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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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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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!!!


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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 *:*

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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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--=========================================
--Create a local temporary table that hold
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--=========================================

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

DELETE FROM LTTSTOCK

WHERE NOT EXISTS( SELECT * FROM #TEMP

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AND LTTSTOCK.ItemNo = LTITNO

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)

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

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)

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

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