9. Empress
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## 9. Empress

Example 2.5. Example properties for Empress

    openjpa.ConnectionDriverName: empress.jdbc.empressDriver
    openjpa.ConnectionURL: jdbc:empress://SERVER=yourserver;PORT=6322;DATABASE=yourdb

### 9.1. Known issues with Empress

- Empress enforces pessimistic semantics (lock on read) when not using `AllowConcurrentRead` property (which bypasses row locking) for `EmpressDictionary`.

- Only the category 2 non-local driver is supported.

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