help me
I got the following error into our database .....
Errors in file /oracle/product/admin/ora10g/bdump/ora10g1_j006_879.trc:
	
ORA-12012: error on auto execute of job 641
	
ORA-12532: TNS:invalid argument
	
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2254
	
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2460
	
ORA-06512: at "SYS.DBMS_IREFRESH", line 683
	
ORA-06512: at "SYS.DBMS_REFRESH", line 195
	
ORA-06512: at line 1
can any one help me to resolve the issue. 
	
email:Kevene1986@hotmail.com