Error ORA-28001 indicates that the password has expired.
In order to reset the password, on the computer where the Oracle database is located, run the command line start-> run-> cmd
And then perform:
- sqlplus /nolog
- connect / as sysdba
- ALTER USER user_name IDENTIFIED BY new_password;
Note that after resetting the password, you must enter it in the window displayed when you start the aSISt application.