Advantage of Hibernate over JDBC

Advantage are
1) Hibernate is data base independent, same code will work for all data bases like ORACLE,MySQL ,SQLServer etc.
In case of JDBC query must be data base specific.

2) As Hibernate is set of Objects , you don't need to learn SQL language.
You can treat TABLE as a Object .
In case of JDBC you need to learn SQL.

3) Don't need Query tuning in case of Hibernate. If you use Criteria Quires in Hibernate then hibernate automatically tuned your query and return best result with performance.
In case of JDBC you need to tune your queries.

4) You will get benefit of Cache. Hibernate support two level of cache. First level and 2nd level. So you can store your data into Cache for better performance.
In case of JDBC you need to implement your java cache .