The following is a list of general restrictions that apply to UltraLiteJ databases:
| Feature | Limitation | 
|---|---|
| Blob size | Maximum 224 bytes. | 
| BlackBerry SD cards | Not supported. | 
| Data types | See Domain interface. | 
| Database access | Only one application can access a database at a time. Simultaneous access is not supported. | 
| Database page size | Minimum 256 bytes, maximum 32 KB. | 
| Row size | Row contents (after possible compression) must not exceed the database page size. | 
| Tables per database | Maximum 32 K. | 
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