Question

If my connection pooling is set to 10 and 100 users hit a page utilizing connection to DB at almost the same time.
Than in this case will the 90 users have to wait for connections to get free?
OR
More connections would be created for 90 users but they shall not be returned to pool?

FYI: I know connection pooling and related concepts. The query is in relation to page which generate large reports.

Answer 1

They will have to wait for a connection to be returned to the pool if the maximum of 10 has reached, see: http://msdn.microsoft.com/en-us/library/8xx3tyca.aspx

The connection pooler satisfies
requests for connections by
reallocating connections as they are
released back into the pool. If the
maximum pool size has been reached and
no usable connection is available, the
request is queued. The pooler then
tries to reclaim any connections until
the time-out is reached (the default
is 15 seconds). If the pooler cannot
satisfy the request before the
connection times out, an exception is
thrown.