Anyone? 2017-08-24 16:15 GMT+03:00 Mariel Cherkassky <mariel.cherkas...@gmail.com>:
> I'm trying to understand what postgresql doing in an issue that I'm > having. Our app team wrote a function that runs with a cursor over the > results of a query and via the utl_file func they write some columns to a > file. I dont understand why, but postgresql write the data into the file in > the fs in parts. I mean that it runs the query and it takes time to get > back results and when I see that the results back postgresql write to file > the data and then suddenly stops for X minutes. After those x minutes it > starts again to write the data and it continues that way until its done. > The query returns total *100* rows. I want to understand why it stops > suddenly. There arent any locks in the database during this operation. > > my function looks like that : > > func(a,b,c...) > > cursor cr for > > select ab,c,d,e..... > > begin > > raise notice - 'starting loop time - %',timeofday(); > > for cr_record in cr > > Raise notice 'print to file - '%',timeofday(); > > utl_file.write(file,cr_record) > > end loop > > end > > I see the log of the running the next output : > > starting loop 16:00 > > print to file : 16:03 > > print to file : 16:03 > > print to file : 16:07 > > print to file : 16:07 > > print to file : 16:07 > > print to file : 16:010 > > ...... > > > > Can somebody explain to me this kind of behavior ? Why is it taking some > much time to write and in different minutes after the query already been > executed and finished ? Mybe I'm getting from the cursor only part of the > rows ? > > >
