nbsp;&nbsp;<a href="../City_Electrical_Inspectors.htm"><b>inspection</b></a></nobr><br> My problem comes in cases such as the first line, in which the line is not a new paragraph nor a link, and my FIND returns an error of #VALUE! Id like to create an IF test to scan the line for the existence of the pattern in my FIND statement before processing that statement. I figured that looking for an error condition may be the way to go. However, the only way I can envision this is as a self-referential formula, similart to the following pseudocode. IF(ISERROR($L26)=TRUE,$L26=0,L$26=the-result-of-the-formula-above) Can this be done with a formula or do I need to use a new helper column? Thanks.

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• Using GPO to collect data about VMware view activity

  - by MoSiAc

  Our security group wants us to begin logging data for external access to our view enviroment. At first we thought that view security would be logging all source ip's that are external in nature so if for some reason there is an intrusion we would have record of it there. Of course our firewall logs all that information but correlating it to view is sketchy at best with our current implementation. We know on viewdesktops there is a set of keys in VolitateEnviroment that contains stuff such as source ip and username, etc. We have a script in place that, when run as a logon script attached to a user account in AD collects the information as we need it. If we have a GPO run the same script the information does not get collected. We feel like there is a piece of the puzzle we're missing but we don't know what. If anyone knows what we're forgetting or misconfiguring that would be great, or if you have a better way of us collecting external source ip's for view specifically we'd be interested in that as well. Thanks, EDIT CODE Batch script to dump to text file @echo off timeout 20 echo %computername%/%username% %time% %date% c:\vdi\vmware.txt echo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~c:\vdi\vmware.txt reg query "HKEY_CURRENT_USER\Volatile Environment" /v "ViewClient_LoggedOn_Username"c:\vdi\vmware.txt reg query "HKEY_CURRENT_USER\Volatile Environment" /v "ViewClient_IP_Address"c:\vdi\vmware.txt echo.c:\vdi\vmware.txt VB Script to display values Const HKEY_CURRENT_USER = &H80000001 Set wmiLocator=CreateObject("WbemScripting.SWbemLocator") Set wmiNameSpace = wmiLocator.ConnectServer(".", "root\default") Set objRegistry = wmiNameSpace.Get("StdRegProv") sPath = "Volatile Environment" lRC = objRegistry.GetStringValue(HKEY_CURRENT_USER, sPath, "ViewClien_Machine_Name", vMachine) lRC = objRegistry.GetStringValue(HKEY_CURRENT_USER, sPath, "ViewClien_IP_Address", vIP) lRC = objRegistry.GetStringValue(HKEY_CURRENT_USER, sPath, "ViewClien_MAC_Address", vMAC) msgbox "The Remote Device Name is " & vMachine & " @ " & vIP & " (" & vMAC & ") " he wanted me to mention that the batch file actually runs and I can see it counting down when I reconnect but it does not grab the registry values.

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• Help with Design for Vacation Tracking System (C#/.NET/Access/WebServices/SOA/Excel) [closed]

  - by Aaronaught

  I have been tasked with developing a system for tracking our company's paid time-off (vacation, sick days, etc.) At the moment we are using an Excel spreadsheet on a shared network drive, and it works pretty well, but we are concerned that we won't be able to "trust" employees forever and sometimes we run into locking issues when two people try to open the spreadsheet at once. So we are trying to build something a little more robust. I would like some input on this design in terms of maintainability, scalability, extensibility, etc. It's a pretty simple workflow we need to represent right now: I started with a basic MS Access schema like this: Employees (EmpID int, EmpName varchar(50), AllowedDays int) Vacations (VacationID int, EmpID int, BeginDate datetime, EndDate datetime) But we don't want to spend a lot of time building a schema and database like this and have to change it later, so I think I am going to go with something that will be easier to expand through configuration. Right now the vacation table has this schema: Vacations (VacationID int, PropName varchar(50), PropValue varchar(50)) And the table will be populated with data like this: VacationID | PropName | PropValue -----------+--------------+------------------ 1 | EmpID | 4 1 | EmpName | James Jones 1 | Reason | Vacation 1 | BeginDate | 2/24/2010 1 | EndDate | 2/30/2010 1 | Destination | Spectate Swamp 2 | ... | ... I think this is a pretty good, extensible design, we can easily add new properties to the vacation like the destination or maybe approval status, etc. I wasn't too sure how to go about managing the database of valid properties, I thought of putting them in a separate PropNames table but it gets complicated to manage all the different data types and people say that you shouldn't put CLR type names into a SQL database, so I decided to use XML instead, here is the schema: <VacationProperties> <PropertyNames>EmpID,EmpName,Reason,BeginDate,EndDate,Destination</PropertyNames> <PropertyTypes>System.Int32,System.String,System.String,System.DateTime,System.DateTime,System.String</PropertyTypes> <PropertiesRequired>true,true,false,true,true,false</PropertiesRequired> </VacationProperties> I might need more fields than that, I'm not completely sure. I'm parsing the XML like this (would like some feedback on the parsing code): string xml = File.ReadAllText("properties.xml"); Match m = Regex.Match(xml, "<(PropertyNames)>(.*?)</PropertyNames>"; string[] pn = m.Value.Split(','); // do the same for PropertyTypes, PropertiesRequired Then I use the following code to persist configuration changes to the database: string sql = "DROP TABLE VacationProperties"; sql = sql + " CREATE TABLE VacationProperties "; sql = sql + "(PropertyName varchar(100), PropertyType varchar(100) "; sql = sql + "IsRequired varchar(100))"; for (int i = 0; i < pn.Length; i++) { sql = sql + " INSERT VacationProperties VALUES (" + pn[i] + "," + pt[i] + "," + pv[i] + ")"; } // GlobalConnection is a singleton new SqlCommand(sql, GlobalConnection.Instance).ExecuteReader(); So far so good, but after a few days of this I then realized that a lot of this was just a more specific kind of a generic workflow which could be further abstracted, and instead of writing all of this boilerplate plumbing code I could just come up with a workflow and plug it into a workflow engine like Windows Workflow Foundation and have the users configure it: In order to support routing these configurations throw the workflow system, it seemed natural to implement generic XML Web Services for this instead of just using an XML file as above. I've used this code to implement the Web Services: public class VacationConfigurationService : WebService { [WebMethod] public void UpdateConfiguration(string xml) { // Above code goes here } } Which was pretty easy, although I'm still working on a way to validate that XML against some kind of schema as there's no error-checking yet. I also created a few different services for other operations like VacationSubmissionService, VacationReportService, VacationDataService, VacationAuthenticationService, etc. The whole Service Oriented Architecture looks like this: And because the workflow itself might change, I have been working on a way to integrate the WF workflow system with MS Visio, which everybody at the office already knows how to use so they could make changes pretty easily. We have a diagram that looks like the following (it's kind of hard to read but the main items are Activities, Authenticators, Validators, Transformers, Processors, and Data Connections, they're all analogous to the services in the SOA diagram above). The requirements for this system are: (Note - I don't control these, they were given to me by management) Main workflow must interface with Excel spreadsheet, probably through VBA macros (to ease the transition to the new system) Alerts should integrate with MS Outlook, Lotus Notes, and SMS (text messages). We also want to interface it with the company Voice Mail system but that is not a "hard" requirement. Performance requirements: Must handle 250,000 Transactions Per Second Should be able to handle up to 20,000 employees (right now we have 3) 99.99% uptime ("four nines") expected Must be secure against outside hacking, but users cannot be required to enter a username/password. Platforms: Must support Windows XP/Vista/7, Linux, iPhone, Blackberry, DOS 2.0, VAX, IRIX, PDP-11, Apple IIc. Time to complete: 6 to 8 weeks. My questions are: Is this a good design for the system so far? Am I using all of the recommended best practices for these technologies? How do I integrate the Visio diagram above with the Windows Workflow Foundation to call the ConfigurationService and persist workflow changes? Am I missing any important components? Will this be extensible enough to support any scenario via end-user configuration? Will the system scale to the above performance requirements? Will we need any expensive hardware to run it? Are there any "gotchas" I should know about with respect to cross-platform compatibility? For example would it be difficult to convert this to an iPhone app? How long would you expect this to take? (We've dedicated 1 week for testing so I'm thinking maybe 5 weeks?) Many thanks for your advices, Aaron

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• What are common anti-patterns when using VBA

  - by Ahmad

  I have being coding a lot in VBA lately (maintenance and new code), specifically with regards to Excel automation etc. = macros. Typically most of this has revolved around copy/paste, send some emails, import some files etc. but eventually just ends up as a Big ball of mud As a person who values clean code, I find it very difficult to produce 'decent' code when using VBA. I think that in most cases, this is a direct result of the macro-recorder. Very helpful to get you started, but most times, there are one too many lines of code that achieve the end result. Edit: The code from the macro-recorder is used as a base to get started, but is not used in its entirety in the end result I have already created a common addin that has my commonly used subroutines and some utility classes in an early attempt to enforce some DRYness - so this I think is a step in the right direction. But I feel as if it's a constant square peg, round hole situation. The wiki has an extensive list of common anti-patterns and what scared me the most was how many I have implemented in one way or another. The question Now considering, that my mindset is OO design, what some common anti-patterns and the possible solutions when designing a solution (think of this - how would designing a solution using Excel and VBA be different from say a .net/java/php/.../ etc solution) ; and when doing common tasks like copying data, emailing, data importing, file operations... etc An anti-pattern as defined by Wikipedia is: In software engineering, an anti-pattern (or antipattern) is a pattern that may be commonly used but is ineffective and/or counterproductive in practice

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• How to tell if Microsoft Works is 32 or 64 bit? Please Help!

  - by Bill Campbell

  Hi, I am trying to convert one of our apps to run on Win7 64 bit from XP 32 bit. One of the things that it uses is Excel to import files. It's a little complicated since it was using Microsoft.Jet.OLEDB.4.0 (Excel). I found Office 14 (2010) has a 64bit version I can download. I downloaded Office 2010 Beta but it didn't seem to install Microsoft.ACE.OLEDB.14.0. I found that I could download 2010 Office System Driver Beta: Data Connectivity Components which has the ACE.OLEDB.14 in it but when I try to install it, the installed tells me "You cannot install the 64-bit version of Access Database engine for Microsoft Office 2010 because you currently have 32-bit Office products installed". How do I determine what 32bit office products this is reffering to? My Dell came with Microsoft Works installed. I don't know if this is 32 or 64 bit. Is there anyway to tell? I don't want to uninstall this if it's not the problem and I'm not sure what else might be the problem. Any help would be appreciated! thanks, Bill

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• Event based scheduling in excel

  - by andreas

  Hey fellas! Where i am working we have a number of contractor programmers. We handle the requirements and the project management of our products. I have been trying using various project timing and estimations techniques but cant get the hang of it yet. I have read Joel's evidence based scheduling and i was wondering if there's anything out there that can help me apply that theory? not looking for complex software but perhaps something in excel? Any help will be appreciated Andreas

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