plsql developer 编码不一致的提示，从gbk改为utf8

Database character set (AL32UTF8) and Client character set (ZHS16GBK) are different. Character set conversion may cause unexpected results. 

Note: you can set the client character set through the NLS_LANG environment variable or the NLS_LANG registry key in HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOME0.

 修改本地oracle配置信息

打开注册表,通过dos命令regedit。找到到文中提示的路径，发现NLS_LANG键的值为:

SIMPLIFIED CHINESE_CHINA.ZHS16GBK

修改为：SIMPLIFIED CHINESE_CHINA.AL32UTF8即可