4. org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract java.util.List com.roman.demo.ProgrammerRepo.ProgrammerRepo.findN(java.lang.String)

 Solution : 

Add below query annotation 

@Query(value="SELECT * FROM programmer WHERE name = ?1", nativeQuery = true)

instead of

@Query("SELECT * FROM programmer WHERE name = ?1")

3. Non supported character set (add orai18n.jar in your classpath): AR8MSWIN1256 (MAVEN repository issue, specially occur at use hibernate default method)

 Solution:

Keep your earlier jdbc dependency and add one more dependency, which I have mentioned below -

             <dependency>

<groupId>com.oracle.ojdbc</groupId>

<artifactId>orai18n</artifactId>

<version>19.3.0.0</version>

</dependency>