Error Message RemoteOperationException: ERROR: Wrong password for user on Preferred Credentials page when test then found Error Connection to .com as user failed: ERROR: Wrong password for user many time check password of opreating system and sys user both ok. following message from "alert_orcl.log" file ----------- Active process 2016 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' Active process 3356 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' Active process 2604 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' Active process 2452 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' Active process 2228 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' Active process 4960 user 'SYSTEM' program 'ORACLE.EXE (SHAD)' SHUTDOWN: waiting for logins to complete. Dump file c:\oracle\product\10.2.0/admin/orcl/bdump\alert_orcl.log -----