Hi Avadhesh,
Refer following SAP notes
| 169775 | ORA-01017 with BRARCHIVE/BRBACKUP in a run |
1576837 ORA-01017: invalid username/password;
System user is not being used while using brtools to take backup.
You may additionally check the status of OPS$ user using the command
select username, account_status from dba_users;
Regards,
Deepak Kori