Definition Data warehouse snapshot A data warehouse snapshot creates a restore point you can leverage to recover or copy your data warehouse to a previous state. Since a dedicated SQL pool is a distributed system, a data warehouse snapshot consists of many files that are located in Azure storage. Snapshots capture incremental changes from the data stored […]
The auto-failover groups feature for the Azure SQL database can be configured with an automatic failover policy. Azure triggers failover after the failure is detected and the grace period has expired. Grace period is determined by a setting called ‘GracePeriodWithDataLossHours’ that cannot be set under one hour. Why is it not allowed to set a […]
Introduced in SQL Server 2016 (13.x) SP1 and Azure SQL Database is the USE HINT option. At the time of writing this article, there are 23 of those. You can see an up to date list by running Dynamic Management View sys.dm_exec_valid_use_hints. With the introduction of this feature, we can replace some of the trace […]
The ‘Always On Availability Group’ feature is a high-availability and disaster-recovery solution. Since the launch with SQL Server 2012, data professionals have adopted this solution widely. Before implementing ‘Always On Availability Group’, data professionals need to make decisions about availability and failover mode. These decisions will involve discussion with business owners of the applications that […]
In this blog post, I discussed some facts about Azure SQL Database Serverless. If someone wants to avoid those limitations and disable ‘Auto-pause,’ how costly is it? Suppose a serverless database is not paused and configured with 4 max vCores and 0.5 min vCores corresponding to 2.1 GB min memory. Then the minimum compute bill […]
