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

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

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EXP-00056: ORACLE error 29275 encountered

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