Tarek Fathy

RemoteOperationException: ERROR: Invalid username and/or password Hi Do you face this problem? When you try to start up the oracle database using EM,you are prompted to enter windows username and password.And you are sure that the username and password are correct, however this error occurs. This is the solution: Step1 : Goto control panel -> Administrative Tool -> Local Security Settings.        Local Policies -> User Rights Assignment -> double click on 'Log on as a batch job' Step 2 : Add the user here which you are trying accessing the OEM and click apply and OK. Step3 : Follow the step 2 for adding user to 'Log on as a service'. Step4 : Now try to log on to OEM.           You will get the following screen if db is down. Hope this could help you to resolve the error.