How to use LONG field in the Where clause

Hi all,

Message contain date like 'Reached bad state' 'Error' I want to find the records which are having 'Error' in it. I can't use
select * from atc_message_log where msg_content like '%Error%'; Thanks in Advance.
Rangesh

SQL> desc atc_message_log;

 Name                                      Null?    Type
 ----------------------------------------- -------- ------------------------

---

 OBJ_ID                                    NOT NULL NUMBER(9)
 COMP_ID                                   NOT NULL NUMBER(9)
 INTEGRATION_ID                            NOT NULL VARCHAR2(300)
 WORK_UNIT_ID                              NOT NULL NUMBER(9)
 MSG_NBR                                   NOT NULL NUMBER(9)
 TIMESTAMP                                 NOT NULL DATE
 SEVERITY                                           NUMBER(5)
 MSG_CONTENT                                        LONG

SQL>