After using imp import today, found in garbage comments, source, destination database version is 11.2.0.1
View source character set:
SQL> select userenv('language') from dual;
USERENV('LANGUAGE')
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AMERICAN_AMERICA.AL32UTF8
Goal-side character set:
The SQL> SELECT Userenv ( 'Language') from Dual;
USERENV ( 'the LANGUAGE')
-------------------------------- --------------------
AMERICAN_AMERICA.AL32UTF8
examination revealed the source NLS_LANG is not set, set the source, target end NLS_LANG, to solve the garbage problem.
AMERICAN_AMERICA.AL32UTF8 the NLS_LANG = Export
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