I checked it earlier today, but Metalink was down for maintenance. And yes ... it is up again now. Here's what it says:[quote=Metalink, several documents]
When using pre-9i Jdbc-Thin to talk to a 9i (or post-9i) database, you will see an ORA-600 exception on almost everything you do. eg: ORA-600 [ttcgcshnd-1 ].
Oracle is checking that the local character set id is valid as part of the process to do character data conversions between different character sets.
This error is raised when the local character set id is found to be invalid.
ORA-600 [ttcgcshnd-1] [a]: Argument [a] is local character set id
Workaround: Set event="10841 trace name context forever" in the init.ora file[quote]Perhaps it'll help ...