We have created custom connector to Oracle DB using XPress connector utility. This connector uses default thin Oracle JDBC driver. A problem is that NLS_LANG parameter is always passed as US, independently of windows locale or NLS_LANG environment system variable value.
IM version is 12.6 SP8 on Windows 2012 server.
We have also old IM version, such as 12.0 SP4 on Widows 2003 server, where the same connector works well.