https://github.com/hibernate/hibernate-orm/commit/188c05cc333dec0fe3edfefd8f27fe19b63c702a
Fetching only user_sequences instead of all_sequences in Oracle8iDialect is a breaking change for many application.
Hibernate-core is updated with spring-boot-dependencies update from 2.2.6 to 2.2.7.

Usually, user creating DB resources (sequences) is admin even if flyway/liquibase is used then user creating the DB resources is different from the DB user running the application.

With Spring config spring.jpa.hibernate.ddl-auto=validate the startup of application fails as it cannot find the user_sequences which is owned by other users.