Disconnected from DB when attempting to create trigger.

Question

I receive an ORA-03113: end-of-file on communication channel when creating this trigger. Could it be that the user that I'm logged in as does not have privileges to create triggers or something else?
CREATE OR REPLACE TRIGGER SLEA_TRANSACTION_TR
  BEFORE INSERT OR UPDATE OR DELETE ON tb_slea_transaction
  FOR EACH ROW   
BEGIN
  IF INSERTING THEN
  INSERT INTO tb_slea_transaction_audit (audit_timestamp,
                                         slea_year,
                                         empid,
                                         trans_date,
                                         sum_sort,
                                         dtl_sort,
                                         record_type,
                                         online_ind,
                                         paid_status,
                                         trans_amt,
                                         trans_id,
                                         updated_date,
                                         updated_by,
                                         comments,
                                         orig_trans_date,
                                         split_ind)
        VALUES (SYSTIMESTAMP,
                :new.slea_year
                :new.empid,
                :new.trans_date,
                :new.sum_sort,
                :new.dtl_sort,
                :new.record_type,
                :new.online_ind,
                :new.paid_status,
                :new.trans_amt,
                :new.trans_id,
                :new.updated_date,
                :new.updated_by,
                :new.comments,
                :new.orig_trans_date,
                :new.split_ind); 
  ELSE
    INSERT INTO tb_slea_transaction_audit (audit_timestamp,
                                         slea_year,
                                         empid,
                                         trans_date,
                                         sum_sort,
                                         dtl_sort,
                                         record_type,
                                         online_ind,
                                         paid_status,
                                         trans_amt,
                                         trans_id,
                                         updated_date,
                                         updated_by,
                                         comments,
                                         orig_trans_date,
                                         split_ind)
        VALUES (SYSTIMESTAMP,
                :OLD.slea_year
                :OLD.empid,
                :OLD.trans_date,
                :OLD.sum_sort,
                :OLD.dtl_sort,
                :OLD.record_type,
                :OLD.online_ind,
                :OLD.paid_status,
                :OLD.trans_amt,
                :OLD.trans_id,
                :OLD.updated_date,
                :OLD.updated_by,
                :OLD.comments,
                :OLD.orig_trans_date,
                :OLD.split_ind); 
   END IF;
END SLEA_TRANSACTION_TR;

Answer 1

Are you trying to create or recreate the trigger?
To turn on the debug you must:
1) Create the trigger a first time
2) Turn on the debug: "alter trigger trigger_name compile debug";
3) Recreate the trigger (create or replace trigger_name ...) -- BUG
The bug on 9i happens step 3, when you try to Recreate the trigger.
If you don't know about the debug, try to drop and create the trigger.
You can take a look on the NoteId 2256092 in Metalink.
Hope its help,
Paulo.