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An Azure SQL database is a managed database in Microsoft Azure that is created within an Azure resource group with a defined set of compute and storage resources for different workloads. An Azure SQL database is associated with an Azure SQL Database logical server, which is created within a specific Azure region. A logical server acts as a central administrative point for multiple databases, including SQL elastic pools logins, firewall rules, auditing rules, threat detection policies, and failover groups. A logical server can be in a different region than its resource group. The logical server must exist before you can create the Azure SQL database. All databases on a server are created within the same region as the logical server.

A logical server is a parent resource for databases, elastic pools, and data warehouses. It also provides the scope for database quota and DTU quota for the resources it contains (such as 45,000 DTU) and therefore is a high-order element of the identity of databases, elastic pools, and data warehouses for Azure resource management purposes. If the Azure logical server is not ready, then the Azure databases associated with the logical server and the resource group may not be accessible causing inconvenience to the users accessing the resources from such resource groups. Therefore, it is necessary to periodically monitor the state of the Azure logical server. The AzrDBServerTest test helps you in this regard!

For each Azure SQL Database logical server being monitored, this test reports the current state of the server and the number of Azure SQL databases associated with the logical server. In addition, this test reports the number of Database Transaction Units allocated to the SQL databases associated with the logical server and the maximum number of DTUs that can be allocated to the SQL databases.

Outputs of the test : One set of results for each Subscription ID: Resource Group: Azure SQL Database logical server of the target Microsoft Azure being monitored.

Measurement

Description

Measurement Unit

Interpretation

Db_state

Indicates the current status of this Azure SQL Database logical server.

The values reported by this measure and its numeric equivalents are mentioned in the table below:

Measure Value	Numeric Value
Unknown	0
Ready	1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of this database instance. The graph of this measure however, represents the status of a server using the numeric equivalents only - 0 or 1.

The detailed diagnosis of this measure if enabled, lists the location of the database instance, the version of the SQL installed and the Fully Qualified Domain Name of the server.

Number_of_db

Indicates the number of databases instances associated with this Azure SQL Database logical server.

Number

The detailed diagnosis of this measure lists the name of the database instances created on the database server.

Current_dtus

Indicates the number of Database Transaction Units allocated to the database instances associated with this Azure SQL Database logical server.

Number

For a single Azure SQL database at a specific performance level within a service tier, Microsoft guarantees a certain level of resources for that database (independent of any other database in the Azure cloud) and providing a predictable level of performance. This amount of resources is calculated as a number of Database Transaction Units or DTUs, and is a blended measure of CPU, memory, I/O (data and transaction log I/O).

Max_dtus

Indicates the maximum number of Database Transactions Units that can be allocated to the database instances associated with this Azure SQL Database logical server.

Number