Datamining concepts

What does cluster represent? Does anyone know any good resources for datamining

with ssas 2k5? I tried BOL but, I found out they don't seem to help that much Except to make you understand what each tab does.. any suggestions?

thanks,

Rok

Here baseline info about the Cluster Algorithm in SQL Server 2005:

(The Microsoft Clustering algorithm is a segmentation algorithm provided by Microsoft SQL Server 2005 Analysis Services (SSAS). The algorithm uses iterative techniques to group cases in a dataset into clusters that contain similar characteristics. These groupings are useful for exploring data, identifying anomalies in the data, and creating predictions.)

The first link below scroll to the end you will see all the SQL Server 2005 datamining Algorithms, the second is where you will find tutorials and the last link is the math used to create most prediction related calculations. Hope this helps.

http://msdn2.microsoft.com/en-us/library/ms175595.aspx

http://www.sqlserverdatamining.com/DMCommunity/

http://mathworld.wolfram.com/topics/ProbabilityandStatistics.html

Databases on different storage

I am newbie in SQL server and have one, maybe dumb question.
I have SQL2000 cluster on Windows 2003 with shared storage on SAN.
Cluster operates with one database only.
I need to temporary attach second database to SQL server, but problem is
that I do not have enought free space on shared storage to place both
databases. It is possible to attach another database in cluster
environment from local one node drive ? No fail-over needed. Problem is
that SQL server in cluster see only shared drives. It should look like
one database in cluster environment and one in not.
Maybe with two instances or virtual servers ?
Thanx.
Short answer is no.
Longer explanation is that in a cluster, all SQL data files must be on a
cluster disk resource that the SQL server is dependant on. YOu cannot use
local storage in a SQL 2000 cluster implementation.
Geoff N. Hiten
Microsoft SQL Server MVP
Senior Database Administrator
Careerbuilder.com
I support the Professional Association for SQL Server
www.sqlpass.org
"zycha" <zycha@.NOT_FOR_SPAM.COM> wrote in message
news:OnDuY9v8EHA.2196@.TK2MSFTNGP11.phx.gbl...
> I am newbie in SQL server and have one, maybe dumb question.
> I have SQL2000 cluster on Windows 2003 with shared storage on SAN.
> Cluster operates with one database only.
> I need to temporary attach second database to SQL server, but problem is
> that I do not have enought free space on shared storage to place both
> databases. It is possible to attach another database in cluster
> environment from local one node drive ? No fail-over needed. Problem is
> that SQL server in cluster see only shared drives. It should look like
> one database in cluster environment and one in not.
> Maybe with two instances or virtual servers ?
> Thanx.
|||Hello.
It may be possible to use a mount point. I've done this with two shared physical disk resources that were in the same resource group. That is: I created a folder in a formatted partition on physical disk 1 (let's call it "I:\NDF") and mounted a formatted partition from physical disk 2 on I:\NDF.
I was able to create SQL server data files on the mounted volume, even though the physical disk resource (2) was not in the SQL server resource dependancy list. Apparently SQL server doesn't know that the filesystem has a mount point, but why would it care?
Now, I'm not sure if it will work with a "local" disk, but you may try if you are feeling adventurous. Also, this was on Win2KAS, not 2.003K
Interestingly, and despite warnings against doing this (warnings which I did not read until after it had been operational in a production environment for months), the SQL server worked fine and even went through failovers without a hitch.
It will definitely not survive a failover if you use a local disk, however.
Anyway, I would not normally "suggest" doing this, because it is not supported, but it may be a viable option if you just need a few rows out of a table somewhere.
Goog Luck
jg|||Geoff N. Hiten wrote:
> Short answer is no.
> Longer explanation is that in a cluster, all SQL data files must be on a
> cluster disk resource that the SQL server is dependant on. YOu cannot use
> local storage in a SQL 2000 cluster implementation.
>
thanx

Database wont start in cluster - cannot generate SSPI context

Hi,
I have a MSSQL database running in a Microsoft cluster. I was working on troubleshooting for another SAP problem when they suggested I change the setting using hte SQL Server Client Network Utility to 'named pipes' from 'tcp/ip'. Every since, despite changing it back I'm unable to start the database in the cluster.

I'm kind of a newbie at this so I'd really appreciate any help in getting this database up and running.

Here is the error message from the event log:
sqsrvres] checkODBCConnectError: sqlstate = HY000; native error = 0; message = [Microsoft][ODBC SQL Server Driver]Cannot generate SSPI contexthttp://www.sqlservercentral.com/columnists/cmiller/cannotgeneratesspicontext.asp
http://support.microsoft.com/?id=811889
and
http://blogs.msdn.com/sql_protocols/archive/2005/10/19/482782.aspx|||Hi,
Thanks for your help. The solution was to change the /etc/hosts 127.0.0.1 to the SQL Server instance name. Everything is up and running now.
The line in my /etc/hosts used to read:
127.0.0.1 localhost
Now it reads:
127.0.0.1 <instance name>
#127.0.0.1 localhost
Regards,
Jeff