Since HHH-11709 was fixed, negative sequence values can be used.
However, Oracle requires the following SEQUENCE declaration when the start value is negative, but the increment size is positive:
14:59:56,395 DEBUG SQL:92 - create sequence POS_TWO_SEQ start with -5 increment by 1
14:59:56,395 INFO access:47 - HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@14fa86ae] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
14:59:56,398 WARN ExceptionHandlerLoggedImpl:27 - GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC
Caused by: java.sql.SQLDataException: ORA-04006: START WITH cannot be less than MINVALUE