Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

How do I revert Postgres 9 back to 8.4?

Posted on 2011-03-02
3
676 Views
Last Modified: 2012-05-11
Experts,

      I need to revert back to Postgres 8.4 version from Postgres 9. What are the steps to accomplish this task. Do I need to do a complete re installation?

Please advise,
Missymadi
0
Comment
Question by:missymadi
3 Comments
 
LVL 39

Expert Comment

by:lcohan
ID: 35019288
I believe the only way is to have new instance 8.4 installed and migrate data to that instance.
0
 
LVL 1

Accepted Solution

by:
mbkirk earned 500 total points
ID: 35023528
Basically, what Icohan says...

it's basically a dump-and-restore.  They're not binary compatible (in either direction).  

Here's dumpall - http://www.enterprisedb.com/docs/en/9.0/pg/app-pg-dumpall.html.  It has an example at the end, but in a nutshell it creates a script that restores the db/schema/data/etc that you can then import to the prior instance using psql.

You have to make sure you're not dependent on 9.0 features. Most people aren't.  But go through the feature lists just to be sure.  
0
 
LVL 4

Expert Comment

by:l4ncel0t
ID: 35053937
Are you sure about the need to go back to 8.4 ?
0

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Best database to use for Maps is PostgreSQL. This is an open source database. Comes as a package with most Linux OS. For more info visit the following site: http://www.postgresql.org/ (http://www.postgresql.org/) This requires some add-o…
Many developers have database experience, but are new to PostgreSQL. It has some truly inspiring capabilities. I have several years' experience with Microsoft's SQL Server. When I began working with MySQL, I wanted a quick-reference to MySQL (htt…
Steps to create a PostgreSQL RDS instance in the Amazon cloud. We will cover some of the default settings and show how to connect to the instance once it is up and running.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question