ORA-01017:invalid username/password;logon denied

ORA-01017:invalid username/password;logon denied

I got this error when I was trying to login Application designer, With same userid/password I was able to login Peoplesoft application.

Solution :- 

Change SYSADM password or
Reset SYSADM password

ALTER USER SYSADM IDENTIFIED BY <<New Password>>

Step 1. Log into DataMover as the Access ID (Bootstrap mode).
Step 2. Then run the following command:

set log c:\temp\sysadm.log;
CHANGE_ACCESS_PASSWORD SYSADM1 <password>;