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ORA-12547 TNS : lost contact

user10945315Aug 21 2009 — edited Aug 23 2009

Hi,

I am running oracle apps 11.5.10.2 on Windows server 2003 (as guest OS on Microsoft virutal pc 2007).

My host OS is Windows 7 Professional.

I am trying to connect to the apps database using SQL Plus 11g client from Windows 7.

It throws an error ORA 12547 TNS lost contact.

I am able to access the front end on host but cannot connect to backend.

Can anyone help me what's wrong with my settings/what should i change?

Thanks
Rk

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Added on Aug 21 2009

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