Named queries have some nice properties. They are precompiled and therefore faster than their “normal” counterparts, encourage to use named parameters, make your code easier to read and avoid messing up your code with string concatenated queries. A nice addon is, that named queries are validated during the creation of the persistence unit. If you have a unit test (see unit test db schema and named queries), checking whether the entities represent a valid DB Schema, the named queries are validated, too. So, there will be syntactical as well as some static analysis (e.g. “exist all referenced entities?”) during the test phase, before your application is even packaged.