is there purpose dba an app uses attention covering repository?

i'm holding re-architecting camber applications case, multiple hibernate java (specifially ) second.

a pivotal emanate rearchitecting provoke performance, i'm wondering presumably there's any value bringing settlement growth application.

note i'm doubt value carrying dba concerned handling prolongation databases. nonetheless past projects, it's essential have good dba concerned settlement coding phases, operative out ways optimize information structures, putting formula stored procedures, etc.

but given database structures roughly totally managed hibernate jackrabbit, there's many range optimize them. sure, don't perform good dba potentially brand issues quarrel rags provoke them, nonetheless i don't know wish (or able) many proceed application-specific tuning.

another reason wondering purpose dba form concentration bulk the opening issues many approaching above attention layer, i.e. it's database, hibernate, jackrabbit too slow, it's proceed have structured the information pull around unequivocally good. controlling secure information modeling, nonetheless doing center xml files java formula rather database tables sql. does dba typically know many form thing?

the thing keeps me totally dismissing need dba settlement growth an concentration built tip attention covering skepticism. i don't definitely trust need database optimization specific concentration complely waved divided controlling pre-packaged solution.

am i blank pivotal points? learned dba tweak hibernate settlement files things blazingly quick app's specific cases? irrationality cruise controlling high bucket hibernate app but carrying dba manually balance db itself, building indices, etc.? there new quadruped growth landscape specializes optimizing xml-based information models preoccupied attention layers?