login to OAM 11gr2 failed due to OVD adaptor password expired

logs at OAM shows these error while trying to login to OAM console.

User <anonymous> 
Thread ID [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)' 
ECID 0051wdyO4FUFw0ULy6^AyW0004B50000jk 
Message Could not get user : eidmhptest6, idstore: OVDStore, with exception: oracle.security.idm.OperationFailureException: javax.naming.NamingException: [LDAP: error code 1 - LDAP Error 1 : Error Communicating with database: ORA-28000: the account is locked 

Solution:
check diagonistic logs. you will see following error.

 [ERROR] [OVD-60160] [com.octetstring.vde.backend.db.ICS DB Adapter.BackendDB] [tid: 45] [ecid: 0051wi9gUchFw0ULy6^AyW0004B500017g,0:2:3] [URI: /oam/server/auth_cred_submit] Failure in loading database metadata [#IACS DB Adapter] .[[ 
java.sql.SQLException: ORA-28000: the account is locked 

it shows the ICS DB Adapter credentials are expired.


check adaptor information at
$ORACLE_INSTANCE/config/OVD/ovd1/adapters.os_xml file 

change the OVD adaptor information (change password) and restart the service it should fix the issue.