A way to achieve these, could be export and import to a old version. Em quarta-feira, 14 de maio de 2025 às 11:31:18 UTC-3, DSpace Community escreveu:
> Hi, > > DSpace doesn't have a process to "downgrade" installations. This process > is not always easy because it does require manually downgrading the > database. > > Since this is a test server, if you don't care able the test data, then > the easiest approach would be to destroy (drop) the existing database & > delete the DSpace 8 installation (warning: This will destroy all your test > data). Then, install DSpace 7.6.3 following the Installation instructions: > https://wiki.lyrasis.org/display/DSDOC7x/Installing+DSpace > > If you *want to keep your test data, *then you'd still need to delete the > DSpace 8 installation. But, instead of destroying the existing database, > you'd have to manually *downgrade* the database to be compatible with > DSpace 7.x. The way you would do that is to *undo* any database migrations > that begin with "V8.0_" (as these were all executed to bring your database > to 8.0 compliance). Those migrations can be found here: > https://github.com/DSpace/DSpace/tree/dspace-8_x/dspace-api/src/main/resources/org/dspace/storage/rdbms/sqlmigration/postgres > > Unfortunately, there's no script or automated way to undo database > migrations. You would literally have to read the migration and figure out > how to undo the changes that it made. *Therefore, before doing anything, > I'd highly recommend backing up your database (in case you make a mistake).* > In the case of DSpace 7.6.x->8.0, it looks like the two "V8.0_" migrations > just created some new database tables, indexes and sequences. So, if you > dropped these, then it should return your database to 7.6.x compliance. > > Finally, I should note that this a scenario where it is useful to create > regular database backups. For example, if you had backup from DSpace > 7.6.x (e.g. from before upgrading to 8.0), then that backup could be used > to more easily revert to DSpace 7.6.3 by just installing a fresh copy of > DSpace 7.6.3 with that database backup, similar to the "Migrating DSpace to > a new server" instructions: > https://wiki.lyrasis.org/display/DSDOC7x/Migrating+DSpace+to+a+new+server > > Tim > On Wednesday, May 14, 2025 at 8:32:08 AM UTC-5 [email protected] wrote: > >> I would like to know the implications or steps particularly regarding >> downgrading DSpace >> I installed DSpace 8 on a test server and would like to downgrade it to >> v7.6.3. Are there any implications particularly regarding the database >> downgrade or mapping >> >> >> Regards >> >> -- All messages to this mailing list should adhere to the Code of Conduct: https://www.lyrasis.org/about/Pages/Code-of-Conduct.aspx --- You received this message because you are subscribed to the Google Groups "DSpace Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/dspace-community/05a5ef28-5573-4a61-abb9-125d7ce0ef62n%40googlegroups.com.
