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Oracle 11G: Import fails: not a valid export file, header failed verification

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Last Modified: 2015-09-15
Hi,
I am trying to import an Oracle 11G dmp file but it is failing with the error: "not a valid export file, header failed verification"
I dont know what is wrong, my client provide me a copy of his Oracle 11G Databse dump.
My client have an Oracle 11G database (Unix)
I have an Oracle 11G database (Windows).

Can somebody help me to fix this issue?

Firstly, I created a new user:

create user userTarget identified by PASSWORD123;
grant connect, unlimited tablespace, resource to userTarget;

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This is the Oracle command I used to import:
imp system/ABCDE FROMUSER=usrSource TOUSER=userTarget file=D:\Temp\bd_pruebas_abcde\BD_FULL_21082015.dmp full=yes

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