Include xml file in Maven

Update pom.xml file as below:-
<build>
...
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
...
</build>

Check Oracle DB CharacterSet

SELECT * FROM nls_database_parameters WHERE parameter = 'NLS_CHARACTERSET'