dmp导出数据源的oracle版本是12c,我本地oracle版本是11g,这在导入数据过程中导致出现错误
一、用system 用户登录oracle，我忘记了system密码，解决办法：
[oracle@yypc ~]$sqlplus "/as sysdba"
SQL>startup
SQL>conn /as sysdba
SQL>alter user system identified by password;
SQL>alter user system account unlock;
SQL>conn system/password
SQL> Create directory TEST as '/home/oracle/Desktop/test';
SQL> Grant read,write on directory TEST to scott;
SQL> SELECT * FROM dba_DIRECTORIES;
问题： 1、日志和dmp文件不能有路径，dmp文件放到directory所创建的路径下('/home/oracle/Desktop/test')，log文件oracle会自动保存在$ORACLE_HOME目录下
[oracle@yypc ~]$ impdp scott/youyou full=y directory=TEST dumpfile=/home/oracle/Desktop/ExpIirspublish1117.dmp logfile=/home/oracle/Desktop/imp_icdmain_csd_X.log ignore=y
Import: Release 11.2.0.1.0 - Production on Mon Jan 5 10:24:27
Copyright (c) 1982, , Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-39088: file name cannot contain a path specification
[oracle@youyoupc ~]$ impdp scott/youyou full=y directory=TEST dumpfile=/home/oracle/Desktop/ExpIirspublish1117.dmp logfile=imp_icdmain_csd_X.log ignore=y Import: Release 11.2.0.1.0 - Production on Mon Jan 5 10:24:50
Copyright (c) 1982, , Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-39088: file name cannot contain a path specification
问题2：版本所引发的问题，解决高版本向低版本
[oracle@youyoupc ~]$ impdp scott/youyou full=y directory=TEST dumpfile=ExpIirspublish1117.dmp logfile=imp_icdmain_csd_X.log ignore=y
Import: Release 11.2.0.1.0 - Production on Mon Jan 5 10:26:09
Copyright (c) 1982, , Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-39142: incompatible version number 4.1 in dump file "/home/oracle/Desktop/test/ExpIirspublish1117.dmp"
源端数据库版本12c,目标端数据库版本11g，源端数据库版本高于目标端数据库版本，源端导出数据时加上目标端version，
查询版本SQL> show parameter compatible;
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