Yes, it’s possible that SQL Server can raise false and misleading error. I was trying to do some pretty straight forward stuff – import data from text file to SQL table using the BULK INSERT command of T-SQL. Let us learn about false errors of Operating system error code 5 (Access is denied.)
Database Sharding – How to Identify a Shard Key?
I have written a number of posts in the past working on shared databases and the concepts around these can be read at Sharding or No Sharding of Database – Working on my Weekend Project for the starters point of view. In a recent discussion at a user group, I had someone ask me what is the rationale around building a sharding key and what should be used for sharding their database. The concept, though common, it is not in black-and-white to what should be used as an sharding key. There are guiding principles which can be applied. Let us learn about Database Sharding.
PowerShell – SQL Server Paging of Memory Identification
In one of my recent consultation visits to a customer, there was deep performance related problems. They were unclear to what was happening and what was the actual problem. But these are some of the challenges that I love to take head-on too. In this quest to learn what the problem would be, I used a number of tools and during that time I figured out it was a memory pressure that was creating the problem. Let us learn about SQL Server Paging of Memory Identification.
SQL SERVER – A Timeout (30000 milliseconds) was Reached While Waiting for a Transaction Response from the MSSQLSERVER
Recently I was contacted by a client who reported very strange error in the SQL Server machine. These consulting engagements sometimes get the best out of you when it comes to troubleshooting. They reported that they see timeout error. My question was whether it connection timeout or query timeout which I explained in this blog post?
How to Drop Clustered Index on Primary Key Column? – Interview Question of the Week #084
Question: How to drop clustered index, which is created on primary key?
Answer: If you thought the answer as simple as following script, you are wrong.
DROP INDEX PK_Table1_Col1
ON Table1
GO
SQL SERVER – Installation Fails With Error – A Constraint Violation Occurred
In my recent past, I have helped around 10 customers who have had similar problems while installing SQL Server Cluster on windows. So I thought it would be a nice idea to pen it down as a blog post so that it can help others in future. In this blog post we will discuss about Installation Fails With Error – A Constraint Violation Occurred.
SQL SERVER – Creating a Copy of Database in Azure SQL DB
Recently I was about to undertake an interesting assignment for one of my clients who pinged me for Performance Tuning exercise. Since this is something I have been doing full time in the past couple of months, I got into the call immediately. Lesser did I know what I was about to get into actually. Since the problem was about SQL Server query performance, I thought it would be the usual routine. Let us learn about how to create a copy of the database in Azure SQL DB.