Exception Handling in stored procedure

Hi,
I have created one stored procedure in which i have written a cursor in which i am fetching some records. on the basis of value(suppose transaction_id) which i get in cursor i am doing some operations like updations/insertion etc. if any error come while updation/insertion for particular record it comes out of cursor loop & for next records i could not perform any operations like updations/insertion. can anybody suggest how i should handle an exception so that if any error comes in loop for any record if should move further for next records for performing the operation.
Thanks in advance