If a second instance of
attempts to boot an
already running database, the following error messages appear:
ERROR XJ040: Failed to start database 'firstdb', see the next exception
for details.
ERROR XSDB6: Another instance of Derby may have already booted the
database /home/myself/DERBYTUTOR/firstdb.
In addition, a stack trace appears in the derby.log file.
If you need to access a single database from more than one
Java Virtual Machine (JVM), you will need to put a server solution in place. You
can allow applications from multiple JVMs that need to access that database to
connect to the server. The
Network Server is
provided as a server solution. For basic information on starting and using the
Network Server, see . See the
for more information on the
Network Server.