数据泵导出文件更换名称，对导入操作无影响

问题描述： expdp 导出 dmp文件，但是导出操作时，dmp文件命名有误。 mv将导出后的dmp文件重命名。这样对 impdp 操作会有什么影响呢？
结论：只要命令敲对，文件名写正确，impdp操作不受影响

一、模拟开始
scott用户下的表

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SQL> conn scott/tiger
Connected.
SQL>
SQL> select count(*) from tab;
COUNT(*)
----------
4
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE

新建用户liuyaya下的表

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SQL> conn / as sysdba
Connected.
SQL>
SQL>
SQL> create user liuyaya identified by oracle account unlock;
User created.
SQL> SQL>
SQL>
SQL>
SQL> grant connect,resource to liuyaya;
Grant succeeded.
SQL>
SQL> conn liuyaya/oracle
Connected.
SQL> select count(1) from tab;
COUNT(1)
----------
0

   数据泵导出scott用户下的表

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SQL> conn sys/oracle as sysdba

Connected.

SQL> create or replace directory expdp_dir_scott01 as '/soft';

Directory created.

SQL> grant read,write on directory expdp_dir_scott01 to scott;

Grant succeeded.

SQL> exit

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[oracle@redhat6 ~]$ expdp scott/tiger directory=expdp_dir_scott01 schemas=scott datafile=scott01.dmp logfile=scott01.log parallel=2;

LRM-00101: unknown parameter name 'datafile'

[oracle@redhat6 ~]$ expdp scott/tiger directory=expdp_dir_scott01 schemas=scott dumpfile=scott01.dmp logfile=scott01.log parallel=2;

Export: Release 11.2.0.4.0 - Production on Thu Jun 21 19:15:52 2018

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

Starting "SCOTT"."SYS_EXPORT_SCHEMA_01": scott/******** directory=expdp_dir_scott01 schemas=scott dumpfile=scott01.dmp logfile=scott01.log parallel=2

Estimate in progress using BLOCKS method...

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 192 KB

. . exported "SCOTT"."DEPT" 5.929 KB 4 rows

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

. . exported "SCOTT"."EMP" 8.562 KB 14 rows

. . exported "SCOTT"."SALGRADE" 5.859 KB 5 rows

. . exported "SCOTT"."BONUS" 0 KB 0 rows

Processing object type SCHEMA_EXPORT/TABLE/TABLE

Processing object type SCHEMA_EXPORT/TABLE/COMMENT

Processing object type SCHEMA_EXPORT/TABLE/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/CONSTRAINT/REF_CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS

Master table "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded

******************************************************************************

Dump file set for SCOTT.SYS_EXPORT_SCHEMA_01 is:

  /soft/scott01.dmp

Job "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully completed at Thu Jun 21 19:16:13 2018 elapsed 0 00:00:20

   修改dumpfile文件名

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[oracle@redhat6 ~]$ cd /soft

[oracle@redhat6 soft]$ ls

database scott01.dmp scott01.log zjgd_back

[oracle@redhat6 soft]$ mv scott01.dmp liuyaya.dmp

[oracle@redhat6 soft]$ ls

database liuyaya.dmp scott01.log zjgd_back

导入到新建用户liuyaya

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[oracle@redhat6 soft]$ impdp \'/ as sysdba\' directory=expdp_dir_scott01 dumpfile=liuyaya.dmp remap_schema=scott:liuyaya logfile=liuyaya.log parallel=2

Import: Release 11.2.0.4.0 - Production on Thu Jun 21 20:18:01 2018

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 "SYS"."SYS_IMPORT_FULL_01" successfully loaded/unloaded

Starting "SYS"."SYS_IMPORT_FULL_01": "/******** AS SYSDBA" directory=expdp_dir_scott01 dumpfile=liuyaya.dmp remap_schema=scott:liuyaya logfile=liuyaya.log parallel=2

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

. . imported "LIUYAYA"."DEPT" 5.929 KB 4 rows

. . imported "LIUYAYA"."EMP" 8.562 KB 14 rows

. . imported "LIUYAYA"."SALGRADE" 5.859 KB 5 rows

. . imported "LIUYAYA"."BONUS" 0 KB 0 rows

Processing object type SCHEMA_EXPORT/TABLE/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/CONSTRAINT/REF_CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS

Job "SYS"."SYS_IMPORT_FULL_01" successfully completed at Thu Jun 21 20:18:05 2018 elapsed 0 00:00:02

[oracle@redhat6 soft]$ sqlplus liuyaya/oracle

SQL*Plus: Release 11.2.0.4.0 Production on Thu Jun 21 20:18:18 2018

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

SQL> select * from tab;

TNAME             TABTYPE    CLUSTERID

------------------------------ ------- ----------

BONUS             TABLE

DEPT             TABLE

EMP             TABLE

SALGRADE         TABLE

二、总结

将改了名字的dmp文件顺利导入到其他schema下，证明

数据库导出文件可以改名字，对导入操作无影响

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数据泵导出文件更换名称，对导入操作无影响

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