Showing posts with label implement. Show all posts
Showing posts with label implement. Show all posts

Friday, March 30, 2012

Merge Join - Add Cross Join

Please implement a Cross Join option in SP1. Thanks.Andrew,
I asked for the same thing a long time ago. Submit it at betaplace or the product feedback centre. The more people that ask for it the more likely we are to get it.

-Jamiesql

Monday, March 12, 2012

Memory Usage Active - Active

Dear all,
i am planing to implement a Windows 2003 Cluster with MS SQl 2000
Enterprise Edition. I have 2 Nodes (4 * XEON MP Processors) with 8 GB
RAM per Node.
I have the need for 6 SQL instances and would like to implement a
active-active cluster. What do you think it the best way to configure
the memory for the Servers ?
I would like to run 3 instanced per Node but can i allocate 7 GB per
Node for SQL (and 1 for the Operating System) ?
What is happening then i one server fails ?
Should i plan to allocate only 3 GB per Server for SQL to make sure
that one server can handle the load for all instances if one server
fails ?
Should i use the /AWE switch only in the boot.ini to allow more than 4
GB Memory ?
or should i use the /3 GB switch as well ?
Maybe somebody can give me a hint.
Best regards,
Walter
Answers inline...
Cheers,
Rod
MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering
http://www.msmvps.com/clustering - Blog
"Walter" <2oznet@.gmx.de> wrote in message
news:58bb24fd.0412172354.505a3c4a@.posting.google.c om...
> Dear all,
> i am planing to implement a Windows 2003 Cluster with MS SQl 2000
> Enterprise Edition. I have 2 Nodes (4 * XEON MP Processors) with 8 GB
> RAM per Node.
> I have the need for 6 SQL instances and would like to implement a
> active-active cluster. What do you think it the best way to configure
> the memory for the Servers ?
Which instances need the most RAM? That is a lot of instance for only two
machines.

> I would like to run 3 instanced per Node but can i allocate 7 GB per
> Node for SQL (and 1 for the Operating System) ?
Again, what are the database/instance requirements.

> What is happening then i one server fails ?
>
You will then failover and have one heck of busy server!!! All 6 instances
will run, but I bet a lot slower.

> Should i plan to allocate only 3 GB per Server for SQL to make sure
> that one server can handle the load for all instances if one server
> fails ?
Can your applications handle that config? That is not a lot of memory for 3
copies of SQL to run under. Not a lot by any stretch.

> Should i use the /AWE switch only in the boot.ini to allow more than 4
> GB Memory ?
Does your hardware support /AWE? If so, yes.

> or should i use the /3 GB switch as well ?
Yes!

> Maybe somebody can give me a hint.
I would love to know your business factors that requir 6 instances of SQL.

> Best regards,
> Walter
|||There might be some dev/test cases where eveyrone wants to have the sysadmin
access to the SQL instance. It then may make sense to give each a separate
instance with the sysadmin rights to keep them isolated from each other. But
I agree you really need to think hard whether there is sufficient rationale
for having six SQL instances in a two-node cluster with 4-way servers.
Linchi
"Rodney R. Fournier [MVP]" <rod@.die.spam.die.nw-america.com> wrote in
message news:usaAppQ5EHA.3472@.TK2MSFTNGP09.phx.gbl...
> Answers inline...
> Cheers,
> Rod
> MVP - Windows Server - Clustering
> http://www.nw-america.com - Clustering
> http://www.msmvps.com/clustering - Blog
> "Walter" <2oznet@.gmx.de> wrote in message
> news:58bb24fd.0412172354.505a3c4a@.posting.google.c om...
> Which instances need the most RAM? That is a lot of instance for only two
> machines.
>
> Again, what are the database/instance requirements.
>
> You will then failover and have one heck of busy server!!! All 6 instances
> will run, but I bet a lot slower.
>
> Can your applications handle that config? That is not a lot of memory for
> 3 copies of SQL to run under. Not a lot by any stretch.
>
> Does your hardware support /AWE? If so, yes.
>
> Yes!
>
> I would love to know your business factors that requir 6 instances of SQL.
>
>