取了个 dmp 文件，导入报错了，原因是 dmp 文件是通过 expdp 方法导出的，只能通过 impdp 方法导入才行。
C:\Users\Administrator>imp ncc_qt/1@orcl file=f:\ncc0303.dmp
报错信息如下：
IMP-00038: Could not convert to environment character set's handle IMP-00000: Import terminated unsuccessfully
impdp 导入功能演示：
先登录 oracle 库。
C:\Users\Administrator>sqlplus ncc_qt/1@orcl SQL*Plus: Release 11.2.0.4.0 Production on Tue Jun 2 15:38:00 2020 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
然后创建一个 directory，路径指向 dmp 文件所在的位置。
然后 quit 退出来。
SQL> create directory dmp_site as 'f:'; Directory created. SQL> quit Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64 bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
dumpfile 直接对应 dmp 名即可。
remap_schema=A:B 命令可以用来把原来 Ashema 表的数据导入到 B 表中。
C:\Users\Administrator>impdp ncc_qt/1@orcl directory=dmp_site dumpfile=ncc0303.d mp remap_schema=ncc0303:ncc_qt Import: Release 11.2.0.4.0 - Production on Tue Jun 2 16:20:18 2020 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Master table "NCC_QT"."SYS_IMPORT_FULL_01" successfully loaded/unloaded Starting "NCC_QT"."SYS_IMPORT_FULL_01": ncc_qt/********@orcl directory=dmp_site dumpfile=ncc0303.dmp remap_schema=ncc0303:ncc_qt Processing object type SCHEMA_EXPORT/USER ORA-31684: Object type USER:"NCC_QT" already exists Processing object type SCHEMA_EXPORT/SYSTEM_GRANT Processing object type SCHEMA_EXPORT/ROLE_GRANT Processing object type SCHEMA_EXPORT/DEFAULT_ROLE Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA Processing object type SCHEMA_EXPORT/TABLE/TABLE ... 省略导入过程 . . imported "NCC_QT"."ZDP_1000000000JJR1" 0 KB 0 rows . . imported "NCC_QT"."ZDP_1000000000JJR3" 0 KB 0 rows Processing object type SCHEMA_EXPORT/TABLE/COMMENT Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX Processing object type SCHEMA_EXPORT/TABLE/INDEX/FUNCTIONAL_INDEX/INDEX Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/FUNCTIONAL_INDEX/IND EX_STATISTICS Processing object type SCHEMA_EXPORT/VIEW/VIEW Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS Job "NCC_QT"."SYS_IMPORT_FULL_01" completed with 1 error(s) at Tue Jun 2 16:35:1 2 2020 elapsed 0 00:14:54
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