Oracle数据库导入后，表中的数据中文显示正常，包中的中文全为问号

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Oracle 数据库导入后，表中的数据中文显示正常，包中的中文全为问号。

 

exp 导出数据文件的时候 OS 为中文操作系统， 并在 OS 为英文操作系统下导入该数据文件，（没有设置环境变量 NLS_LANG ），完成后发现表中的数据中文显示正常，包中的中文全为问号， IMP/EXP 数据库编码同为 ZHS16GBK 。

 

导入导出 OS 环境最好同语言，也可以设置 OS 环境变量 NLS_LANG