Premium Hosting for next-gen websites
Upgrading OJS: Best Practices for Version Updates
Upgrading OJS is critical for security and features, but it carries risks. Learn how to upgrade from OJS 2.x to 3.x or between minor versions safely.
Real Problem
Institutions delay OJS upgrades for years out of fear. When they finally upgrade, database conflicts and missing plugins often cause the upgrade script to fail mid-way.
Practical Solution
Successful OJS upgrades require strict backups, staging environments, PHP version matching, and following the official upgrade path without skipping major versions.
Why Upgrading Is Non-Negotiable
Older OJS versions are vulnerable to security exploits and malware injections. They also lack modern Crossref integrations and responsive mobile themes.
Upgrading ensures your journal remains indexed properly by Google Scholar and secure from hackers.
The Importance Of The Upgrade Path
You cannot jump directly from OJS 2.4 to OJS 3.4. You must follow the official upgrade path, often stepping through OJS 3.1 or 3.2 first.
Skipping versions will corrupt the database schema and cause unrecoverable errors.
Staging Environments Save Journals
Never upgrade a live journal. Always clone the database and files to a staging subdomain, perform the upgrade there, and verify the data.
If the upgrade fails on staging, your live journal remains completely unaffected.
Post-Upgrade Plugin Checks
After a successful upgrade, many plugins (like QuickSubmit or DOAJ export) will need to be reinstalled or updated via the plugin gallery.
Custom themes built for OJS 2 will not work on OJS 3 and must be redesigned.
Step-by-Step Action Plan
Create a staging copy
Clone your live journal files and database to a safe testing location.
Check the upgrade path
Determine the required intermediate versions for your specific upgrade.
Run the upgrade script
Execute the upgrade via command line (CLI) for better stability on large databases.
Questions People Usually Ask
How long does an OJS upgrade take?
Depending on database size and version gap, it can take anywhere from a few minutes to several hours of processing.
What happens if the OJS upgrade script fails?
You must restore your database and files from the backup immediately. Do not try to run the script again on a partially upgraded database.
Can I keep my old theme after upgrading to OJS 3?
No. OJS 3 uses a completely different templating system. You will need a new responsive theme.
Need professional OJS upgrade services?
StarHost.pk specializes in safely upgrading legacy OJS journals to the latest secure versions.