今天有一个dmp文件，要导入到新库中，进行了一次的操作。
[oracle@a2 u01]$ imp bj/bj file=/u01/bj.dmp fromuser=bj touser=tt log=/u01/imp.log
Import: Release 11.1.0.6.0 - Production on Mon Nov 7 16:07:02 2011
Copyright (c) 1982, 2007, Oracle.
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
Export file created by EXPORT:V11.01.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses WE8MSWIN1252 character set (possible charset conversion)
export client uses UTF8 character set (possible charset conversion)
Import terminated successfully without warnings.
[oracle@a2 u01]$ imp bj/bj file=/u01/bj.dmp log=/u01/imp.log
Import: Release 11.1.0.6.0 - Production on Mon Nov 7 16:08:20 2011
Copyright (c) 1982, 2007, Oracle.
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
Export file created by EXPORT:V11.01.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses WE8MSWIN1252 character set (possible charset conversion)
export client uses UTF8 character set (possible charset conversion)
IMP-00031: Must specify FULL=Y or provide FROMUSER/TOUSER or TABLES arguments
IMP-00000: Import terminated unsuccessfully
[oracle@a2 u01]$ imp bj/bj file=/u01/bj.dmp full=y log=/u01/imp.log
Import: Release 11.1.0.6.0 - Production on Mon Nov 7 16:10:07 2011
Copyright (c) 1982, 2007, Oracle.
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
Export file created by EXPORT:V11.01.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses WE8MSWIN1252 character set (possible charset conversion)
export client uses UTF8 character set (possible charset conversion)
. importing BJ's objects into BJ
成功
[oracle@a2 u01]$ imp bj/bj file=/u01/bj.dmp fromuser=bj touser=bs log=/u01/imp.log
Import: Release 11.1.0.6.0 - Production on Mon Nov 7 16:13:39 2011
Copyright (c) 1982, 2007, Oracle.
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
Export file created by EXPORT:V11.01.00 via conventional path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
import server uses WE8MSWIN1252 character set (possible charset conversion)
export client uses UTF8 character set (possible charset conversion)
. . importing table
成功
总结如下,如果不知道是采用什么用户导出的，那么使用full=y，如果知道是什么用户导出的，就可以使用fromuser和 touser 指定。