How to Upgrade OJS 3.3 to 3.5: Pre-Flight Checks, Upgrade and Rollback
Upgrade OJS 3.3 directly to 3.5: fix pre-flight blockers first, move to PHP 8.2+, merge config, run upgrade.php, switch cron and keep a tested rollback.
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How to Install Open Journal Systems (OJS) 3.5 on Ubuntu 22.04
Install Open Journal Systems 3.5 on Ubuntu 22.04 with Apache, PHP 8.3, MariaDB and Let's Encrypt, plus cron, email and permissions.
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How to Upgrade OJS 3.2.x to 3.3.0-20 on Ubuntu
A tested OJS 3.2 to 3.3 upgrade process: backups, swapping the code, running upgrade.php, and fixing the errors that usually appear.
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