> We had 'internal gds software consistency check (cannot start
> thread)' error. The stack trace is shown below.
>
> Could anyone please suggest us how to deal with it?

Unfortunately this is Firebird's internal error. Most likely this is
environment configuration problem.

> We are running:
> Firebird 1.5.2(FirebirdSS-1.5.2.4731-nptl.i686.rpm),
> FirebirdSQL 1.5.5(FirebirdSQL-1.5.5JDK_1.4.zip),
> with
> JBoss 4.0.1sp1
> on RedHat 9.

Try asking in Firebird-Support list
(http://www.yahoogroups.com/group/Firebird-Support/), they should know more
about this issue.

Roman