Meanwhile we found what cause this issue.

In version hibernate-core 5.4.18 were reverted changes which limits getting sequence from db to “select * from all_sequences”.

Somehow connection timeout is not applied to our hikari datasource. Hibernate defualt 10s (i think) is applied while getting all sequences from badly created oracle user took almost 47s.

You can close this issue and we need to figure out why is our timeout not applied.

Thank you

David