Monthly Archives: September 2015

Have Databases become a glorified versions of EXCEL?

Recently I was having a discussion about how coding and design patterns have changed in RDMBS and if we can still call it RDBMS anymore. Very early in my career while attending an interview I was asked what a relational database is, my answer was “anything that stored data in a row and column format… Read More »

Video on Performance tuning memory allocation and spill issues

I was inspired by a recent article I read on parameter sniffing to add my own contribution to the topic, I explain how tempdb spools occur due to poor memory grants and they impact of parameter values in determining how much resources are allocated. I then go on to cover two different ways that the… Read More »

VM and IP Configurations

Recently there was a post on DB mirroring not working on a VM, in the post I had suggested checking the network connectivity and NIC configurations in the VM software since there are different ways that the VM software assigns IP to the Virtual devices. For the purpose of this post I am using VMware… Read More »

Suspect MSDB and no Backups

Yesterday I got a call from a client about MSDB being suspect after a drive failure. Unfortunately the client didn’t have any backups. Now the correct and best option is to use a backup and restore the database. This way you don’t lose any of the jobs and other configurations that you may have set… Read More »

The History of War Analyzed

War is an ugly topic, but I wanted to know if we have learnt anything from history and so I downloaded the data for all the wars since 1900 till date to get an understanding of how things have changed. The below chart shows the duration in years on the x axis and the count… Read More »

Combining Results from multiple datasets in SSRS – performance comparison

Recently at a training I was asked how to combine the results from two different datasets, while I have used this function before I couldn’t recollect how much of a performance difference it made to look up within SSRS vs performing the join directly with the dataset query. In this blog I try to find… Read More »