Data Distribution On Data Files
Nov 13, 2007
Hello
I have a database with two data files configured under primary filegroup. Both the files are set to grow automatically till the disk space is full and both the data files are in the same drive on same physical disk.
When the transactions are happening in the database,how the data is getting distributed on both data files?
Will the transactions is inserted in to the primary data file first and once that is full it will start occupying the secondary data file?. How this distribution is happening?
Thanks in advance
Regards
Arvind
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Jun 20, 2007
I haven't found the definitive answer on how or if this can be done without removing replication. I'm thinking ALTER DATABASE modify_file is the way to go. Anybody know if this will work or a better way to go about it?
Thanks
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Jul 13, 2007
We've got the requirement where we need to load data (usually dirty of course) from a flat file, and for every column, if the value is invalid, I'm putting a -1 in the field as it flows through the data stream - no problem. (I'm converting all invalids to -1 so they'll go into my eventual int column)
My question though is - at the end of the data flow, is there any smooth way to capture the % invalid values in each column. An example: If my table is as follows...where the # 1 signifies "clean data" and -1 signifies dirty.
col1 col2 col3 col4
1 1 1 1
1 -1 -1 1
-1 1 -1 1
-1 1 -1 1
I would want my % distribution query/ssis result to return:
col1 col2 col3 col4
.5 .25 .75 0
I do not want to do a select/ssis process for each column. Any way to do this all in one shot?
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Aug 19, 2015
I have been asked to create a report for one of our clients. The report is pretty basic but I am concerned about the overheads with my planned approach.The report is at a table and field grain to include values for:
* Min column value
* Max column value
* Number of discrete values
* Number of populated values (not NULL)
My current plan is to have a cursor over a limited view of sys.tables and sys.columns that will run a dynamic SQL query to import the results into a table that I can then output.There must be a better way of doing this and I don't have access to any DQS services.
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Jul 20, 2005
Hello all. Before my arrival at my current employer, our consultantsphysically set up our MSSQL 7 server as follows:drive c: contains the mssql enginedrive d: contains the transaction logdrive e: contains the data filesNo filegroups were set up and the data files consist of only 1 largephysical file. Currently, our data file is >10GB. When I was trained onthe physical aspects of sqlserver, I was told to never create physical files[color=blue]> 2048MB each. If I did, I could expect inefficient physical storage of[/color]data and slower performance (due to the OS).Our server has 2 RAID-5 arrays. Drive c: and e: are located on the firstarray and drive d: on the second. We're running Windows 4.0 NT Server SP6with NTFS.Can someone comment on the use of 1 single large data file vs. more smallerdata files?
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Aug 7, 2015
I have an MVC asp.net application that stores many records in a table on sql server, in its own system. Â used the system for 2 months, worked fine accessing, changing data.
Now that other users are logging in? there is cross coupling going on. Â one user gets the data from another users sql search.
In the mvc app it had used the get async method to read the ID record from the db, i set that to synchronous. Â no effect; Â the user makes their own login id but that does nt matter either.
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Jan 30, 2008
Hello folks,
Does anybody have experience with e-mail distribution using Data Driven Subscriptions?
I want to build the following:
I have a table with names and e-mail addresses of people in my data warehouse. This table changes over time, more people will be added and data (for example e-mail addresses) can change.
I made 1 report that I want to mail to all the people in the table. This report contains 1 parameter; the e-mail address of a person.
So basically it€™s quite simple: I want to e-mail all the people in the table a personalized (by the parameter) report each month.
Can anybody tell me how I can achieve this with SSRS 2005(SSEE)? I know how to make a data driven subscription but how can I make one pending on the data in a table?
Any help would be appreciated. I will write a blog about this when I've done it so your input will not get lost.
Jorg
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Mar 10, 2008
i am really in need of help. i have a text file consiting of some data.i want to update my database from that text file periodically say 12 hours.the text file is being updated by another server program in every 12 hours can any one help me in this case? i am lost for this scenario?? help me please.....
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Dec 10, 2005
Hi,I have(had) an old Win2k Server server with about 30 web site databases(SQL 2000) that just went under due to hardware problems. Thankfully, Ihave backups of all the databases plus the MDF and LDF files from thehard drive.I want to move all of these sites and their data to a newer server(Win2003) running SQL2000.What's the best way to copy the database from the old server hard drive(now mounted as an extrnal drive to a local machine; I'm currentlyFTPing all of the web site directories from it to the new server)?Just upload the original data to the new server and then mount the MDFand LDF files within the new SQL server? Or do I restore the backupfiles in the new SQL2000?All of my previous data migrations have been DTS operations from onelive server to another, so no experience with either of the abovescenarios. I'll certainly have a lot more experience at one of them bythe time this weekend is through.Thanks for any help you can offer.
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Sep 27, 1999
Can Any one Please help me identifying only the needed distribution files list for SQL Server 7.0? (Without Installing SQL 7.0 Client..)
Thanks,
Siva
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Jan 9, 2015
I proposed on a new server that we separate Data Files, Log Files, tempDB, Backups, etc. onto separate LUNS on a SAN with High Speed Solid State Drives.I was told that with the new technology with solid state SAN's that it would decrease performance and that it did not work the same way as it did when you had RAID 5's etc.I thought that if things were cared out correctly by a SAN Administrator they would know how to configure for optimal performance.
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May 1, 2008
I've got three files (sql 2005 std edition x64) that were downloaded from the volume license software distribution download site. One appears to be the SP2 (SW_CD_NTRL_SQL_Svr_2005SP2_64Bit_X64_English_1_X13-36347.EXE). But the other two I can't figure out how to handle. I've unzipped them both (SW_CD_SQL_Svr_Standard_Edtn_2005_64Bit_X64_English_1_x64_MLF_X11-57664.EXE SW_CD_SQL_Svr_Standard_Edtn_2005_64Bit_X64_English_2_x64_MLF_X11-57665.EXE) and they appear to have differences in what they contain, BUT there are no instructions on how to proceed with the install. I'm guessing one of them is the 32 bit versions of the management tools that still run in 32 bit mode and the other is the server. The readme's in both are the same. There are no directions on what to do or how to proceed with the installation. I've started both installs just to get far enough to see that they both want to install prerequisite software but neither tells me that this is 64 bit prerequisite. They look identical to that point.
Please point me in the right direction for some instructions on how to install this. I've installed SQL hundreds of times, but this one has be stumped on the proper process.
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Sep 17, 2001
I have an sql 6.5 server that has had it OS (nt4.0) reinstalled on c:.
sql was installed on d: and all of the dat files are still there, i need to recover data from one of these, i tried install on a new machine and creating a device/db with same name and then over writing the file with the old one but enterprise manager shows it as suspect and will not let me work on it.
Any assistance would be appreciated.
Dominic
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Sep 17, 2014
I've been using replication for a long while now but have never come across this error. It's a basic transactional replication from ServerA to ServerB, where ServerA is also the distributor. Everything had been running fine on it until yesterday, when this error started popping up and no further transactions could be delivered.
After some quick googling I was able to determine that the distribution agent account needed write access to C:Program FilesMicrosoft SQL Server100Com. According to the MSFT article it's because the distribution agent is running under a non-default profile. I didn't change this. However, what I did change around the time that these errors started occurring was the server's Replication Max Test Size setting. It would be far too coincidental for this to not be the cause, but what I don't understand is *why* that would have changed it.
how do I change this? It is definitely not preferable to create temp files in this directory in our environment.
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Sep 17, 2004
Hi!
I'm using replication with two database on SQL 2000,when begin, the log files size is 50mb and the data files size is 150mb. But now the log files size is 2Gb and the data files size is 4Gb. I would like to decrease the log files and the data files ??? How do i do this???
(I using Truncate and shrink doesn't change )
Thanks!!!
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Nov 24, 2006
Hi, all here,
Thank you very much for your kind attention.
I am wondering if it is possible to use SSIS to sample data set to training set and test set directly to my data mining models without saving them somewhere as occupying too much space? Really need guidance for that.
Thank you very much in advance for any help.
With best regards,
Yours sincerely,
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Mar 14, 2007
Hello all,
I am installing SQL Server 2005 on our server and have researched with no success on how to redirect the Data Files and Log files to a different drive, e.g. D: drive. In SQL Server 2000 you specified where you wanted to place the LOG files and Data files upon Setup.
I have looked everywhere in SQL Server 2005 install and cannot find where I can tell it to place the Data and Log files. Please point me in the right direction.
Your help is greatly appreciated,
Dan
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Jul 6, 2007
On SQL Server 2005 SP2 for Publisher and Distributor on the same instance, my old snapshots are not being cleaned up.
The following error is in the agent history:
Executed as user: DomainMyUser. Could not remove directory '\vmsql01ReplDatauncPublication_TRANSACTIONAL20070702104416'. Check the security context of xp_cmdshell and close other processes that may be accessing the directory. [SQLSTATE 42000] (Error 20015). The step failed.
xp_cmdshell is enabled and I can run commands like :
exec master.dbo.xp_cmdshell ' md c:TestFolder'
The permissions to the snapshot share and file system are that DomainMyUser has full control.
I have logged into the machine as this user and can remove snapshots so it does not seem to be a permission issue.
On other machines I do not get any errors but the snapshot folder still is not cleaned up.
Any suggestion as to what the problem could be?
Thanks,
Amy
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Aug 14, 2006
hi
just wondering if any expert out there can answer my question.
i got a database separate into 3 datafiles in 3 different drives.
i will name it A, B, C.
A datafile size 30G, B datafile size 15G, C datafile size 15G.
and the drive for datafile A is about full. so is there anyway i can more some of data from A datafile to other data file? or since A+B+C =60G can i make it all 20G for each one of them by any command? thanks!!! :)
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Jun 26, 2001
Hello Group,
I have a SQL Server 2000 database that has never been backed up. The SQL Server database can't be logged into due to an SSL Security Error, thus I can't get to the backup utilities within Enterprise Manager.
What data files do I need to backup manually and what steps do I have to take to backup these files to a tape and rebuild the server?
Thanks
Kevin Kraus
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Jun 8, 2004
Hello,
My first post, I don't know much about MS SQL.
I have the .mdf and .ldf files from an MS SQL 2000 server. I don't have MS SQL server running on my home machine. I'd like to be able to extract the data from the .mdf file to something I could use on my home machine. XML would be good, CSV would be ok too, maybe even some way to import into MySQL. Any help would be appreciated, also if I've some how missed the forum faq, please point me to it.
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Sep 15, 2004
I'm kind of new to sql server (but experienced in Oracle) and I've got a couple of questions I wanted to bounce off you guys.
I'm implementing a SQL server cluster right now (2 node on Win2K3, shared EMC DASD for databases). We're at the very preliminary phase of this. I did an install and had my resource group set up with all of my disks on it. When prompted for the data file drive, I gave it one, but it put all the tlogs for the 'out of the box' database on that same drive as the data files (i.e. master, model, tempdb, etc.). The doc is a little vague in some of these areas (i.e. it says separate logs and data files on different disks, but then never actually tells you how to do that).
Now, I know how to specify the default paths for data and transaction logs for any NEW database I create and that's not a problem. However, my question is, how do I 'move' the tlogs from the databases created during the install? I've tried a detach, move tlog to separate physical drive and then reattach the db, but whenever I do this, SQL server wants to create a new tlog for the db on the same old drive as the datafile. I also can't delete the original tlog from a particular database even after I've created an additional tlog on another disk.
Any help is much appreciated. I'm more or less looking for the strategy any of you might take to set up this initial phase.
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Jan 25, 2005
We have a large Database (91 GB) that is currently in one large data file. Now that we have muliple disk arrays I can split that up on I would like to have a couple data files. My question is, what is the best way to split this up? Should I keep one primary file group and just create another file, or should I create a file group for indexes and put those on that? This database is used for reporting only so it doesn't really have any writes being done on it.
Thanks much.
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Jun 15, 2006
We are storing all our SQL 2000 databases on SAN LUNs, and one of our databases currently uses a single 40GB file which is approaching capacity. If we add further files using different LUNs, the data will start being added to these new files. My questions are these: if we were to add a number of new LUNs to this database, is there a way to redistribute the existing data so it is balanced across all files in order to gain the most benefit from having multiple files, rather than just dispersing the additional fragments across the new files?
Will the optimise feature of the maintenance plan do this automatically during the index rebuilds?
Is it better to add more files to the PRIMARY filegroup, or add a number of filegroups with single files in each? We aren't looking to use filegroups for fiddling with our backups by the way.
Many thanks for any recommendations offered.
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Feb 13, 2007
How can I combine two data files (i.e .mdf and .ndf). We had two data file in our old server due to disk limitation. In the new server we don't have such limitation so we like to consolidate the two file in one. What is the best way to accomplish that?
Thanks
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Mar 30, 2004
Hi,
How do you defragement SQL database data files? Running the DBCC DBREINDEX , DBCC INDEXDEFRAG, does that minimize fragmentations of the tables and the indexes files or is it just the index files?
Thanks in advance
a
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Nov 16, 2007
Hi all
I'm a newbie with SQl Server But somewhere i read that SQL server Data can be Recovered through *.LDF files
now i want to know if i open a table in Enterprise-Manager and delete some records through DELETE statement or
manually, is it possible to recover those deleted records or not? if so how?
Thanks in advance.
Regards.
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Dec 4, 2007
Hi All
i am bit confused about how data and log files grow in databases. suppose i turn off the auto grow and restrict the maxsize upto some limit but size of data/log file is less then maxsize at some stage because what i understand is size of data/log file keep changing depends upon the activities going on the database. in future if data/log file need to grow can it grow upto the maxsize without turing on the auto grow.
regards
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Feb 29, 2008
Can someone help me out in telling me what a data cube is and if you have any examples I can look at?
We are in the process of using data cubes through SQL. What we are looking for is to be able to have summary of data, but if we wanted to click on a grouping we can go to the details of the data.
I just wanted to know if there was any infomation/websites I can go and look at.
Thanks,
Wendy
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Sep 7, 2005
Hi guys,I have been trying to write data from a database to XML files andalthough i have been successful in doing that, the file(s) that are madeare not of the form that I would want.I am using:SQLDataSet.WriteXml(strFileName, XmlWriteMode.WriteSchema);to generate the files where strFileName is the name of the file. Thefiles when viewed with XML Editor are seen as lines of data instead ofthe regularly generated XML where each row is one below the other. Whenviewed with WordPad/Notepad i see elements />< betweeen the dataand somehow I think this has to do something with the problem.Can someone help me with this?? Any help or suggestion would be greatlyappreciated.Thanks.*** Sent via Developersdex http://www.developersdex.com ***
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Jul 20, 2005
hello,my problem is how to move data files drom drive c: to drive d: ??--MarcinS
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Oct 18, 2007
Hi,
My first post.
Problem:
I have 2 tables EmployeeA(Eng) and EmployeeB(Spanish) kept in seperate mdb's. I want to add the records into Sql Server 2005 table called StateEmployee.
Procedure:
1. Loop through 2 folders..one containing table EmployeeA in mdb and other containing tbl EmployeeB in diff mdb's.
2. Pick a file from EmployeeA and EmployeeB, both at the same time.
3. Count the total no of rows in both files. If equal proceed.
4. Compare the 'employeeid' of one row of employeeA to the employeeid of EmployeeB.
5. If employee id matches, load both the rows in Sql server else file it to the error table.
6. Loop through all rows simultaneously till end of row.
7. Go to next mdb.
How do i go about this step by step. I am fairly new to SSIS. I asked my other friends too but they have complex answers which i couldnt follow. Hope someone gives an 'easy to understand' solution with sample.
thanks.
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Mar 24, 2007
I copied a database using backup and restore from Sql server 2000 to Sql server 2005. I noticed the data(mdf) and log(ldf) files did not copy. when I try to do a copy and past it gives me an error: cannot copy lof: it is being used by another person or program. Close all programs and try again. Does this mean I have to stop both servers to copy between them? Please help.
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