Hi,
We have recently tried to upgrade to Jira Service Management 10.3.0 LTS from 5.9.1.
I have seen that the support for Postgresql 14 is deprecated but it should work.
the scénario that we had in mind was upgrade jira first then Postgres later to go to PG 15.
for more information we are using two nodes for jira and PG pool for database clustering.
after finishing the upgrade we couldn't connect to the old database and jira was trying to create a new one (create a new database for a new instance).
we double checked everything and the issue remained.
finally we did a rollback to the previous version (5.9.1) and did the upgrade to 5.12.16(Latest TLS).
and this time it worked without an issue.
we will try to upgrade to PG15 and see what happens next.
Best regards,
Abdelmalek
