OLAP Performance

Mar 28, 2006

Just to verify that I'm not insane:

Does Reporting Services have SERIOUS problems performance wise with OLAP data? Reports running directly against our relational datawarehouse run FASTER than reports going against the OLAP cubes. How can this be?

<rant>

At first i thought i was just missing something but the "upgrades" to reporting service have been a HUGE dissapointment, at least in the OLAP field:


- They STILL flatten the result set. How can this be after FIVE years??? After all the hype about UDM and improved integration with analysis services they STILL do this???

- Report builder: Has anyone seen a worse implementation of a reporting tool? Report models?? What about the UDM thats supposed to bridge the gap between analysis and reporting? Integration with SSAS? What integration? If anyone is using this for anything serious (and im not talking tech demos) i would like to know.

Is this what Microsoft defines as "Enterprise Reporting"?

</rant>



.. phew.. needed to get that off my chest.

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BIG Performance Problems With OLAP

Mar 17, 2001

I've created a data mart on a SQL Server 7.0 database containing 1 fact table and 6 dimension tables. I then created an OLAP cube based off this table. I used the MOLAP format and created over 900 aggregations until the performance measure got to be about 15%. It took about 45 minutes for the OLAP manager to get to that point.

The size of the actual data isn't that big. The fact table has about 500,000 records in it and the other tables have at the most 1000 records. The SQL Server and OLAP server both run on the same box and have a gigabyte of RAM installed. I believe I have thoroughly indexed the tables.

Here's the problem. I try to access the cube through Office 2000's web pivot table control and it connects just fine. As soon as I add more than 3 dimensions and 1 measure, though, performance goes down to almost nothing. My computer (and other computers in the company) just crawl. It takes about 20 minutes for the control to refresh after you add a 4th dimension. I tried accessing the cube through Excel 2000 and it completely crashes after I add the 4 dimension. I can query the tables directly from SQL and the results are returned incredibly fast.

I've got to be missing something here. Any suggestions? Any help will be greatly appreciated!

Thanks,

Brian Moss

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Sep 6, 2007

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laptop completely out performs the expensive hardware by around 45% quicker. Both when the configuration is identical or when we ramp up the processes on the expensive hardware it still performs miserably compared to the laptop. Perfmon counters or Profiler don't so much difference when comparing the server and laptop.

Does anyone know why the laptop completely outstrips the expensive top end hardware perfmance wise although the configuration profile is identical?

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OLAP Services: Automating Archival/Restore Of OLAP Databases

Sep 19, 2000

Hello All,

Our OLAP environment involves an ETL/Data Warehouse/Data Mart server and a cube publisher server.
We would like to learn how to automate the Archival/Restore of OLAP databases. We are currently doing
it manually though OLAP Manager. Any help would be appreciated. Thanks. James.

--
James E. Bothamley
Senior Database Administrator
Dave & Buster's, Inc.
2481 Manana
Dallas, TX 75220

Work
Phone (214) 904-2296
email jbothaml@DaveAndBusters.Com

"Once in a while you can get shown the light
in the strangest of places if you look at it right"

JG 1942-1995 RIP

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Hi,


I am looking at deploying an ASP.NET site which accesses an OLAP database - Microsoft Analysis Services


My question is how is this normally done:



Straight SQL / Stored Procedures

3rd party Adhoc plugin

Anything else



If there is anyone out there with experience in using ASP.NET and
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Database Architecture
System Architecture



and any
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Thanks in Advance

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