Microsoft SQL Server database ranks third in the relational database, second only to Oracle and MySQL database. when using it, it is inevitable to encounter various problems and warnnings. You may be dba or a developer, I hope this content can help you solve SQL Server error number 17809.

Error number: 17809

Severity level: 20

Event logged: Could not connect because the maximum number of ‘%ld’ user connections has already been reached. The system administrator can use sp_configure to increase the maximum value. The connection has been closed.%.*ls