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:

1. sqlplus  /nolog
2. connect / as sysdba
3. 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.