title: How many open connections can a database server have at a time?
body: <p>Hello I am trying to under database resident connection pooling with Oracle 11g. Now one question I have on my mind is, if I have a 1 database server on the backend. How many concurrent requests can my database server handle at a given moment, would it be one or would it be more than one at the same  time. </p>
  
  <p>To para-phrase my question, if Client1 requests a select query of say top 100 results, and Client2 requests a select of something else, does the server handle both at the same moment, or finishes the first request that it received and then attends the next request??</p>