oracle 英文都乱码了~该如何处理

oracle 英文都乱码了~~~~~~~~~~~~~~~今天下午新建了个实例. 结果提示都变成乱码了. 求问各位大神那里的问

oracle 英文都乱码了~~~~~~~~~~~~~~~
今天下午新建了个实例. 结果提示都变成乱码了. 求问各位大神那里的问题啊?
效果如下.
oracle 英文都乱码了~该如何处理
oracle 英文都乱码了~该如何处理
[解决办法]
select userenv('language') from dual


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-YY
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_FORMAT                                               HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT                                          DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY                                                RMB
NLS_NCHAR_CHARACTERSET                                           AL16UTF16
NLS_COMP                                                         BINARY
NLS_LENGTH_SEMANTICS                                             BYTE
NLS_NCHAR_CONV_EXCP                                              FALSE
 
19 rows selected
SQL> select userenv('language') from dual;
USERENV('LANGUAGE')
----------------------------------------------------
SIMPLIFIED CHINESE_CHINA.ZHS16GBK