How to find error message from OMS repository

SQL> desc sysman.MGMT_CURRENT_METRIC_ERRORS;
Name					   Null?    Type
----------------------------------------- -------- ----------------------------
TARGET_GUID				   NOT NULL RAW(16)
METRIC_GUID				   NOT NULL RAW(16)
COLL_NAME				   NOT NULL VARCHAR2(64)
AGENT_GUID				   NOT NULL RAW(16)
COLLECTION_TIMESTAMP			   NOT NULL DATE
METRIC_ERROR_MESSAGE				    VARCHAR2(4000)
METRIC_ERROR_TYPE				    NUMBER(1)

/* MGMT_CURRENT_METRIC_ERRORS记录了当前出现在OMS console中的度量错误记录 */

SQL> desc sysman.MGMT_METRIC_ERRORS;
Name					   Null?    Type
----------------------------------------- -------- ----------------------------
TARGET_GUID				   NOT NULL RAW(16)
METRIC_GUID				   NOT NULL RAW(16)
COLL_NAME				   NOT NULL VARCHAR2(64)
AGENT_GUID				   NOT NULL RAW(16)
COLLECTION_TIMESTAMP			   NOT NULL DATE
METRIC_ERROR_MESSAGE				    VARCHAR2(4000)
METRIC_ERROR_TYPE				    NUMBER(1)

/* MGMT_METRIC_ERRORS为度量错误历史记录 */

SQL> SELECT METRIC_ERROR_MESSAGE,COLLECTION_TIMESTAMP,METRIC_ERROR_TYPE FROM MGMT_CURRENT_METRIC_ERRORS WHERE COLLECTION_TIMESTAMP<'20-Mar-11';

METRIC_ERROR_MESSAGE				   COLLECTIO METRIC_ERROR_TYPE
-------------------------------------------------- --------- -----------------
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1,SQLINPARAM4]	   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Missing Properties : [SQLINPARAM1]		   03-MAR-11		     0
Result has repeating key value : OCM_APPLY,apply   05-MAR-11		     0

/* 以上查询显示了3月20前出现的仍在console中的信息记录 */

SQL> desc sysman.mgmt$alert_current;
Name					   Null?    Type
----------------------------------------- -------- ----------------------------
TARGET_NAME				   NOT NULL VARCHAR2(256)
TARGET_TYPE				   NOT NULL VARCHAR2(64)
TARGET_GUID				   NOT NULL RAW(16)
VIOLATION_GUID 				    RAW(16)
METRIC_NAME				   NOT NULL VARCHAR2(64)
METRIC_COLUMN				   NOT NULL VARCHAR2(64)
METRIC_GUID				   NOT NULL RAW(16)
METRIC_LABEL					    VARCHAR2(64)
COLUMN_LABEL					    VARCHAR2(256)
KEY_VALUE					    VARCHAR2(256)
KEY_VALUE2					    VARCHAR2(256)
KEY_VALUE3					    VARCHAR2(256)
KEY_VALUE4					    VARCHAR2(256)
KEY_VALUE5					    VARCHAR2(256)
COLLECTION_TIMESTAMP				    DATE
ALERT_STATE					    VARCHAR2(18)
VIOLATION_LEVEL			   NOT NULL NUMBER
VIOLATION_TYPE 				    VARCHAR2(19)
MESSAGE					    VARCHAR2(4000)
MESSAGE_NLSID					    VARCHAR2(64)
MESSAGE_PARAMS 				    VARCHAR2(4000)
ACTION_MESSAGE 				    VARCHAR2(4000)
ACTION_MESSAGE_NLSID				    VARCHAR2(64)
ACTION_MESSAGE_PARAMS				    VARCHAR2(4000)
TYPE_DISPLAY_NAME				    VARCHAR2(128)
CURRENT_VALUE					    VARCHAR2(1024)

/* mgmt$alert_current记录当前Grid中活跃的警告信息，类似的mgmt$alert_history为其历史记录表 */

SQL> select target_name,message from SYSMAN.mgmt$alert_current;

TARGET_NAME	     MESSAGE
-------------------- ----------------------------------------------------------------------------------------------------
nas:3872	     Difference between OMS system time and Agent system time is 7680 mins and has exceeded the critical
threshold 120 mins

rh3:3872	     Agent Virtual Memory Growth is 1.53%
rh3:3872	     Count of targets not uploading exceeded the critical threshold (0). Current value: 2
EMREP_rh3	     User SYS logged on from rh3.oracle.com.
LSN1_rh3	     The listener is down: TNS-12541: TNS:no listener .
rh6:3872	     Difference between OMS system time and Agent system time is 7199 mins and has exceeded the critical
threshold 120 mins

Management Services  Management Service Status for nas:4889_Management_Service exceeded the critical threshold (DOWN). Cu
and Repository	     rrent value: DOWN