postgresql multiple insert slow
От | Michael L. Hostbaek |
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Тема | postgresql multiple insert slow |
Дата | |
Msg-id | 20040219163238.GD10913@mich2.itxmarket.com обсуждение исходный текст |
Ответы |
Re: postgresql multiple insert slow
|
Список | pgsql-sql |
Hello, I've got a table in an oracle database with approx. 100000 records, that I'd like to put into a table in a postgresql database. (This should be done a couple of times per week) I have written a short perl script, on a server that has remote access to both the oracle database as well as the postgresql database. I am running postgresql 7.4.1 on FreeBSD. My perl script looks something like this: [...] my $sth2 = $cnx2->prepare('SELECT * FROM oracle_table'); my $res2 = $sth2->execute(); while(my($field2,$field5,$field6) = ($sth2->fetchrow_array)) {if(defined($field2)) { my $sth = $cnx->prepare('INSERT INTO the_pg_table(field1, field2) VALUES(?,?)'); my $result = $sth->execute($field2,$field5); $sth->finish; } } [...] I runs fine - and I get no errors - but it takes almost 25 minutes to complete.. I tried running the script while just grabbing the rows from the oracle database and writing to a text file - and then it only takes a couple of minutes .. So it must be the INSERT command that chokes - is there a better way to do it ? Any advise much appreciated. /mich -- Best Regards,Michael L. Hostbaek */ PGP-key available upon request /*
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