One project meet our customers requirements with WE8DEC coding database data, now try the JDBC oci, orai18n. Jar, all can't read in the (orai18n jar parsing have a deviation in Chinese, some for some, it is not the original Chinese characters), give a PL/SQL configuration NLS_LANG is can normal operation database, have no results for several days, hope everybody experienced great god's hand help, grateful

Database: Oracle 11 gr2
Java 1.6