It's not possible to test all DB combinations simultaneously on our CI as the DatabaseListener in server/tests simply starts all DBs before the Infinispan servers used in our tests. Consequently, the CI agent resources will eventually be exhausted as we continue to add more DB testing combinations. To prevent this, we have agreed that the open source DBs we test against (H2, Mysql, Postgres) should be built on the default server/tests build and the other DBs (MSSQL, Oracle) should be executed in a separate GH action workflow.