Oracle export dump restore slow

Dear Forum,

Master/Media is on Solaris 11 Sparc with NBU 7.6.0.1.

Client is W2K8 Ent. 64 Bit

Oracle export dump which is done on the client server by dba needs to be restored (.dmp).

While performing the restore the process gets dead slow and for restoring small data it takes more than 2 days.

Can you suggest any action plan/ solution for this problem.

Thanks In Advance