I have used firebird for multiple tomcat web applications.
We use the tomcat connection pool successfully for multiple
applications.

Recently we had to resurrect two applications and use UTF-8.
We think all the right things were done:
post requests use tomcat built-in filter
application.xml file says UTF-8
jsp files all marked for UTF-8

The applications come up and we can do things with them, but the
connections seem to start failing within a minute or so.

I am not sure that we have not done something else wrong, but the only
commonality between the two applications failing is UTF-8.

Has anyone seen anything like this?