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• SQL server Rebuild Index

  - by Uday

  How can we know that before rebuilding index --How much space is required for the Transaction Log file( I knew we may required to consider sort_tempdb option , if we set to ON then we may required to ensure about tempdb space as well , Also if we set off then sorting, temporary indexes(during Build phase of rebuild index) creation will takes place in same Database.)?. Usually I have checked with Many users they say :Log file size =1.5 * Index size. How much space required for the Filegroup for datafiles-for ex-Consider I have one filegroup with 1 Mdf + ndf files. I have MSDN Link :those are pretty good information about per-requisites before rebuild index Link :http://msdn.microsoft.com/en-us/library/ms191183.aspx How can I tell exactly or Approx... to get Log/Primary FG size(or any other filegroup).

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• How to recover from failed Mysql schema update, with replication?

  - by OmerGertel

  I have two MySQL servers configured with master-slave replication. Before we deploy a new application version we: 1) STOP SLAVE 2) Take a MySQL dump of the slave. However, if a mistake is done during the deployment of the new schema version (a table is dropped by mistake, for example), having the slave intact doesn't help. Our service is write-intensive, so we can't turn it back up until we have a master working. If we now load the mysql dump back into the master, it will take a long time during which our service remains down. What is the best-practice to recover from such a mistake? How can I setup the system so I can easily promote the slave, turn on our service and only then tend to the broken database? Mainly, I'm worried with re-syncing the slave and the master after changes are done on the slave.

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• What is easiest no fail way to publish asp.net app?

  - by Maestro1024

  What is easiest no fail way to publish asp.net app? Sorry a bit of an open ended question but I am having issues deploying an asp.net report project and any solution to get the site up is fine. I am running Win7/SQL 2008 and want to publish a asp.net report site that I created in VS 2008. Website launches when I run in debug in Visual studio but I want to publish the site so that it can be seen on the LAN. I published the files off to a folder and started up the IIS manager and added a new site and pointed to that folder. Set the permission on the folder to share to everyone. However when I go to the DNS name I put in for the website it does not launch. Any ideas on this? I see websites out there talking about a web sharing tab on the folder properties but I do not see that when I go to folders. Why might that be? Another avenue I have not pursued yet is publishing directly to a website. Has anyone tried that? Is that better or worse than publishing to filesystem?

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• Connect to MySql on other machine on LAN

  - by Ankur Sachdeva

  I am facing problem with connecting MySql database on the other machine on the same network. Could not connect to the specified instance. MySql error number 1130 Host 'abc' is not allowed to connect to this MySql server (Pinging ok time 1-3 ms ttl =128) I have check out the followings: Tcp/IP enabled RegEdit under hlocal machine .... parameters .. maxUserpORT And timedelay.. Grant all . to 'root'@'Myipaddress' please help to the earliest..

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• MSDTC on server x is unavailable

  - by Fishcake

  I have Windows Server 2003 running in a virtual machine, running some software that is trying to update a database within transactions on my Windows 7 machine (the host for the VM). On my host I have edited the settings for Local DTC by selecting the following Client and Administration Allow Remote clients Allow Remote administration Transaction manager communication Allow inbound Allow outbound No authentication required However when I try to run the software I receive this error: MSDTC on server 'x' is unavailable. Whilst searching for fixes most just suggest making sure the service is running which I have. Cheers!

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• What hardware makes a good MongoDB Server ? Where to get it ?

  - by João Pinto Jerónimo

  Suppose you're on dell.com right now and you're buying a server to run your MongoDB database for your small startup. You will have to handle literally tens of thousands of writes and reads per minute (but small objects). Would you go for 2 processors ? Invest more on RAM ? I've heard (correct me if I'm wrong) MongoDB handles the most it can on the RAM and then flushes everything to the disk, in that case I should invest on a CPU with a large L2 cache, probably 40GB of RAM and a solid state drive.. right ? Would I be better off with a high end (~$11,309, 2 expensive processors, 96GB of RAM) server or 2x(~$6,419, 2 expensive processors, 12GB of RAM) servers ? Is Dell ok or do you have better sugestions ? (I'm outside the US, on Portugal)

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• HP Proliant DL380 G4 - Can this server still perform in 2011?

  - by BSchriver

  Can the HP Proliant DL380 G4 series server still perform at high a quality in the 2011 IT world? This may sound like a weird question but we are a very small company whose primary business is NOT IT related. So my IT dollars have to stretch a long way. I am in need of a good web and database server. The load and demand for a while will be fairly low so I am not looking nor do I have the money to buy a brand new HP Dl380 G7 series box for $6K. While searching around today I found a company in ATL that buys servers off business leases and then stripes them down to parts. They clean, check and test each part and then custom "rebuild" the server based on whatever specs you request. The interesting thing is they also provide a 3-year warranty on all their servers they sell. I am contemplating buying two of the following: HP Proliant DL380 G4 Dual (2) Intel Xeon 3.6 GHz 800Mhz 1MB Cache processors 8GB PC3200R ECC Memory 6 x 73GB U320 15K rpm SCSI drives Smart Array 6i Card Dual Power Supplies Plus the usual cdrom, dual nic, etc... All this for $750 each or $1500 for two pretty nicely equipped servers. The price then jumps up on the next model up which is the G5 series. It goes from $750 to like $2000 for a comparable server. I just do not have $4000 to buy two servers right now. So back to my original question, if I load Windows 2008 R2 Server and IIS 7 on one of the machines and Windows 2008 R2 server and MS SQL 2008 R2 Server on another machine, what kind of performance might I expect to see from these machines? The facts is this series is now 3 versions behind the G7's and this series of server was built when Windows 200 Server was the dominant OS and Windows 2003 Server was just coming out. If you are running Windows 2008 R2 Server on a G4 with similar or less specs I would love to hear what your performance is like.

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• Quickly set up a Windows Server and automatically install and configure software

  - by Chris

  Yesterday I spent far too much time downloading and installing software on Windows Server 2008. I only had to install a simple server for SQL Server 2008 Express using Microsoft's Web Platform Installer, then configure it to enable remote connections. Everything had to be attended, wasting my time. On a Linux system, this would be trivial to automate, but this is Windows. I do this very rarely, but in the future I would like to make this take as little time as possible. I could do a disc image with everything I installed and configured, but is there a better way? I know nothing of advanced deployment techniques on Windows. Ideally I would like to be able to remotely re-install the OS, or have an unattended install (which I know is possible). Any tips to make the software I need easier to and install and configure with minimal interaction necessary would be helpful. I don't expect everything I asked for to be possible and easy to do. Basically, If any part of it can be done quicker or at least without user input, that's what I'm looking for.

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• netlogon errors

  - by rorr

  I have two instances of mssql 2005 and am using CA XOSoft replication. The master is a failover cluster and the replica is a standalone server. They are all running Server 2003 sp2 x64. Same patch levels on all servers. This setup has worked great for several months until we recently restricted the RPC ports on both nodes of the master(5000 - 6000 using rpccfg.exe). We have to implement egress filtering, thus the limiting of the ports. We began receiving login errors for sql windows authentication and NETLOGON Event ID: 5719: This computer was not able to set up a secure session with a domain controller in domain due to the following: Not enough storage is available to process this command. This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator. We also see group policies failing to update and cluster file shares go offline at the same time. The RPC ports were set back to default when we started seeing these problems and the servers rebooted, but the problems persist. The domain controllers are not showing any errors. Running dcdiag and netdiag shows everything is fine. We have noticed that the XOSoft service ws_rep.exe is using a lot of handles(8 - 9k), about the same number that sqlserver is using. As soon as xosoft replication is stopped the login errors cease and everything functions correctly. I have opened a ticket with CA for XOSoft, but I'm not sure that the problem is actually xosoft, but that it is the one bringing the problem to light. I'm looking for tips on debugging RPC problems. Specifically on limiting the ports and then reverting the changes.

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• Importing CSV files into Excel using a macro

  - by B-Ballerl

  I'm want to develop a macro where in my excel worksheet I type a date in a specific cell, and the macro will go into a folder containing text files. A database you could say. I want it to find the corresponding file name which is written as a date, put the data through a delimeter, and paste into the cells directly below where I orginally put the date. I'm very new with Macro's so if you must answer try to be a little more simple than you might usually be. Thanks In Advance if anyone can Help!! Update The folder will always be in the same place and the text files will all be formatted DD_MM_YYYY. And there cells below will always be empty Some Pictures to Make what I'm asking, easier to figure out. View the Image in a new tab for better res.

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• Separate tables or single table with queries?

  - by Joe

  I'm making an employee information database. I need to handle separated employees. Should I a. set up a query with a macro to send separated employees to a separate table, or b. just add a flag to the single table denoting separation? I understand that it's best practice to take choice b, and the one reason I can think of for this is that any structural changes I make to the table later will have to be done in both places. But it also seems like setting up a flag forces me to filter out that flag for basically every useful query I'm going to make in the future.

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• Organizing files relationally in Windows 7?

  - by Cayetano Gonçalves

  I just took a new job as a policy analyst, and after even one week keeping track of hundreds of files- lawsuits, legislation, letters, etc- in Windows 7 is proving difficult. In my last job I was a database architect and I helped build Linux based servers to track files among an entire department, however there is no way for me to do that at this time in this job. Is there any way to track files/indices/locations/tags/themes and store them in some kind of RDBMS system, instead of storing the files in folders that only allow for flat and fixed storage? For example, if I have a file that deals with: ELID organization Appeals court John Smith It really is inconvenient to have to decide which one of these tags to create into a folder and place the file into it, when it falls under all the categories. Even if I could place tags the way you can in Stack Exchange on files, it would solve a lot of heart ache.

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• Windows Server 2008 R2 running at a snail's pace

  - by Django Reinhardt

  Really weird problem here. Our main web server has started running at a snail's pace, for absolutely no reason we can discern. Even after restarting the machine, when there's no little or no ram usage and CPU usage is fluctuating between 0 and 30%, simple tasks, like opening Internet Explorer, or waiting for My Computer to open, take forever. There are no processes hogging system resources that we can see... the machine itself is just exhibiting extremely slow behaviour. I've never seen a machine do this. A lot of security updates had built up, so we decided to let Windows install them. When we looked through the history upon restarting, though, they had failed with error code 800706BA. I don't know if this could be related or not. Any help in this matter would be greatly appreciated. As mentioned in the title, we're running a Windows Server 2008 R2 machine. It's also running SQL Server and IIS. It has 16GB of RAM and a decent Quad Core processor. It's also been fine until now -- and we haven't changed a thing. Thanks for any help.

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• I'll be setting up a dedicated web server at work soon, my first non hobby server - What should I know?

  - by Rogue Coder

  I've been running my own dedicated server running CentOS and a LAMP stack for 2-3 years now, but it's only been hosting my own websites which aren't super important. However, I will soon be setting up a Linux Webserver and Linux Database Server at work, and I'm wondering what are some important things I should be doing. It's an internal server only, so only people in the company can access it. Should I get a slave server for both of my servers for backups? If I do this, how many backups should I be keeping and how often should those backups be done? Right now on my current server I run a cron job nightly to backup my MySQL databases (Usually 40mb files once compressed), and bi-weekly cron jobs to backup my web root. I just store these files on my local computer via FTP. Also, for an internal server like this, should I look at using LightHTTPD or NginX to increase performance, or will Apache be fine?

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• Software for categorization with simple GUI

  - by rlesko

  Is there a simple software that would let me categorize, tag and search items that I input in it? It would be like a regular database but with a simplified GUI. I would add items with meaningful description and then categorize them and add tags. Then I would like to search (preferably real-time i.e. the search is showing results as I am typing) based on the item name/description, category or tag. The other option would obviously be that I just click the category or tag and it lists all the relevant results. List of categories and tags would also be a nice touch. Software is needed for Windows 7 or 8 or it can even be a Web app.

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• How may I retrieve data from an Excel table based on a variable number of criteria?

  - by Eshwar

  I have the following salary data for example: Country State 2012 2013 -> 2027 ======= ===== ==== ==== China Other 1000 1100 China Shanghai 1310 1400 China Tianjin 1450 1500 India Orissa 1500 1600 So now in another Excel sheet I would want an answer to one of the following questions: What is the salary in Shanghai for 2013? (Answer would be 1400) What is the salary in Hubei province for 2012? (Since it is not listed, use "Other" - 1000) What is the average salary in China for 2013? (Answer would be 1450) What is the highest salary in China for 2012? (Answer is Tianjin) So as in the above order of priority, I would like those numbers in another Excel sheet using some form of query. I considered PivotTables but I was wondering if there is another much better more efficient way of doing this? I imagine SQL is suited for this but I am not clued up on that. Some Excel functionality is much rather preferred. Also suggestions on an appropriate format of data for such queries would be appreciated.

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• Server error at large posts

  - by Shirko

  On a large drupal site, the database server is on a separate server connected directly to the web server. The web server uses apache and memcached. The problem is that whenever the post is a large, say larger than 10KB, the server does not return correctly. I checked both apache and mysql logs but could not find any trace of errors being logged. The error happens also when I use nginx/php5-fpm instead of apache. Despite this, the large posts are registered, however incorrectly so that they show up for admin when I open a new page on the site. I'm really confused and appreciate your hints to pinpoint the possible sources if this chronic problem.

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• Issue changing mysql password on Debian

  - by Sean

  I installed mysql on my Debian server. I couldn't get into the database because it kept saying I put in the wrong password so I looked on the internet and found that I could log onto mysql using the command sudo mysql --defaults-file=/etc/mysql/debian.cnf From there I went typed use mysql;then mysql> UPDATE user SET password=PASSWORD('password') WHERE user='root'; Which I know switched the password because I typed the command select Host, User, Password from user; And it showed the encrypted characters had changed for all three of the root user categories. But I am still not able to login to mysql using mysql -u root -p

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• Optimal way to make MySQL backups for fairly large databases (MyISAM / InnoDB)

  - by WinkyWolly

  Currently we have one beefy MySQL database that runs a couple of high traffic Django based websites as well as some e-commerce websites of decent size. As a result we have a fair amount of large databases using both InnoDB and MyISAM tables. Unfortunately we've recently hit a wall due to the amount of traffic so I've setup another master server to help alleviate reads / backups. Now at the moment I simply use mysqldump with a few arguments and it's proven to be fine.. until now. Obviously mysqldump is a slow quick method however I believe we've outgrown its use. I now need a good alternative and have been looking into utilizing Maatkits mk-parallel-dump utility or an LVM snapshot solution. Succinct short version: I have a fairly large MySQL databases I need to backup Current method using mysqldump is inefficient and slow (causing issues) Looking into something such as mk-parallel-dump or LVM snapshots Any recommendations or ideas would be appreciated - since I have to re-do how we're doing things I rather have it done properly / most efficient :).

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• my.cnf in server directory, why

  - by Mellon

  On my Ubuntu machine, I have installed MySQL . I notice that there are /etc/my.cnf file which contain the content (only two lines): innodb_buffer_pool_size = 1G max_allowed_packet = 512M While there is also /etc/mysql/my.cnf with a long content like: # The MySQL database server configuration file. ... ... For me, it looks like both are configurations for MySQL server, but Why there are two my.cnf in different locations, can't the content to be merged to one my.cnf ? What is the purpose to have seperate my.cnf for MySQL server ?

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• Corrupt mysql system tables

  - by psynnott

  I am having issues with the columns_priv table in the mysql system database. I cannot add new users currently. I have tried repairing it using mysqlcheck --auto-repair --all-databases --password but I get the following output: mysql.columns_priv Error : Incorrect file format 'columns_priv' error : Corrupt Is there any other way to repair this table, or how do I go about replacing it with a blank table? What would I lose by doing that? Thank you Edit (Additional Info) mysqld is currently using 100% cpu constantly. Looking at show processlist, I get: mysql> show processlist; +-----+------------------+-----------+-------+---------+------+-------------------+------------------------------------------------------------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +-----+------------------+-----------+-------+---------+------+-------------------+------------------------------------------------------------------------------------------------------+ | 5 | debian-sys-maint | localhost | mysql | Query | 1589 | Opening tables | ALTER TABLE tables_priv MODIFY Column_priv set('Select','Insert','Update','References') COLL | | | 752 | root | localhost | NULL | Query | 0 | NULL | show processlist | +-----+------------------+-----------+-------+---------+------+-------------------+------------------------------------------------------------------------------------------------------+ 2 rows in set (0.00 sec)

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• SQL Server Read Locking behavior

  - by Charles Bretana

  When SQL Server Books online says that "Shared (S) locks on a resource are released as soon as the read operation completes, unless the transaction isolation level is set to repeatable read or higher, or a locking hint is used to retain the shared (S) locks for the duration of the transaction." Assuming we're talking about a row-level lock, with no explicit transaction, at default isolation level (Read Committed), what does "read operation" refer to? The reading of a single row of data? The reading of a single 8k IO Page ? or until the the complete Select statement in which the lock was created has finished executing, no matter how many other rows are involved? NOTE: The reason I need to know this is we have a several second read-only select statement generated by a data layer web service, which creates page-level shared read locks, generating a deadlock due to conflicting with row-level exclusive update locks from a replication prcoess that keeps the server updated. The select statement is fairly large, with many sub-selects, and one DBA is proposing that we rewrite it to break it up into multiple smaller statements (shorter running pieces), "to cut down on how long the locks are held". As this assumes that the shared read locks are held till the complete select statement has finished, if that is wrong (if locks are released when the row, or the page is read) then that approach would have no effect whatsoever....

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• What type of amazon instance should I use and do I need auto scaling and load balancing?

  - by Navetz

  Hi I am looking to release a website that will initially have large amounts of uploads from users. The first will be 65GB and the rest will probably be close to 1TB. They could happen simultaneously. My question is what type of amazon server instance would be best for this? The website is just being released so the traffic wont be very high. I have been using a micro instance for development but it is time to launch and I need more power. Should I use auto scaling and a load balancer to increase the number of instances when I need it or Will a small or medium instance do the trick? If I do use auto scaling and load balancing how do I handle things like sessions and the database/file lookups? Does one instance become the primary instance and the rest become clones?

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• Mesh Networked servers via vpn

  - by microspino

  I got a design idea and I would like to have some advice from SF about It. I have 5 customers with small real-estate databases. I've built for them a desktop app and now they would like to merge their database to share their data. I don't want to centralize everything in one place nor I want to do maintenance for servers. They told me also, that all of them in their offices, have little servers and maintenance guys available. Although everything seems suitable for web application, I had the idea to experiment something new: Any customer small-server wild be connected to the others in a sort of mesh network without a single point of failure and through VPNs. If one of the servers went down the customers could still connect to their databases from one of the other mesh networked servers instead of from the local one that is down. During normal operations all the servers sync the db with the others through VPNs. I can accept a half-day timing window of NON synched data, in other words, since I don't need real time synchronization, the server don't have to always stay in synch. I can migrate my data over to other Non-Sql technologies like CouchDB or Redis or whatever you suggest. As you can see I don't have a lot of constraints and although I could go with a web application I would like to delegate and decentralize support, data-privacy and management, as more as I can to my customers offices. Is that a crazy idea? Do you know If something similar exist? Which technology would you suggest?

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• Problems creating a functioning table

  - by Hoser

  This is a pretty simple SQL query I would assume, but I'm having problems getting it to work. if (object_id('#InfoTable')is not null) Begin Drop Table #InfoTable End create table #InfoTable (NameOfObject varchar(50), NameOfCounter varchar(50), SampledValue float(30), DayStamp datetime) insert into #InfoTable(NameOfObject, NameOfCounter, SampledValue, DayStamp) select vPerformanceRule.ObjectName AS NameOfObject, vPerformanceRule.CounterName AS NameOfCounter, Perf.vPerfRaw.SampleValue AS SampledValue, Perf.vPerfHourly.DateTime AS DayStamp from vPerformanceRule, vPerformanceRuleInstance, Perf.vPerfHourly, Perf.vPerfRaw where (ObjectName like 'Logical Disk' and CounterName like '% Free Space' AND SampleValue > 95 AND SampleValue < 100) order by DayStamp desc select NameOfObject, NameOfCounter, SampledValue, DayStamp from #InfoTable Drop Table #InfoTable I've tried various other forms of syntax, but no matter what I do, I get these error messages. Msg 207, Level 16, State 1, Line 10 Invalid column name 'NameOfObject'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'NameOfCounter'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'SampledValue'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'DayStamp'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'NameOfObject'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'NameOfCounter'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'SampledValue'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'DayStamp'. Line 10 is the first 'insert into' line, and line 22 is the second select line. Any ideas?

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