"The connection wait timeout specifies how long an application request waits to obtain a connection if there are no longer any connections in the pool. A connection pool runs out of connections if all connections in the pool are being used (borrowed) and if the pool size has reached it's maximum connection capacity as specified by the maximum pool size property. The request receives an SQL exception if the timeout value is reached. The application can then retry getting a connection. This timeout feature improves overall application usability by minimizing the amount of time an application is blocked and provides the ability to implement a graceful recovery."