The number of databases that can be created in a single instance of TencentDB for SQL Server depends on the specific version and configuration of the instance.
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TencentDB for SQL Server Standard Edition:
- There is no hard limit on the number of databases, but performance may degrade if too many databases are created on a single instance due to resource contention (CPU, memory, I/O).
- Example: A small instance with 4 vCPUs and 8GB RAM may comfortably support 10-20 databases, while a larger instance with 16 vCPUs and 64GB RAM could handle 50+ databases, depending on workload.
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TencentDB for SQL Server Enterprise Edition:
- Similar to the Standard Edition, there is no strict database count limit, but performance optimization is critical.
- Example: A high-performance instance with 32 vCPUs and 128GB RAM can support dozens of databases, especially if workloads are well-distributed.
For production environments, Tencent Cloud recommends monitoring resource usage (CPU, memory, disk I/O) and scaling the instance vertically (upgrading specifications) or horizontally (sharding databases) if needed. TencentDB for SQL Server also provides automated performance tuning and resource monitoring to help manage multiple databases efficiently.