Hi Guys

I have the test and production databases on the same server

today morning when i tried to connect to the test database i am getting error like:

ora-01034 Oracle not availabe
ora-09243 Error attaching to SGA
osd-04101 Invalid sga:SGA not initialized

I am working on oracle 7.3.4 and on WIN NT 4.0

Could you please give me any solutions for this as soon as possible

Thanks
Ravi