Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 

James Serra's Blog

James is a big data and data warehousing technology specialist at Microsoft. He is a thought leader in the use and application of Big Data technologies, including MPP solutions involving hybrid technologies of relational data, Hadoop, and private and public cloud. Previously he was an independent consultant working as a Data Warehouse/Business Intelligence architect and developer. He is a prior SQL Server MVP with over 30 years of IT experience. James is a popular blogger (JamesSerra.com) and speaker, having presented at dozens of PASS events including the PASS Business Analytics conference and the PASS Summit. He is the author of the book “Reporting with Microsoft SQL Server 2012”. He received a Bachelor of Science degree in Computer Engineering from the University of Nevada-Las Vegas.

Archives: May 2012

Syncing your calendars

I have a desktop computer, a laptop, and a iPhone.  I frequently add meetings to my Outlook calender on my desktop computer, but sometimes enter them on my laptop.  And I frequently use my iPhone to alert me about upcoming meetings.  These leads to a major problem in keeping all… Read more

2 comments, 1,318 reads

Posted in James Serra's Blog on 30 May 2012

Columnstore indexes and memory

Columnstore indexes are built and processed completely in memory.  You will receive an out-of-memory error if you do not have enough memory to build the columnstore index.  Column store processing is optimized for in-memory processing, however, they do not reside in memory after they are created.  The index data is… Read more

1 comments, 955 reads

Posted in James Serra's Blog on 23 May 2012

What happens when a SSAS Tabular model exceeds memory?

If you are using the Tabular model in SSAS, it will use the xVelocity technology to load your entire database in memory (greatly compressing the database).  So what happens if your database is too big to fit in memory?  You will get this error when you process the model:

“The… Read more

1 comments, 2,826 reads

Posted in James Serra's Blog on 21 May 2012

Being careful in SSAS to not make a cube/dimension unprocessed

A big headache in SSAS, especially when dealing with a large cube, is making a change that when deployed, causes a cube to become unprocessed, forcing you to do a full process so the cube is usable.  Nothing is worse than making a change without realizing it will cause the… Read more

1 comments, 2,489 reads

Posted in James Serra's Blog on 16 May 2012

Data Warehouse vs Data Mart

I see a lot of confusion on what exactly is the difference between a data warehouse and a data mart.  The best definition that I have heard of a data warehouse is:

“A relational database schema which stores historical data and metadata from an operational system or systems, in… Read more

5 comments, 20,852 reads

Posted in James Serra's Blog on 14 May 2012

Fast Track Data Warehouse Reference Guide for SQL Server 2012

I have previously blogged about Fast Track Data Warehouse, a reference configuration optimized for data warehousing (see Microsoft SQL Server Reference Architecture and Appliances).  That was version 3.0 of the reference configuration that was for SQL Server 2008 R2.  Just released is version 4.0 for SQL Server 2012 ( Read more

0 comments, 2,111 reads

Posted in James Serra's Blog on 2 May 2012