pg_stat_database

There are five columns in the view.  I am just looking for some confirmation
on what the terms mean.

Number of backends:   Is this just the number of active connections to the
database?

total transactions committed:  I think i get this one.

total rolled back: I don't have a clue what rolling back means, does anybody
else?

total disk blocks read:  I'm OK with this one.

total buffer hits:  OK with this one too :)

Any explanations wouyld be greatly appreciated.

Many thanks

Roy Crombleholme
Trainee ICT Engineer
ICT Services
Resources Directorate
Lancashire County Council
01772 5-31849
Email:  roy.crombleholme@its.lancscc.gov.uk



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