Continuing Inserts in Oracle when exception is raised

Question

I\'m working on migration of data from a legacy system into our new app(running on Oracle Database, 10gR2). As part of the migration, I\'m working on a script which inserts

Answer 1

If you use sqlldr you can specify to continue loading data, and all the 'bad' data will be skipped and logged in a separate file.

Answer 2

Using PLSQL you can perform each insert in its own transaction (COMMIT after each) and log or ignore errors with an exception handler that keeps going.

Answer 3

If the data volumes were higher, row-by-row processing in PL/SQL would probably be too slow. In those circumstances, you can use DML error logging, described here

CREATE TABLE raises (emp_id NUMBER, sal NUMBER 
   CONSTRAINT check_sal CHECK(sal > 8000));

EXECUTE DBMS_ERRLOG.CREATE_ERROR_LOG('raises', 'errlog');

INSERT INTO raises
   SELECT employee_id, salary*1.1 FROM employees
   WHERE commission_pct > .2
   LOG ERRORS INTO errlog ('my_bad') REJECT LIMIT 10;

SELECT ORA_ERR_MESG$, ORA_ERR_TAG$, emp_id, sal FROM errlog;

ORA_ERR_MESG$               ORA_ERR_TAG$         EMP_ID SAL
--------------------------- -------------------- ------ -------
ORA-02290: check constraint my_bad               161    7700
 (HR.SYS_C004266) violated

Answer 4

DECLARE
   cursor;
BEGIN
    loop for each row  in cursor
      BEGIN  -- subBlock begins 
         SAVEPOINT startTransaction;  -- mark a savepoint
 -- do whatever you have do here
         COMMIT;         
      EXCEPTION
         ROLLBACK TO startTransaction;  -- undo changes
      END;  -- subBlock ends
   end loop;
END;

Answer 5

Try this:

for r_row in c_legacy_data loop
  begin
    insert into some_table(a, b, c, ...)
    values (r_row.a, r_row.b, r_row.c, ...);
  exception
    when others then 
      null;  /* or some extra logging */
  end;
end loop;