Many Jakarta projects support interaction with a relational database. -Creating a new connection for each user can be time consuming (often -requiring multiple seconds of clock time), in order to perform a database -transaction that might take milliseconds. Opening a connection per user -can be unfeasible in a publicly-hosted Internet application where the -number of simultaneous users can be very large. Accordingly, developers -often wish to share a "pool" of open connections between all of the -application's current users. The number of users actually performing -a request at any given time is usually a very small percentage of the -total number of active users, and during request processing is the only -time that a database connection is required. The application itself logs -into the DBMS, and handles any user account issues internally.- -
There are several Database Connection Pools already available, both -within Jakarta products and elsewhere. This Commons package provides an -opportunity to coordinate the efforts required to create and maintain an -efficient, feature-rich package under the ASF license.- -
commons-dbcp package relies on code in the
commons-pool package to provide the underlying object pool
-mechanisms that it utilizes.
Please see http://jakarta.apache.org/commons/dbcp/.
-JavaDoc API documents are available online. In particular, you should
-read the package overview of the