| From: | "emergency(dot)shower(at)gmail(dot)com" <emergency(dot)shower(at)gmail(dot)com> |
|---|---|
| To: | Kris Jurka <books(at)ejurka(dot)com> |
| Cc: | pgsql-jdbc(at)postgresql(dot)org |
| Subject: | Re: Severe performance degradation when using the 9.2-1000 JDBC 4 driver |
| Date: | 2012-10-08 07:49:52 |
| Message-ID: | CACLs3uB7d=ff3NpDznJ40t5oa9FBq28qXVWpmCK7W_tfx=BMYg@mail.gmail.com |
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| Lists: | pgsql-jdbc |
Hi Kris,
On Sat, Oct 6, 2012 at 2:43 AM, Kris Jurka <books(at)ejurka(dot)com> wrote:
>
> Can you show us the connection URL that you are using?
Other as stated before, only connection URLs with IPv4 Addresses were
involved in our tests.
> Are you using SSL?
No SSL.
> It appears that some of the 9.2 changes may require a DNS lookup that they
> didn't before and you might be getting a timeout there. Any DNS issues on
> your side?
Actually there are two distinct problems:
- a reverse lookup failure with a subdomain in the local network that
contains some of the test hosts, and
- a reverse lookup failure with hosts that are located in our DMZ.
The first seems to be repairable to me, for the second I don't know.
-Alex
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