SQL SERVER – Unable to bring resource online. Error – Data source name not found and no default driver specified

One of my blog readers reported a strange issue to me. As per the issue described, they were unable to bring SQL Server resource in cluster online, only on one node of the cluster. I always use for error messages, but they said that SQL resource goes to online pending state and after some time, it goes to failed state. Let us learn how to fix the error where data source name not found.

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Cloud Consulting Pre-Engagement Questionnaire – A Bookmark

The cloud phenomenon is no more a dream for many, but a reality for several customers I have been working with. Many of my customers are looking for guidance and from time to time I get an opportunity to have some deep constructive discussions. These discussions can range from should I be going to cloud or not, is this app cloud ready, can we do a lift-shift of this application directly to some cloud player etc. Though each of these discussions lead from one point to another, there is a lot of profiling I do with customers. In this blog, I want to talk about a conversation I had with one of my customers who was evaluating cloud for one of his applications. Let us see a Cloud Consulting Pre-Engagement Questionnaire.

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SQL SERVER – Fix Error Msg 10794, Level 16 – The operation ‘CREATE INDEX’ is not supported with memory optimized tables.

Whenever I write something as a new concept, I do see people reading the blog do give it a try. Many a times I get queries that the script didn’t work for them after they learnt the concepts about memory optimized tables. The blog I wrote on how In Memory OLTP was supporting ColumnStore – read it: SQL SERVER – Creating Clustered ColumnStore with InMemory OLTP Tables

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SQL SERVER – Unable to Attach Database – File Activation Failure – The Log Cannot be Rebuilt

Once I was in a situation where there was a disaster faced by my client. They lost the drive which was having transaction log file. Since they did not have effective monitoring, they realized that the backup jobs were failing. So essentially they only have MDF files for user databases and they were left with option to rebuild the log. Let us learn about how file activation failure can create an interesting error.

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SQL SERVER – Creating Clustered ColumnStore with InMemory OLTP Tables

When SQL Server 2016 was released, there were a number of enhancements that were discussed around how InMemory OLTP removed which were as limitations. I personally saw some real boot to some of the capabilities coming into InMemory OLTP especially around the concept called as Operational Analytics that Microsoft calls in this release. I am going to talk about this concept in my SQLPass session later this month in October but here is a teaser for what I learnt from this concept.

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