TencentDB for SQL Server allows you to create databases on the Database Management page in the console and authorize accounts for database access.
Maximum number of databases created in a single instance
Note:
If the instance only has one CPU core, we recommend that you keep the database limit at 70 to guarantee instance stability.
The maximum number of databases that can be created for instances of different specifications is related to the value of the max worker threads parameter. If the parameter uses the default value of 0, the maximum number of databases that can be created for instances of different versions and specifications is 80. If the value of this parameter is set to 20000 or higher, the maximum number of databases that can be created for instances of different versions and specifications is related to the number of CPU cores of an instance. You can refer to the calculation formula below. For information on how to set the parameters, see Setting Instance Parameters.
SQL Server 2008 R2 Enterprise instances don't support lifting the database quantity limit, which is 70. The limit in other SQL Server instances is subject to the number of instance CPU cores as calculated below:
Multi-node
2017 Enterprise
2019 Enterprise
2022 Enterprise
The maximum number of databases is related to the instance CPUs. For instances with 4 or fewer CPU cores, the maximum number of databases is 80. For instances with 8 or more CPU cores, the maximum number of databases is 100.
Dual-Node (Formerly High-Availability Edition)
2012 Standard/Enterprise
2014 Standard/Enterprise
2016 Standard/Enterprise
Maximum number of databases:
Extract the square root of the CPU core quantity, round it to one decimal place, multiply the result by 40, and add the product to 80 to get the value X. The smaller value between X and 300 is the maximum number of databases. For example, you can create up to 160 databases in a 4-core 16 GB MEM SQL Server 2014 Enterprise instance.
The maximum number of databases is related to the instance CPU. The maximum number of databases for instances with 8-core CPU or less is 80, and the maximum number of databases for instances with 8-core CPU or above is 100.
Extract the square root of the CPU core quantity, round it down to the nearest integer, and multiply the result by 100 to get the value N. The smaller value between N and 400 is the maximum number of databases. For example, you can create up to 200 databases in a 4-core 16 GB MEM SQL Server 2017 Enterprise instance.
Table of instance CPU core quantity and corresponding maximum database quantity
Maximum number of databases in Basic Edition
Maximum number of databases in Dual-Server High Availability/Cluster Edition
1. Log in to the TencentDB for SQL Server console and click the ID of the target instance in the instance list or Manage in the Operation column to enter the instance management page.
2. On the instance management page, select the Database Management tab, click Create Database, set configuration items in the pop-up window, confirm that everything is correct, and click OK.
Database Name: It can contain up to 64 letters, digits, and underscores and must start with a letter.
Supported Character Set: Select the character set to be used by the database. Currently, most native character sets are supported.
Authorize Account: You can authorize existing accounts to access the database. If you haven't created an account yet, see Creating Account.
