Can u check one thing.. Connect to the DB as sys user and check whether user BI schema owner is not locked?
Open Sql developer -> Connect to your DB SYS-> Expand Users -> Right Click BI Schema User -> Properties
If 'Account Locked' checkbox is ticked, then thats causing the issue, uncheck it and restart the BI publisher.
Shiva Shankar B N
No, the account is not locked at database level.