hello
friends
i have oracle 8.1.7 on aix machine and
i am able to work on the same under aix
but when i try to connect from the win2000
client i am getting following errors

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ora-01034 oracle not available
ora-27101 shared realm does not exist

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can any body help me
why this error is coming

while my database is working properlly....


help is allways welcome

bhushan