hibernate could not get next sequence value

Question

i have gwt application connect to postgres DB at the backend, and a java class \'Judgement\' mapping the table \'judgements\' in DB, when i tried to persistent a judgement i

Answer 1

I would also like to add a few notes about a MySQL-to-PostgreSQL migration:

1. In your DDL, in the object naming prefer the use of '_' (underscore) character for word separation to the camel case convention. The latter works fine in MySQL but brings a lot of issues in PostgreSQL.
2. The IDENTITY strategy for @GeneratedValue annotation in your model class-identity fields works fine for PostgreSQLDialect in hibernate 3.2 and superior. Also, The AUTO strategy is the typical setting for MySQLDialect.
3. If you annotate your model classes with @Table and set a literal value to these equal to the table name, make sure you did create the tables to be stored under public schema.

That's as far as I remember now, hope these tips can spare you a few minutes of trial and error fiddling!