背景：win764bit英文操作系统(支持中文)
oracle11G默认安装
从ZHS16GBK字符集导入数据库
表现：plsql显示为乱码，所有汉字显示为“靠”
解决：1、查看并更改数据库的编码为ZHS16GBK
$sqlplus system/oracle
SQL> select * from v$nls_parameters;
PARAMETER VALUE
------------------------ -----------------------------
NLS_LANGUAGE SIMPLIFIED CHINESE
NLS_TERRITORY CHINA
NLS_CURRENCY RMB
NLS_ISO_CURRENCY CHINA
NLS_NUMERIC_CHARACTERS .,
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE SIMPLIFIED CHINESE
NLS_CHARACTERSET ZHS16GBK
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ