Gartner Case study: Community Connect use of Oracle, PHP, Database Resident Connection Pool, etc

"CCI has been collaborating with Oracle's development group to improve memory utilization and reduce overhead across multiple nodes of DBMSs, using connection pooling called Oracle Database Resident Connection Pooling (DRCP). A connection pool is a cache of database connections maintained by the database so that the connections can be reused when the database receives future requests for data. Opening and maintaining a database connection for each user can be time consuming and waste resources. Open connections are placed in a pool to be reused."

http://mediaproducts.gartner.com/reprints/oracle/article60/article60.html