Ottavio Campana wrote: > I'm writing a python script to update some tables in a db. My > problem is > that I need to lock a couple of tables, perform several operations and > read the corresponding output. > > I was thinking about lock in exclusive mode, but in the > documentation I > found that it is valid only in a transaction. But since I need to > execute a command and read the output and so forth, I think I > cannot use > a transaction. > > What would you use to lock the table? What makes you think that you "need to lock a couple of tables"? Maybe there is a different, less invasive way to solve your problem. What do you want to achieve? Yours, Laurenz Albe ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq