从.NET SQL连接最大？

Question

Using .NET running in an Azure cloud service, with a process with many SQL Server connection strings (SQL authentication, not Windows), what is the maximum number of connections that can be made to different databases?

I am putting together a system that needs to read/write to many MSSQL instances on different hosts at the same time and am looking to gather information/documentation on limits. This is not the same as multiple connections going to the same database, this is for example 40 strings (therefore 40 connection pools) to 40 different databases under different security contexts.

Thanks.

Answer 1

Maximum Capacity Specifications for SQL Server

User connections: 32767

You see also Maximum number of concurrent users connected to SQL Server 2008

For you question (num max connections pools), I view the code of ADO.NET and I found that the pools are stored ( _poolCollection) in a ConcurrentDictionary then the number max of pool is the the number max of entry in the dictionary. In the documentation says

For very large ConcurrentDictionary objects, you can increase the maximum array size to 2 gigabytes (GB) on a 64-bit system by setting the configuration element to true in the run-time environment.

I think that there aren't real limits, depends on the machine