Re: Slow statement when using JDBC
От | Lachezar Dobrev |
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Тема | Re: Slow statement when using JDBC |
Дата | |
Msg-id | CA+xsaB13N+dpr4iO=Kop0qpkLf1DTvtcWfqmkYwMEyMRDrN9eQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Slow statement when using JDBC (David G Johnston <david.g.johnston@gmail.com>) |
Ответы |
Re: Slow statement when using JDBC
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Список | pgsql-jdbc |
If the prepare phase is what might be the culprit, one might want to try the JDBC using protocol version 2 and rerun any tests: jdbc:postgresql//host:port/database?protocolVersion=2 2014-07-21 8:32 GMT+03:00 David G Johnston <david.g.johnston@gmail.com>: > arunkmp wrote >> i tested same query in php using pear-Db connectivity its nomally 2 times >> faster than java conntivity. >> >> for both my postgresql version 9.1, >> >> can anyone explain me why its speeder in php. > > Given that the reason for the poor JDBC performance has been explained this > likely isn't the best list to get answers as to why PHP doesn't seem to > exhibit the same problem... > > It would probably also help to supply actual code since your use of the two > libraries could be a contributing factor. > > And the versions of the drivers would also be good information to supply... > > PHP is possibly bypassing the whole "prepare" aspect and simply providing > what appears to be a prepared statement interface while actually sending > complete queries, without parameters, to the database. This would explain > the difference but is truly a guess since I have not used Pear/PHP. > > David J. > > > > -- > View this message in context: http://postgresql.1045698.n5.nabble.com/Slow-statement-when-using-JDBC-tp3368379p5812174.html > Sent from the PostgreSQL - jdbc mailing list archive at Nabble.com. > > > -- > Sent via pgsql-jdbc mailing list (pgsql-jdbc@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-jdbc
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