I'm using jooq v3.11.5 for DATE column in Oracle and it helps me:

<forcedTypes>
    <forcedType>
       <name>TIMESTAMP</name>
       <userType>java.time.LocalDateTime</userType>
       <types>DATE((.*))?</types>
    </forcedType>
</forcedTypes>

with

<javaTimeTypes>true</javaTimeTypes>