Re: Why is JDBC so slow?
| От | Joseph Shraibman |
|---|---|
| Тема | Re: Why is JDBC so slow? |
| Дата | |
| Msg-id | 3F551EEF.8050109@selectacast.net обсуждение исходный текст |
| Ответ на | Re: Why is JDBC so slow? (Oliver Jowett <oliver@opencloud.com>) |
| Список | pgsql-jdbc |
> This can obviously still be improved on, but I think some of the blame for > slow execution can be pinned on your heap settings not being tuned for the > object allocation the client does. > Interesting. I wouldn't have though that expanding the heap was such a slow operation. I wrote this test so I could compare JDBC and psql side by side. My real application uses a cursor and the memory doesn't get so big. > Incidentally, your use of getFetchSize() to size the return array in > getResults() seems buggy .. I believe the "correct" way is to do > ResultSet.last() then ResultSet.getRow(). That's what I used to do, but it makes the code cleaner to use getFetchSize(). Seems to work all the time for me.
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