A weird error when using pg74.216.jdbc3.jar

Hi,

it's a follow-up of bug #3999 ( http://archives.postgresql.org/pgsql-bugs/2008-02/msg00268.php )

We have a homemade application (tomcat 4.1.31 and jdk1.5.0_06 on RHES 3/x86_64) which uses pg74.216.jdbc3.jar.

Sometimes, on our database, we have some PANIC after a weird error :

ERROR: invalid string enlargement request size 1358954492
WARNING: AbortTransaction and not in in-progress state
ERROR: could not send data to client: Broken pipe
PANIC: error during error recovery, giving up

Here is a excerpt from the tcpdump log (only incoming cnx) :

000000BA 51 00 00 00 24 73 65 74 20 63 6c 69 65 6e 74 5f Q...$set client_
000000CA 65 6e 63 6f 64 69 6e 67 20 3d 20 27 55 4e 49 43 encoding = 'UNIC
000000DA 4f 44 45 27 00 ODE'.
000000DF 58 51 00 00 00 04 XQ....

We noticed than the 58 51 couple of bytes is unusual. It seems to
indicate a try to finish connection and then to reuse it for a query.

We would like to know if it's a known bug of the jdbc connector for
example, or if we have a problem with our application's code (maybe
doing a close request and a query request on the same connection ?).

Thanks in advance.

--
Thomas Poindessous