Hi,

I'm trying to upgrade our Postgresql 8.1.18 to 9.x using Slony 1.2.21. 
We have PostgreSQL 8.1.18 server&client on CentOS 5 i386 . And also,We 
have installed PostgreSQL 9.0.12 server&client on the same machine (with 
different port),works perfectly. I want to replicate our 8.x database to 
9.x database and then removing old version of PostgreSQL. Is there a way 
to do this replication on the same host via slony1 ? If there is, please 
explain with a sample .
If there is not a way ,could you please give me another idea to upgrade 
PostgreSQL 8.1.18 to 9.x with minimal downtime ?

Thank You