Run ./blappconf present under NSH/bin on the appserver and that would allow you to change the password for BL Database schema
Yeap, I forgot about this console. Thanks Ankur.
Blasadmin –a set data pass xxx
Blasadmin –s _spawner set data pass xxx
Blasadmin –s _pxe set pxe pass xxx
Is all you need. if you have bdssa you need to update the passwd in the database link from the dw to bsa.