[PERFORM] PgPool II configuration with PostgreSQL 8.4

[Tatsuo Ishii]

I am trying to have synchronous master-master replication in PostgreSQL8.4 using PgPool II. I am not able to configure PgPool on the system, it gives me an error, libpq is not installed or libpq is old.
I have tried the command , ./configure -with-pgsql = PostgreSQL dir -with-pgsql-libdir = PostgreSQL dir/lib/
But still could not resolve the issue.

What are the exact error messages? What kind of platform are you
using? What pgpool-II version?
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

[Rosser Schwarz]

I am trying to have synchronous master-master replication in PostgreSQL8.4
using PgPool II. I am not able to configure PgPool on the system, it gives
me an error, libpq is not installed or libpq is old.

(FYI: This topic is probably more germane to the -ADMIN list, or at least
-GENERAL, than it is to -PERFORM.)

Is there a particular reason you're building pgpool, rather than installing
it via your distribution's package manager? Most distributions have it
available these days. (At a minimum, any distribution that's widely-used
and well-enough understood to warrant hosting something as critical as your
RDBMS should have it.)

FWIW, I'm successfully using pgpool-II against a pair of 8.4 instances (in
the connection pool mode, not replication, and all installed from the PGDG
RPM repository). I'm also using Bucardo (in its multi-master/swap mode) to
handle the replication, as suggested by someone else down-thread. So
there's an existence proof that it *can* work.

Finally, when PostgreSQL is installed, libpq.so.N is usually put under
/usr/lib(64)/, not under the postgres install directory. Your distribution
should have a postgresql-devel package available which will provide a
pg_config command that can be used to pass the *actual* installed locations
to a configure invocation, as in:

./configure --with-pgsql-libdir=`pg_config --libdir`...

rls

[Kamlesh Kumar]

I am trying to have synchronous master-master replication in PostgreSQL8.4 using PgPool II. I am not able to configure PgPool on the system, it gives me an error, libpq is not installed or libpq is old.
(FYI: This topic is probably more germane to the -ADMIN list, or at least -GENERAL, than it is to -PERFORM.)
Is there a particular reason you're building pgpool, rather than installing it via your distribution's package manager? Most distributions have it available these days. (At a minimum, any distribution that's widely-used and well-enough understood to warrant hosting something as critical as your RDBMS should have it.)
FWIW, I'm successfully using pgpool-II against a pair of 8.4 instances (in the connection pool mode, not replication, and all installed from the PGDG RPM repository). I'm also using Bucardo (in its multi-master/swap mode) to handle the replication, as suggested by someone else down-thread. So there's an existence proof that it *can* work.
./configure --with-pgsql-libdir=`pg_config --libdir`...
rls
--
:wq

Just use this command
./configure --with-pgsql-libdir=/usr/lib(directory of lib folder in PostgreSQL installation folder) folder --with-pgsql-includedir=path-to-the-dir-where-libpq-fe.h-exists