Workflow error:Unable to set NLS_LANGUAGE

使用Workflow Builder打开数据库的时候报"Unable to set NLS_LANGUAGE"的错误

Error:
220: Unable to set NLS_LANGUAGE.
210: Oracle Error: ORA-01403: 未找到任何数据
. SQL text: SELECT NLS_LANGUAGE FROM WF_LANGUAGES WHERE :l IN (NLS_LANGUAGE, CODE)

解决方法：

参考：https://forums.oracle.com/forums/thread.jspa?threadID=842655

Set NLS_LANG as an operating system environment variable:

1. Select Start - Control Panel - System

2. Select Environment 

3. Set NLS_LANG parameter to AMERICAN_AMERICA.UTF8.

NOTE:设置完之后需要重启workflow builder，再连DB，就没有问题了