Q: multiple connections

Hi! I'm using a java/jdbc application to connect to an Informix 7.24 server residing on a SunOs 5.5.1 machine. Sometimes the connections don't get closed properly, and when I try to reconnect I get the error-message "SQLException: XIX000:-27000:Cannot support multiple connections over shared memory." Then I have to manually close the connection from the server-end to get it running again. My questions is this: 1) How should I do to get Informix to close a connection to a client that is gone? 2) Can I get Informix in some way to support multiple connections? regards / Fredrik Fyring