Thanks for the advise.
But could you please suggest a better sizing for the reodlogs and logbuffers ?
Is a redolog of size 5M okay. I will be doing lot of large file import, extraction and exports. also, I intend to cahce a feew tables. I have 8GB of memory at my disposal. So theoritically I can use 4GB of Memory for oracle.

please advise.

Thanks,

Geo