oracle常用维护语句
1、如何查询Oracle 编码格式http://write.blog.csdn.net/postedit
select value from nls_database_parameters where parameter='NLS_CHARACTERSET';
VALUE--------------------------------------------
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2、查询oracle客户端编码
select * from nls_instance_parameters where parameter='NLS_LANGUAGE';
PARAMETER VALUE
NLS_LANGUAGE SIMPLIFIED CHINESE