1. deploy a rep into report deployment path defined in sourcedir in <oracle_home>\reports\conf\<repserver>.conf
2. make sure the rep can print correctly
3. define two environment ids in <repsrever>.conf, one is utf8 with nls_lang set as american_american.utf8, the other is called zhs, with nls_lang set to simplified chinese_china.zhs16gbk
4. in the engine section, add the defaultenvid
<property name="defaultenvid" value="zhs"/>.
remember to restart the report server whenever this file is changed.