> After migrating all of our databases from FB 1.0 to 1.5 there is
> ONE database that is corrupted twice in a few days.
> (And we didn't have any corruptions in the last years!)
> This database is the ONLY database that is accessed via standard
> native api AND InterClient.
> Are there any known issues concerning InterClient and database
> corruption?

InterClient JDBC driver is not supported for Firebird 1.x. The official JDBC
driver is JayBird.

> Is it possible to corrupt a database via client access?

Try asking Firebird-Support list. I do not remember any database corruption
reports caused by JayBird.

> Any ideas?

Try upgrading to JayBird. InterClient had a lot of bugs and is not developed
at least for 3 years.

Roman