I have problems with encoding when use timesten database with DatabaseCharacterSet=AL32UTF8. If I use DatabaseCharacterSet=US7ASCII all ok.
I don't have this problem if connect to timesten using ttisql.
Server - TimesTen Release 22.214.171.124.0 (64 bit Linux/x86_64) (tt1121:53388) 2009-11-19T19:20:36Z
Client - TimesTen Release 126.96.36.199.0 (64 bit Linux/x86_64) (tt1121:53388) 2009-11-19T19:20:36Z on Windows XP
SqlDeveloper - Oracle SQL Developer 188.8.131.52 Build MAIN-63.73
I can't reproduce this going from SQL Developer on XP with TT 184.108.40.206 32bit installed, to TT 220.127.116.11 32bit on Linux x8664. Can you paste in your DSN settings on the server side and also check the ConnectionCharacterSet setting in the Oracle TimesTen Client DSN Setup (accessed via ODBC Data Source Administrator). Mine is blank. AFAIK SQL Developer should just use AL32UTF8 only as its ConnectionCharacterSet for TT.