Azure SQL database is the modern cloud based relational database service to power wide variety of applications including mission critical, resource intensive and the latest generative AI applications. Azure SQL database provides industry leading availability SLA of 99.99%. We know customers want to monitor availability of critical Azure services like Azure SQL database in granular, consistent way and in near real time with high quality data. 

We are excited to announce Public Preview of Availability portal metric enabling you to monitor SLA compliant availability. This Azure monitor metric is emitted at 1-minute frequency and has up to 93 days of history. Typically, the latency to display availability is less than three minutes. You can visualize the metric in Azure monitor and set up alerts too. 

Availability is determined based on the database being operational for connections. A minute is considered as downtime or unavailable if all continuous attempts by users to establish connection to the database within the minute fail due to a service issue. If there is intermittent unavailability, the duration of continuous unavailability must cross the minute boundary to be considered as downtime. 

Availability metric data is applicable for a database in DTU or vCore purchasing model and in all the service tiers (Basic, Standard, Premium, General Purpose, Business Critical & Hyperscale). Both singleton and elastic pool deployments are supported. You can monitor the metric by adding Availability metric in portal as shown below:

For comprehensive details on Availability metric like the logic used for computing availability please refer to documentation. To learn more of Azure SQL database Service Level Agreements (SLA) refer to SLA. 

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