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Import (imp) failing with IMP-00010 error

Nagaraju PMay 19 2012 — edited May 23 2012

Hi Experts,

I am doing import to Windows from an export dump that was taken on Solaris 10. But the import is failing with the following error.

IMP-00010: not a valid export file, header failed verification
IMP-00000: Import terminated unsuccessfully

I checked the source and target oracle versions and NLS_LANG parameter.
In both the databases NLS_LANG parameter is set to AMERICAN only. But the oracle versions are different

Source
-----------
OS : Solaris 10
Oracle version : *11.2.0.2*
Export dump : exp_CAAU2.dmp.gz (Export taken by zipping)

Target
---------
OS : Windows server 2003
Oracle Version : *10.2.0.2.0*
While importing into windows env, it is failing..

Please let me know the reason why the import is failing?

Can i upgrade the target oracle version to 11.2.0.2 to succeed the import?