Re: batch inserts are "slow"

> conn.setAutoCommit(false);
> pst = conn.prepareStatement("INSERT INTO tmp (...) VALUES (?,?)");
> for (int i = 0; i < len; i++) {
>    pst.setInt(0, 2);
>    pst.setString(1, "xxx");
>    pst.addBatch();
> }
> pst.executeBatch();
> conn.commit();
> 
> This snip takes 1.3 secs in postgresql. How can I lower that?

You're batching them as one transaction, and using a prepared query both 
of which are good.  I guess the next step for a great performance 
improvement is to use the COPY command.  However, you'd have to find out 
how to access that via Java.

I have a nasty suspicion that the release JDBC driver doesn't support it 
and you may have to apply a patch.

Ask on pgsql-jdbc@postgresql.org perhaps.

Chris