[ADMIN] How do i compare 2 postgresql instanses ?

[Potluri Srikanth]

 
 How do i compare 2 postgresql instanses ?
 1) compare all objects including data in tables a) production box b)
DR site ?
 can you help me with the query, through which i can get all the
object of each schema/database ?
 Regards, 
 Srikanth k Potluri