Re: JVM crash when select count(*) on large table through JDBC
От | Andres Olarte |
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Тема | Re: JVM crash when select count(*) on large table through JDBC |
Дата | |
Msg-id | 3fccaa690802221219u7c7fd66bk4cc152cb8819e26b@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: JVM crash when select count(*) on large table through JDBC (Dave Cramer <pg@fastcrypt.com>) |
Ответы |
Re: JVM crash when select count(*) on large table through
JDBC
|
Список | pgsql-jdbc |
Just did a quick test with synthetic data (20M rows 3 columns: serial, timestamp, and text). And it worked ok both on Java (with driver postgresql-8.1-407.jdbc3.jar) and PgAdmin. Perhaps you could try to build a test case to expose the problem? On Fri, Feb 22, 2008 at 1:30 PM, Dave Cramer <pg@fastcrypt.com> wrote: > > On 22-Feb-08, at 11:25 AM, Kai Ruhl wrote: > > > Hello, > > > > I have a curious problem, which I would like to know whether somebody > > can reproduce this: From a JVM using JDBC, I issue > > > > select count(*) from big_table > > > > where big table has more than 20 million entries (timestamps and > > numbers). Upon PreparedStatement.executeQuery(), the VM quits, without > > any message. > > > It's my understanding that regardless of what a java program is doing > (aside from calling exit, or jni code) , it should never crash. > > I would say there is a bug in your jvm. > > > > ---------------------------(end of broadcast)--------------------------- > TIP 6: explain analyze is your friend >
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