The required platform for OpenACS 4.6 is the same as 4.5, with the exception of OpenFTS. OpenACS 4.6 and later require OpenFTS 0.3.2 for full text search on PostGreSQL. If you have OpenFTS 0.2, you'll need to upgrade.
If upgrading from 4.4, you need to manually run acs-kernel/sql/postgres/upgrade-4.4-4.5.sql. See Bug #632
Make a Backup. Back up the database and file system (see ???).
OPTIONAL: Upgrade OpenFTS. Section , “Upgrading OpenFTS from 0.2 to 0.3.2”
Stop the server
[root root]# svc -d /service/$OPENACS_SERVICE_NAME
Upgrade the file system. Section , “Upgrading the OpenACS files”
Start the server
[root root]# svc -u /service/$OPENACS_SERVICE_NAME
Browse to the package manager, http://yourserver/acs-admin/apm.
Click Install packages.
Select the packages you want to install. This should be everything that says upgrade, plus any new packages you want. It's safest to upgrade the kernel by itself, and then come back and upgrade the rest of the desired packages in a second pass.
On the next screen, click
When prompted, restart the server:
[root root]# restart-aolserver $OPENACS_SERVICE_NAME
Wait a minute, then browse to the package manager, http://yourserver/acs-admin/apm.
Check that the kernel upgrade worked by clicking All and making sure that acs-kernel version is 5.5.0.
Rollback. If anything goes wrong, roll back to the backup snapshot.