EXP-00056: ORACLE error 29275 encountered

exp test/test file=test.dmp wner=test log=exp.log
出错
EXP-00056: Oracle error 29275 encountered
ORA-29275: partial multibyte character
EXP-00000: Export terminated unsuccessfully
 
原因：字符集不一致

oracle@MDSWEBDB01:>sqlplus/ as sysdba
SQL*Plus: Release 11.1.0.6.0 - Production on Wed Aug 29 15:35:12 2012
Copyright (c) 1982, 2007, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select value from NLS_DATABASE_PARAMETERS where parameter='NLS_CHARACTERSET';
VALUE
--------------------------------------------------------------------------------
AL32UTF8
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
oracle@MDSWEBDB01:>echo$NLS_LANG
AMERICAN_AMERICA.UTF8
 
解决方法：
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
再继续exp