I am moving to california from oregon. my driving record is not good.
1 accident and 2 tickets (1 speeding and 1 illegal turn) within the
past 2 years.
I am thinking that of moving to california and get a new driving
licence, and then apply for insurance. will the california insurance
companies use my oregon record in determining my rates or will they
only use what the cali. dmv record shows?

Your new insurance will, most likely, ask you to report any tickets or
violations you've had in the past 3 years - regardless of location or
drivers license number.  While you might be able to have insurance
issued on your new CA drivers license number and clean record, if you
have not honestly reported known violations from your previous
location the insurer would have grounds to drop you or potentially
deny claims based on the fact that you provided false/incomplete
information on the application.  You might even wind up paying for
insurance that would never pay.