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(dot)crombleholme(at)its(dot)lancscc(dot)gov(dot)uk

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