Today I ran into the same problem: CharSetID=0 and NCharSetID=0. It happens with a 9iR2 database (9.2.0.1.0 on a Win2003 server) with NLS_CHARACTERSET=AL32UTF8, NLS_NCHAR_CHARACTERSET=AL16UTF16. The database contains a number of schemas/users. I've created a new one, imported some tables into it...