SQL & PL/SQL

Hello.

I have a lot of SQL statements (like 2-3 Mio) - plain inserts, deletes and updates. In a previous post, I asked how to embed exceptions for the statements:
4163808

Here is the solution and this is how my script looks like now (with only 7 statements in 3 blocks out of these millions of statements):

BEGIN
  BEGIN
     DELETE ...
     COMMIT;
  EXCEPTION
     WHEN OTHERS THEN
         dbms_output.put_line(sqlerrm);
        ROLLBACK;
        raise;
  END;
   
  BEGIN
    INSERT ...
    INSERT ...
    INSERT ...
    COMMIT;
  EXCEPTION
     WHEN OTHERS THEN
        dbms_output.put_line(sqlerrm);
        ROLLBACK;
        raise;
  END;
   
  BEGIN
     INSERT ...
     UPDATE ...
     COMMIT;
  EXCEPTION
     WHEN OTHERS THEN
       dbms_output.put_line(sqlerrm);
        ROLLBACK;
       raise;
  END;      
END;      
/

So it seems, that for oracle this is only one very big statement (the .sql file is over 1 GB big) and oracle tries at first to parse everything. In my case - obviously unsuccessful, because I received the ORA-24373: invalid length specified for statement. So my question is - what is the max length of a statement? Is there a work-around for this issue?

Thanks a lot!