As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
Esos detalles los tienes definidos en alfresco-global.properties, por defecto son :
### database connection properties ###db.driver=org.postgresql.Driverdb.username=alfrescodb.password=admindb.name=alfrescodb.url=jdbcostgresql://localhost:5434/${db.name}
Si la instalación va por installer puede que sea el mismo pass que el usuario admin de Alfresco.
Saludos!