Clustering Basic Questions
Oct 18, 2004
Im studying sql server clustering at the moment and have come across many points which confuses me. Can any SQL Clustering Guru clarify some of them for me or point me in the right direction. thanks.
1) Single Instance clustering now replaces Active/Passive clustering? If so, doesn't this mean the you cant run an 'Active/Active Cluster' by installing 2 instances of sql server on each node?
2) Multiple Instance clustering now replaces Active/Active clustering?
3) You can only have 1 instance of SQLSERVER on each node in a single instance cluster (2 nodes). However u have more than 1 sqlserver in a multiple instance cluster?
And last but not least, do u know where i can get the latest resources on sql server clustering? apart from microsoft.com. thanks.
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Apr 25, 2007
I'm thinking of setting up clustering and have a basic failover question that I can't seem to find and an answer.
I want to setup two sql 2005 std ed servers and have them clustered. When the servers are running are they both taking requests (load balanced) or is only one server taking requests and the other being updated, waiting for the first server to fail. If this is true, if/when the first server fails does the second one step up automatically?
I couldn't find any resources that answered these seemingly beginner questions. I'm more than happy to read so if you know of any articles/books I'd appreciate that as well.
thanks in advance,
Scott
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Jul 24, 2000
Does anyone know the answers to either of these, given that we are talking about an active/passive cluster using MSCS, and we use Groupwise for mail (don't ask!)?
1) How do I configure Agent Mail on the cluster under this setup?
2) How do I set up linked servers from this setup to other (non-clustered) SQL servers - I can set up the cluster virtual server as a linked server from the others OK, but the other way around doesn't work - perhaps not surprisingly, but is there a way around it?
Thanks
Martin
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Sep 7, 1999
2 Clustering Questions for you.
1. If I cluster 2 SQL servers in an active/active configuration and want to have a seperate disk array to house the data, do I need to have 2 disk arrays, one per server, or can I have one disk array?
2. When installing an application's database on the first(primary) sql server in an active/active configuration, do I need to install it on the second(secondary) server also? The second server will pick up the processes if the first fails.
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May 5, 2004
Hi
A quick question:Can we disbale sa account in sql server 2000?
Rgds
Wilson
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Apr 11, 2006
I've not touched SQL server programming since 1999. I have very littlememory of it and need some clarifications on some basic questions thatI could even use a book for. Until I get myself a good book, someoneplease help me with the answers:1) What are SQL functions and how are they different from storedprocedures? Do both of the programming objects not achieve the samething? What was the need of having one in addition to the other?2) How do we use an "if construct"/if clause within a SQL statement?Can we use conditional checking with the if construct within a storedprocedure? Can you please post a trivial example of a stored procedurewith an if clause?3) Stored procedures can have input parameters as well as outputparameters. Can they also have in/out parameters that are like "byreference" parameters? What's the syntax on Microsoft's T-SQL version?4) How does one check the return value of a stored procedure?Thanks for helping out.
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Feb 13, 2007
Hi All,I am used to other SQL engines, and have a few basic questions--1)If I wanted to conditionally drop a table, does SQL Server have away to natively do this? Many SQL implementations will allowsomething like:CREATE OR REPLACE tablename ASSELECTx,y,zFROM sourcetable;Does SQL Server have something like this? This syntax, both the"create table as select" syntax and the "create or replace" syntaxseem to cause problems.2) Some of our existing queries have a keyword, "GO" where I wouldotherwise expect a semi-colon. Is there a functional differencebetween the two? I seem to be able to replace the "GO" keywords withsemi-colons without any changes in how the script behaves, but Ithought I would check and see if anyone has advice about thedifferences here.Thanks in advance,Ben
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Dec 14, 2004
I have two questions concerning formatting output in SQL.
I have a processer speed column that I would like to make usable. A sample entry is 2793, which I would like to be returned as '2.8 GHz'. I am using the following successfully, but when I try to append the ' GHz' it gives me a conversion error (I have tried putting both a cast and convert around the round statement).
ROUND(CONVERT(DECIMAL,PCCPUSpeed_IN) / 1000,1) + ' GHz'
Secondly, I have a RAM colum that stores values such as 534753280. I would like the results to fallin into 64 Mb buckets. So values between 512000 & 532480 should return '512 Mb'. I realize I can do this using a CASE statement, but is there a better way?
Thanks,
Rob
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May 19, 2004
I've done some basic database stuff with Access and ASP, but I have a client who has told me that he is in over his head and wants me to try getting his "mini CMS" site to work. He told me that he set everything up in Dreamweaver using ASP and "MSSQL"
I have never used what he calls: "MSSQL" before. Do I need software to create an "MSSQL" database? or is it all coded?
Also, one other question. The whole purpose of this site is to have Admin users log in to a page where they can edit the content of a page and upload it. If there is a large block of text, does it all reside in a field in the database, or would it be a link to a text file? kind of like linking to an image since images don't actually reside in the database.
Thanks for any direction you might have
BEN
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Nov 17, 2005
I have created two tables and inserted the data using insert statements. The two tables that I have created are Automobile and Dealer_Info and have a 1:M relation from Dealer_Info > Automobile.
I am trying to list the Vehicle_Model and the number of times they are repeated, but when I run the code (below) the Count is inserted into an arbitrarily made up attribute (No column name). When that happens I cannot sort in DESC order.
I am using SQL(2000)
Select Vehicle_Model, Count(Vehicle_Model) from Automobile
Group by (Vehicle_Model)
Order by count(*)
;
Results:
Vehicle_Model (No column name)
Escort 1
F150 4
Explorer 6
Taurus 12
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Jan 18, 2008
I have been working with SSIS and find myself stopped on what seem like very basic tasks.
Am I right in thinking that, if you want to import a flat file into a SQL datatable, in most PC based systems, that you have to manually cast EVERY SINGLE COLUMN to unicode string, if you don't want to get the 'cannot convert between unicode and non-unicode string data types'? I mean, this is surely a VERY COMMON task, taking a CR/LF delimited ASCII file and dumping it into a database tables? What if you have 50 fields to import?
Am I the only one who finds it very difficult to cast a string from a textfile to a date format? At this point, I always just dump the date to a 8 character string and save it that way, and use a SQL view to cast it to a date. At least SQL Server can do 'basic date conversions'. Is there any way to freeze execution and find out what data was provided to a derived column, if you're trying to do some substring operations and hodge together a date? I couldn't find any. I usually put a extra column in a datatable and plunk some data there to find out 'what it looked like', how else can you debug an SSIS program?
Is there a planned service pack or update to SSIS that will make this more usable? Does Microsoft ever intend to implement an UPSERT type module? Or a File Move operation that handles directories that fill up with log files, each of which have to be added to a datatable and then moved to an archive directory (surely, another very common task - I figured out how to accomplish this but it is far from intuitive, the way it currently works). Sorry for grumbling, but honestly, I find turnaround time to develop a very simple import program is RIDICULOUS. It's quicker to write a COBOL program to issue a bunch of formatted SQL UPDATE statements than using this application.
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Sep 5, 2006
Hi,
I am new to SQL 2005, can someone give me some details instructions about how to do below two tasks:
All my developers are in a window domain user group, I need to grant dbo privileges to that domain group so then can do the their development work. The rule is all objects they create need to be owned by dbo not by there ID. ( I can€™t do it because I got €ś The €śDeafult_Schema clause cannot be used with a windows group€?)
Same as above but this time they only need select permission on tables nothing else.
Many thanks.
PC
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Mar 11, 2004
I'm new to using SQL server and have a few setup questions.
I'm setting up a database for the company I work for. Should I setup a different database for each division in our company (e.g. accounting, project management, estimating, etc.), or should I use just one database? It seems like it would be easier to use one database so I only have to use one connection, but is this ideal? I want all the info from the different divisions to be used together, but at this point I'm confused as to how to connect different databases together, if I were to go this way.
Thanks for any input or ideas!
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Dec 4, 2007
Hello all, this is my first post, I have a couple of basic questions regarding the use of SSIS. I have used SSIS for a couple of years for on off table loads but never implemented production jobs with it so please bear with these questions.
1. When making scripts that connect to one or more databases, is there a way to store the userid and password somewhere besides embedded within the package, such as a web.config file, this would make routine password changes much more manageble.
I guess it was only one question but any help would be greatly appreciated.
Thanks.
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Dec 13, 2006
Hi. I'm reading about encryption and not totally up-to-speed on what the Service Master Key is all about...
Let me paraphrase this book: Microsoft SQL Server 2005 Implementation and Maintenance Training Kit by Microsoft Press, while I ask questions...
___________________________________________________________
The database engine uses the Service Master Key to encrypt...
- Linked server passwords (example?)
- Connection Strings (example?)
- Account credentials (example?)
- All database master keys
You should back up the Service Master Key and store it offsite.
(Even if I never plan to use encryption?)
ALTER SERVICE MASTER KEY REGENERATE regenerates the service master key.
(Is it building a completely different key, or regenerating the original?)
(Why would I want to regenerate it?)
(Does this void all database master keys encrypted by the original Service Master Key?)
(If so, do I regenerate all database master keys voided by the regeneration?)
A database master key is optional.
(So if I have Server A with encrypted database A, that I want to restore to Server B,
I need the following items to perform restore?
- a backup of database A
- the Service Master Key of A at time of backup
- associated password of Service Master Key at time of backup)
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Dec 1, 2006
Hi
We have a small Ethernet LAN running SBS 2003 R2. I have installed SQL Server 2005 that came with that release on the server. I did not specify a named instance.
1) What is the name of the default instance?
2) When I go to a client computer I cannot see the SQL server instance.
For example on my PC I have VS2005. If I go to Server Explorer, all I see is the local copy of SQL Server 2005 Express I have installed on my PC. I see nothing for the server. Does the server need configuring within SQL Server to allow this. Do I need to change permisions on the folders where the SQL Server 2005 files are stored.
In short, what basic steps do I need to follow to get acces to SQL Server on my server from a client.
3) If I want to create a new named instance, do I have to do Run the whole setup again? There appears to be no managemnt tool for instances of SQL server.
Thanks
Steve
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Nov 26, 2005
I'm a long time user of SQL Server 2000 but no knowledge of 2005 Express.
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Apr 2, 2008
Hi,
I really confused , I wanna get an rowid on sql 2000 table so I have created a sproc and it's syntax is OK
How can I check it on sql query analyzer? this sql server 2000
Also How can I use that in select statement?
thanks..
here is my select statement which I have to use sproc inside
select custid,ordernum,sku,amount,
dbo.get_rownums (custid,ordernum,sku ) ???
from tp_cod cod
here is my sproc:
CREATE PROCEDURE [dbo].[get_rownums] @custid as varchar(10),@ordernum as varchar(5),@sku as varchar(10) , @i as int output
AS
BEGIN
DECLARE @SkuID as varchar(10)
--DECLARE @i as int
DECLARE got_sku CURSOR FOR
Select sku from tp_cod where custid=@custid and ordernum=@ordernum
set nocount on
set @i=0
OPEN got_sku
FETCH NEXT FROM got_sku INTO @SkuID
WHILE @@FETCH_STATUS = 0
BEGIN
Set @i =@i + 1
if @SkuID=@sku
begin
return @i
end
else
begin FETCH NEXT FROM got_sku INTO @SkuID end
END
CLOSE got_sku
DEALLOCATE got_sku
END
GO
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Jan 9, 2007
Greetings!
I am writing a proof of concept ASP.net application for my employer and I have run into a couple perplexing issues. First off, In my Page_Load event I have the following code.
txOTHrs.Attributes["onBlur"] = "return calculateTotal(this)";
The onblur event handler is coded as follows
function calculateTotal(tb)
{
var regHrs = document.getElementById ("txRegHrs").value;
var otHrs = document.getElementById("txOtHrs").value;
var rate = document.getElementById("txRate").value;
var regAmt = rate * regHrs;
var otAmt= rate * ( otHrs * 1.5 );
var total = otAmt + regAmt;
document.getElementById("txTotal").value = total;
}
Everything seems to work fine. The onBlur event is handled and, as I expect the value in the txTotal text box is updated correctly. The problem occurs when I try to access that value in the codebehind page. When ever I look at txTotal.Text in the debugger it is always blank. This has left me scratching my head as I can clearly see a value on the web page. Have I missed some step where I have to notify the server that a value in the control has changed ?
My second question is, I hope a very easy one to answer. In WinForms when I have a dataset I can access the individual rows ( in an untyped dataset ) by speficying dataset.tables["tableName"].Rows[index]. Is there any similar mechanism for accessing the individual rows, and fields in the SqlDataSource object in ASP.net ?
Any help anyone can provide is greatly appreciated!!
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Nov 13, 2007
We have 2 env. : Testing and Production, both are running Windows 2003 Enterprise Server with SQL Server 2005. The difference is Testing is NOT running Windows cluster but Production do so, what is the best way to transfer a database from testing to production?
We have another systems that both testing and production are running on NON-cluster and we use backup/restore to transfer the database, can it apply in this case.
And I found that there are a tools called DTC, which can transfer all DB objects from one DB to another, is it a best way to transfer between non-cluster and cluster env.?
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Mar 3, 2006
1. Is it legal and OK to use a MSDN SQL copy on a production environment or is it strickly for test environments ??
2. If I own a legal copy of SQL 7 with 5 cals, can I legally use SQL MSDE and have more than 5 people access my SQL server or am I also limited to 5 users as my original ??
Sorry I am a newbie at this SQL thing.
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Dec 4, 2000
What is clustering?Why is it done?
Any suggestion appreciated.
Cheers!
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Sep 14, 1999
I need to cluster two NT Enterrpise Servers with SQL 7 running on them. I have been looking all over the Net for info but not much luck. I need to have some specifics. Can you help me with some good sites or books or both? I have tried Microsoft and they had some info but not much.
Please help!
thanks
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Nov 20, 2001
We are in the process of consolidating all our SQL6.5 and SQL7 databases to a single SQL 7 server - once completed we want to setup a 2 node SQL7/2000 cluster on either NT4 Enterprise or W2k Advanced Server. I would therefore appreciate any advice in choosing between the two platforms based on cost, ease of setup & configuration and ongoing reliabilty & uptime etc - we currently have no NT4 Enterprise Servers so would have to purchase these licenses anyway. Correct me if I am wrong but I also understand that setting up a cluster on NT4 Enterprise is considerabely more complicated and time consuming than on W2K Advanced Server? Any advice would be greatly appreciated..
regards
Marcfw
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Oct 13, 2005
I have a job interview and I need to know what type of questions can be asked about working in a cluster environment, I don't have much experience in clustering, can someone please give me an idea?
Thanks in advance!!
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Mar 19, 2001
Can I implement failover clustering between SQL Server 2000 & SQL Server 7.0? Or do they both need to be the same version of SQL Server.
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Feb 14, 2005
I have a question relating more to documentation and support. I'm trying to find documentation on clustering.
I remember quite some time ago I found a white paper that literally walked you through every step involved in setting up a SQL Server failover cluster. I had also found a white paper that walked you through setting up an Active/Active cluster.
I've been going through Microsoft's site, but all I've found are little bits and pieces.
If anyone can point me in the right direction, or even provide a link, etc. as to where to find some good solid documentation, that would be awesome.
Thanks!!
Anthony
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Sep 21, 2005
If i have an activepassive cluster for SQL Server, under what circumstances would it prompt to automatic changeover to the passive cluster ? Failure of the SQL Server, or let's say 1 user database out of 25 becomes suspect?
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Sep 21, 2007
Is this possible with Express Edition.
We have two servers both running SQL 2005 express. Is there anyway that any changes on one could be replicated on the other?
Thanks
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Jun 6, 2007
HiI would like to know if it's possible to make a basic SQL cluster withwindows 2003 server and SQL 2000 standard edtition. It has to be abasic cluster, I dont need it to be very quick, I can have minutes ofservers down and it's ok.In case the answer is Yes, can you recommend some links to build itup, please?Thanks in advance!!Ignacio
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Jan 7, 2008
what is clustering tell me in detail
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Mar 4, 2008
We currently have a cluster configuration that is running as failover with one shared SAN storage solution. Two servers running Windows Server 2003 Enterprise and SQL 2005 Enterprise. We have two nodes right now running in failover and we will be purchasing a third.
Everything is working now, but we would like to move to an N+1 configuration with two active nodes hosting a separate SQL instance each with one failover node. I've seen N+1 mentioned on about a dozen Microsoft websites, but I cant find any documentation on how to setup or configure this clustering method. Has anyone ever set up a configuration like this or seen any documentation on how to do it? Is it possible to run failover with three nodes, two of them being active?
Any insight would be greatly appreciated.
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Jul 20, 2006
Hi,
Where can I post issues with SQL 2005 clustering. Is there any prereq that needs to be followed before installing SQL 2005 on a windows cluster?
Thanks
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