Can I do anything to prevent " auto rollback in a transaction when an error occurs "

In a transaction , if a sql command invite an error , all commands before this command will be rollbacked , and the transaction reset and restart.
For example:

BEGIN
insert t1 values(1);
delete from t2
insert t1 values(2);
commit

if table t2 doesn't exist , "delete from t2" invites an error , and the insert will be rollbacked .

How can I prevent the rollback even when an error occurs ? Thanks