How Clustering Works?

Mar 5, 2007

Hi,

I am having data like this

Studid Date Perf

001 01/01/2008 90

001 02/01/2008 89

001 03/02/2008 91

002 01/01/2008 75

002 02/01/2008 79

002 03/02/2008 69

I gave Perf as PREDICT. When I use the

"SELECT * FROM [Cluster_Model]"

Query I am getting

Perf

82.

Can anyone help me how clustering works? and how to write a Query to group the values here based on StudId?

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Transfer A Database From Non-clustering To Clustering Env.

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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SQL SERVER ACCESS DENIED!! BUT Everything Works On MSDE And Works SHOWING RECORDS ON SQL SERVER!! PLEASE HELP

Jul 26, 2004

I've got a popular problem so i get a message that server acces denied! ..

But that what is different in my error.... When i use same setting same database and connection string (on MSDE server) there is no problem...

On SQL server i have got windwos authentication but i added all accounts as ASPNET and SA.... and when i try to connect by

RETTO - name of my server

server=RETTO;uid=sa;pwd=password;database=db1;
or by
Integrated Security=SSPIserver=RETTO;uid=RETTOASPNET;database=db1;

I CAN BROWSE RECORDS THERE ARE NO PROBLEMS WITH CONNECTION!!! but when i try to update or iinsert or delete something in database there becomame this error that access denied or server does not exist!!!

PLEASE HELP I'm FIGHTING WITH THAT FOR OVER 5 DAYS!!!

I MADE FOR MY ACCOUNTS (SA, ASPNET) ALL THINGS ALLOWED AS EXECUTING stored procedures.. OR ACCESING datatables with insert delete and update query WHERE IS THE PROBLEM!!!??

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Jun 20, 2007

I'm having a strange problem with this but I know (and admit) that the problem is on my PC and nowhere else. My firewall was causing a problem because I was unable to PING the database server, switching this off gets a successful PING immediately. The most useful utility to date is running netstat -an in the command window. This illustrates all the connections that are live and ports that are being listed to. I can establish a connection both by running

telnet sql5.hostinguk.net 1433 and

sqlcmd -S sql5.hostinguk.net -U username -P password

See below:

Active Connections

Proto Local Address Foreign Address State

TCP 0.0.0.0:25 0.0.0.0:0 LISTENING

TCP 0.0.0.0:80 0.0.0.0:0 LISTENING

TCP 0.0.0.0:135 0.0.0.0:0 LISTENING

TCP 0.0.0.0:443 0.0.0.0:0 LISTENING

TCP 0.0.0.0:445 0.0.0.0:0 LISTENING

TCP 0.0.0.0:1026 0.0.0.0:0 LISTENING

TCP 0.0.0.0:1433 0.0.0.0:0 LISTENING

TCP 81.105.102.47:1134 217.194.210.169:1433 ESTABLISHED

TCP 81.105.102.47:1135 217.194.210.169:1433 ESTABLISHED

TCP 127.0.0.1:1031 0.0.0.0:0 LISTENING

TCP 127.0.0.1:5354 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51114 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51201 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51202 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51203 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51204 0.0.0.0:0 LISTENING

TCP 127.0.0.1:51206 0.0.0.0:0 LISTENING

UDP 0.0.0.0:445 *:*

UDP 0.0.0.0:500 *:*

UDP 0.0.0.0:1025 *:*

UDP 0.0.0.0:1030 *:*

UDP 0.0.0.0:3456 *:*

UDP 0.0.0.0:4500 *:*

UDP 81.105.102.47:123 *:*

UDP 81.105.102.47:1900 *:*

UDP 81.105.102.47:5353 *:*

UDP 127.0.0.1:123 *:*

UDP 127.0.0.1:1086 *:*

UDP 127.0.0.1:1900 *:*

Both these utilities show as establishing a connection in netstat so I am able to connect the database server every time, this worked throughout yesterday and has continued this morning.

The problem is when I attempt to use SQL Server Management Studio. When I attempt to connect to tcp:sql5.hostinguk.net, 1433 nothing shows in netstat at all. There is an option to encrypt the connection in the connection properties tab in management studio, when I enable this I do get an entry in netstat -an, see below:

TCP 81.105.102.47:1138 217.194.210.169:1433 TIME_WAIT

TCP 81.105.102.47:1139 217.194.210.169:1433 TIME_WAIT

TCP 81.105.102.47:1140 217.194.210.169:1433 TIME_WAIT

Amost as if it's trying the different ports but you get this time_wait thing. The error message is more meaningful and hopefull because I get:

A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.) (.Net SqlClient Data Provider)

I would expect this as the DNS has not been advised to encrypt the conection.

This is much better than the : Login failed for user 'COX10289'. (.Net SqlClient Data Provider) that I get, irrespective of whether I enter a password or not.

This is on a XP machine trying to connect to the remote webhosting company via the internet.

I can ping the server

I have enabled shared memory and tcp/ip in protocols, named pipes and via are disabled

I do not have any aliases set up

No I do not force encryption

I wonder if you have any further suggestions to this problem?

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Sep 26, 2006

I use the code below for updating data from a AS400 Liked server. I dont understend how the WHERE NOT EXISTS( sections work however usualy they do, in this case it does not andt I can't seem to find out why.

Does anyone see the error?

Thanks

--=========================================
--Create a local temporary table that hold
--all the data from the source table
--=========================================

SELECT * INTO #TEMP FROM dbo.LINK_LTTSTOC

--=========================================
--Remove table entries that are no longer
--needed or that have to be updated
--=========================================

DELETE FROM LTTSTOCK

WHERE NOT EXISTS( SELECT * FROM #TEMP

WHERE LTTSTOCK.WarehouseNo = LTWHLO

AND LTTSTOCK.Location = LTWHSL

AND LTTSTOCK.ItemNo = LTITNO

AND LTTSTOCK.NumberAvail = LTAVAL

)

--=========================================

--Insert data that is missing or that

--needed to be updated and was previously

--deleted

--=========================================

INSERT INTO dbo.LTTSTOCK(WarehouseNo,Location,ItemNo,NumberAvail,rowguid)

SELECT DISTINCT LTWHLO,LTWHSL,LTITNO,LTAVAL, NEWID()

FROM #TEMP

WHERE NOT EXISTS( SELECT * FROM LTTSTOCK

WHERE WarehouseNo = LTWHLO

AND Location = LTWHSL

AND ItemNo = LTITNO

AND NumberAvail = LTAVAL

)

--========================================

--Remove local temporary table.

--========================================

DROP TABLE #TEMP

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regards
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