Hi Kapil, Thanks very much for your valuable time, explaining me in detail. Could you please tell me whether these commands applicable to 8.4, what are the versions that these commands are compatible. And one more thing would you please provide me some information regarding hot standby (what are the versions it is compatible, and useful views to check the status of hot standby) Appreciate your patience. Thanks, Satish K. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Archive-views-tp5805521p5805651.html Sent from the PostgreSQL - general mailing list archive at Nabble.com.