ORPHAN_TIMEOUT - The number of seconds that an application is allowed to hold an
inactive connection. The default is 1800 seconds (30 minutes). Any non-negative integer
is a valid value. If there is no activity on an allocated connection for longer than the
ORPHAN_TIMEOUT number of seconds, the connection is marked for orphaning. After
another ORPHAN_TIMEOUT number of seconds, if the connection still has no activity,
the connection is returned to the pool. If the application tries to use the connection again,
it is thrown a StaleConnectionException. Connections that are enlisted in a transaction
are not orphaned. Setting this value to 0 disables the orphan timeout.
JARClassLoader. There is one instance of it for each application server accessible through the EJBJARManager.