Berkeley DB

Database Limits

The largest database file that Berkeley DB can handle depends on the page size selected by the application. Berkeley DB stores database file page numbers as unsigned 32-bit numbers and database file page sizes as unsigned 16-bit numbers. Using the maximum database page size of 65536, this results in a maximum database file size of 2⁴⁸ (256 terabytes). The minimum database page size is 512 bytes, which results in a minimum maximum database size of 2⁴¹ (2 terabytes).

The largest database file Berkeley DB can support is potentially further limited if the host system does not have filesystem support for files larger than 2³², including the capability to seek to absolute offsets within those files.

The largest key or data item that ...