File Placement On Server With 2 SQL Instances
Jan 25, 2008
I have a server with 2 instances of SQL installed. There are 6 physical disks in the server which have been made into 3 mirrors.
The first mirror has the OS on it. Currently, the 2nd disk has all the database and transaction log files from both instances of SQL.
I plan to make use of the 3rd disk. My question is: is it better to move the database and transaction log files from the second instance to the new disk so that all the files for the first instance are on disk 2 and all the files for the 2nd instance are on disk 3 OR is it better to keep all the database files from both instances on disk 2 and move all the log files for both instances to disk 3?
I'm sure I have read somehwere that in this situation, the disks should be separated by instance rather than seperating by file type.
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Feb 2, 2015
Database File Placement Layout? We are planning to implement a new SQL Server 2014 OLTP Database with a 1 TB Data file and 1 TB Log File. I am looking at the possible layout of the database files and trying to determine the best possible configuration. My knowledge/research tells me that items which need separate storage due to constant simultaneous access are:
Data files – should go on the fastest reading storage.
Log files – should go on the fastest writing storage.
TempDb – involves a lot of writing at the same time the data files are being read.
Indexes - (including full text indexes) - involves a lot of writing at the same time the data files are being read.
Also, are there any benefit to having multiple OLTP Database Log files? Because SQL Server writes to the log file sequentially, I do not see any advantages to having multiple database log files. In a SQL Server 2012 Class I took last summer, under “Determining File Placement and Number of Files”, it states “Use a single log file in most situations as log files are written sequentially.”
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Nov 30, 2004
Can I choose where I want to store my database using MSDE
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Jul 20, 2005
Hello All,I am looking at the performance of our production database. It is40gb, and growing reasonably fast. It is placed in one file group on aRAID-5 array. The array is made up of 20 (or so) 9gb disks. The data,the indexes and the transaction log are all on the "one logical disk".My question then, is, would it be better to move the transaction logonto a separate device (with Raid-1), and then separate out theindexes and the data and to place them onto separate devices (ie.split the raid disks into 2 new drives). Or would it be better toplace the table into a larger number of smaller filegroups effectivelysplit across the raid device and to (strategically) place differenttables into the new logical disks. Does this make sense?Or, do I just leave everything as it is?CheersMike
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Aug 16, 2007
Can anyone point me to any Microsoft articals giving reccomendations for file placement for SQL server? We are trying to convince our Hardware guys that we need separate disks for data/log/tempdb files and need some ammo.
Thanks,
Jason
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Jul 21, 2004
Hello,
I have a question about how I can change the database placement on our HP MSA1000 SAN. Basically I'm concerned about the performance of one particular server with 40+ databases. I'm familiar with the standard recommendations such as separating data and log files onto different physical drives, etc. But how is this going to be possible when there are only 14 physical drives available in the MSA1000? I also have to be concerned about the other server that's attached. Any suggestions, besides getting additional storage... :)
Thanks.
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Sep 8, 2006
I need some help understanding the benefit of creating tempdb with one file per processor. I believe the benefit has something to do with the way SQL Server utilizes processor threads, but I'm a bit weak on the details.
Thanks, Dave
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Feb 22, 2007
Using SQL2000
Is it recommended to put tempdb data and logs files on different drives?
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Feb 22, 2007
Using SQL2000
Is it recommended to put the tempdb data and log files on different drives?
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Aug 24, 2007
What is the best performance for this configuration:
Files:
Data
Log
Indexes
tempdb
Disk:
A - RAID 10
B - RAID 10 (or should this be RAID 1?)
Whats best?:
A - Data and Indexes
B - tempdb and Log
??? Thanks.
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Sep 28, 2007
When I am in Visual Studio 2005, and I try to add an SQL database, I get the following error "generating user instances in sql server is disabled. use sp_configure user instances enabled to generate user instances." I am currently using SQL server 2005 Express. What do I need to do, to create an SQL database? Thanks in advance.
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Jul 18, 2001
I had a server with SQL Server 7.0
I installed a named instance of SQL Server 2000 and then i passed all my DB
of the 7.0 instance to the 2000 instance.
Then i removed the 7.0 instance, that was the default instance.
So at the moment there is only the 2000 version, but it isn't the default
instance
Can the 2000 instance become the default instance? (So that clients can
connect to it simply through computer name, and not creating an alias)
thanks
Fede
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Nov 4, 2015
I like writing concise and compact sql code without cursors if possible. My current dilemma has me stuck though.I have 3 tables, but one of them is optionally used and contains a key element of TimeOut to determine which Anesthesia CrnaID to use. It is the optionally used part that has me stumped.
Surgery table
CaseID
Patient
(Sample data: 101,SallyDoe 102,JohnDoe)
Anesthesia table
CaseID
CrnaID
(Sample data:
101,Melvin
102,Bart
102,Jack)
AnesthesiaTime table (this table is optionally used, only if the crna's take a break on long cases)
CaseID
CrnaID
TimeIn
TimeOut
(Sample data:
102,Jack,0800,1030
102,Bart,1030,1130
102,Jack,1130,1215)
Select Patient INNER JOIN Anesthesia produced too many case results. So, I figured out there is an AnesthesiaTime table that only gets used if the anesthesia guys take time-outs. That doesn't happen all the time. I could use TOP 1 on the Anesthesia table, but technically I need to read the AnesthesiaTime table and locate the last time and pull that crna, Jack. I'm not sure how to deal with an optional table. I believe the IF Exists will be pertinent, but not sure of how to build this query. I've tried subquery without success.
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May 24, 2015
I have a table called 'AssetPlacements' that shows the dates when certain objects (AssID) were placed at certain locations (LocID).
ID AssID LocID PlacementDate
1112015-05-01
2122015-05-06
3132015-05-09
4212015-05-03
5222015-05-07
6232015-05-11
I'd like to show the assets with a start date and end date for the placement of the asset.
The start date to be the placement date and the end date to be the next placement date of the asset.
Where there is no next placement date to then show the end date as the current date, so hopefully the table will show as the following.
ID AssID LocID StartDate EndDate
1112015-05-01 2015-05-06
2122015-05-06 2015-05-09
3132015-05-09 [GetDate()]
4212015-05-03 2015-05-07
5222015-05-07 2015-05-11
6232015-05-11 [GetDate()
I'm guessing some sort of recursion is required here to produce this.
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Mar 14, 2008
Hey guys
I have someone telling me that you can improve performance in SP's by placing all the DDL at the beginning of the procedure. ie. Do all your CREATE TABLE #tbl and DECLARE's before the rest of your code.
Any thoughts on this?
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Dec 21, 2006
Is there any thought going into moving these two tables to a file group that we can control? Putting this in Primary with the rest of my system tables is quite problematic, and hinders my ability to manage space usage on my files. Traditionally, we didn't have to consider a primary file group that could grow to large proportions, but now with these two tables it can. If a large volume of messages gets sent through and the system can't keep up, then these tables and my primary file group will grow sometimes enormously.
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Apr 30, 2007
We are creating a company-wide table of ZipCodes, States, GPS info, etc. This table can be used by our development and production servers (many of them.) We could place the table on a given server and use linked servers to grant access to that table to the other servers. But is there a better way to handle this globally-useful table?
Barkingdog
P.S. Clearly, we don't want to have multiple copies of this table scattered around on various servers. That introduces synchronization issues.
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Jul 2, 2015
I've got a feeling that the answer is, "can't be done," but I'll go ahead and ask the august members of this forum, anyway. Is it possible to alter the placement of the Parameter fields when previewing a report?
At the moment, it seems that they form in a column of twos, reading from left to right. I see how the ORDER is affected, by changing the order of the parameters in the Report Data window, but can I change the number of columns?
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Apr 18, 2015
I can't seem to place the "option (recompile)" in any valid position so that the following procedure executes without a syntax error .
USE [PO]
GO
/****** Object: StoredProcedure [dbo].[npSSUserLoad] Script Date: 4/18/2015 3:57:38 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[Code] ...
-- Generated code - DO NOT MODIFY
-- From Object Schema: 'C:XXXXXX.NetPOPOModel\_ObjectSchema
-- To regenerate this procedure use the 'Open With' option on file _ObjectSchema and select POCodeGen.exe
Declare @SqlCmd nvarchar(max)
Declare @ParamDefinitions nvarchar(1024)
Set @ParamDefinitions = N'@UserId int,NTUser varchar(30), @XmlResult XML OUTPUT'
Set @SqlCmd = N'Set @XmlResult =
(
Select
[UserId] [a],
[UserName] [b],
[code]....
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Mar 5, 2007
Hi Dears, How can i detect the Local SQL Server instance (server name, uid, pwd) installed in a standalone systemusing C# 2.0?I used the fucntions available in odbc32.dll, but it only returns the result while the systemis connected in network.can any one resolve this....?thanks in advance...yenkay
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Jul 30, 2001
with sql server 2000, it is possible to have multiple instances on one server. Now I want to make the second server a subscriber for specific tables before there are some tests/major changes. Has anyone experience with this on the same server. Note : sql server subscriptions between different servers in sql server 7 is not the issue.
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Sep 20, 2001
I created a named instance of SQL Server 2000 on my notebook. I inadvertantly set the trusted SQL connection to Windows Authentication. This is creating a problem with COM because of username and password. I want to reset it to use SQL Server authentication but I can't find where to do it. Can I do this or do I have to delete this instance and create a new one.
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Jun 4, 2008
Hi Gurus,
What process i should folloew to ctrae instance on server.
Thanks,
ServerTeam
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Mar 25, 2008
Can someone explain what "named instances" means with regard to SQL?
Is this one Physical Server With multiple installs of SQL SERVER and / or databases ?
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Thanks,
Scott M
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Aug 8, 2005
Dear SQL Guru,I just found out this morning that my SQL Server box had been added 1more instance. Below is the example:PPAPP0075FINANCE (Old instance)PPAPP0075ACCOUNTING (Old instance)PPAPP0075Accounting (new instance)This is a case sensitive MS Sql server (third party vendor App). TheACCOUNTING instance is the one we have been using for our currentapplications. I found out the new one(Accounting) when I scan thenetwork by using OSQL -L utility. However, when NT engineers tried toverify the physical files location ofAccounting, and it did not exist. When I tried to register it and itdoes not appear from Enterprise Manager.Please keep in mind NT Engineers have been monkey around on this serverquite a lot in last a few weeks, especially modifying Registry keys.My question is, where did PPAPP0075Acounting come from? We never evertried to install any more instance on this server.Please help,Thanks,Silaphet,
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Jan 17, 2006
Hi all,
I already have a copy of SQL SERVER 2000 installed on my current local machine.
How is it possible that I create another second instance for example TEST/silkkeng in SQL Server Enterprise Manager? OR SQL query ?
Is it possible ? Or the only solution is ReInstall SQL to create another instances?
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Jul 10, 2006
Hi, I've got an application which uses the DBFactory Provider to enumerate a list of available SQL instances on the local network.
I've just reformatted though and put everything back on, and my application will now see the sql server instances on the network, but not the instances on the local computer (only the server name), eg, it will see "BENSQLEXPRESS" on a computer (BEN) on the local network, and give the version info, etc, but it only sees "DAN" instead of "DANPCP" and "DANSQLEXPRESS" on the local computer (DAN).
Regards,
Ben
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Dec 29, 2007
Hai,
One more question with related to SQL Server, I was using SQL Server 2005(Express Edition).
I was using SQL Server Instances as
.SQLExpress
Suppose if i install the Enterprise Edition , what is the default instances and other build-in instances:
Thanks.
Regards
Kashif Chotu
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Jul 31, 2007
Hi there,
I was wondering if it's possible to create a new instance in the SQL Server something like this:
(Local)\MSSMLBIZ
(Local)\BUSINESS
Thank you
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Nov 20, 2006
Hi all,I just asked some people to help me out and phone microsoft with thefollowing information, kindly they refused unless we setup a supportcontract with them first, for pre-sales information. (That really doesnot sound like good business sense to me - anyway here is our problem,if anyone could help thanks)."To tell and ask microsoft:We will be setting up a microsoft sql server 2000 instance running on awindows 2003 server.1) We need to check this can run alongside a microsoft 2003 sql server(either workgroup or standard edition), on the same machine. Are thereany .dll clashes if we do this? If there are can we run SQL Server2000, in a virtual machine running windows 2000 professional. (I have alicenced copy we can use for this).2) If we run one instance of 2000, and one of 2003 of the sql servers,can one use the processor licence model, and one use the CAL licencemodel."Thanks for any help, and any idea why they actually force you to usenews groups for pre-sales information?David
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Jun 23, 2015
I am playing around in a test environment with SQL Server 2014. I have a question about the default location of the report server databases when you have multiple report server instances installed on one server.
I did a very simple install of SQL Server 2014 with the database and Reporting Services in Native Mode (install only) features selected. Accepting the default locations, I ended up with the following locations as you would expect:
C:Program FilesMicrosoft SQL ServerMSSQL12.MSSQLSERVER
C:Program FilesMicrosoft SQL ServerMSRS12.MSSQLSERVER
Running the Reporting Services Configuration Manager, I created the Report Server database. After creating the Report Server database, the related files will be located below in the SQL folder as I would expect.
C:Program FilesMicrosoft SQL ServerMSSQL12.MSSQLSERVERMSSQLDATA
Next I installed another instance, which I called Test, of SQL Server 2014 like I did above. I now have the following folder structure the Test instance as I expect.
C:Program FilesMicrosoft SQL ServerMSSQL12.TEST
C:Program FilesMicrosoft SQL ServerMSRS12.TEST
Running the Reporting Services Configuration Manager, I select the Test instance and create the Report Server Test instance database.
My first thought would be that the Test instance Report Server database would be in the following location:
C:Program FilesMicrosoft SQL ServerMSSQL12.TESTMSSQLDATA
Instead this database is located with the default instance Report Server database:
C:Program FilesMicrosoft SQL ServerMSSQL12.MSSQLSERVERMSSQLDATA
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Apr 3, 2007
Hi,
I want to list the instances SQL server in the network and their corresponding database. I found an API which list the server names in the network, but only for the main SQL server it is connecting and listing the database. For others it times out and gives run time error [DBNETLIB] Connection Open () SQL server doesn¡¯t exist or access denied
could anyone help on this
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Jan 13, 2005
Hi,
We had 5 instances of SQL Server running on one of our machines and everything looked to be working fine. Today I installed another instance for a new application and once done and rebooted the new instance didn't show in the SQL Server Enterprise Manager. At this point we decided to uninstall it. After that 4 of the existing instances have diapered as well even though they are running and responding requests from their respective applications.
I did some googling and all I could see is something related to a command called nscontrol but I couldn’t find any nscontrol executable on that machine.
Does anyone have any idea what this problem could be?
Thanks
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