> 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