'hibernate.dialect' must be set when no Connection available error

Question

I am getting the following error when using Hibernate:

\'hibernate.dialect\' must be set when no Connection available

And I am using a datasource fo

Answer 1

You need to set the property

hibernate.dialect

In the hibernate (persistence.xml or bean declaration) configuration, the value depends on your database, for example:

Postgres: org.hibernate.dialect.PostgreSQL82Dialect
Oracle: org.hibernate.dialect.Oracle10gDialect

All posible options are listen here

For example, a sample persistence.xml looks like:

    ...
    
        ...
        
        ...