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Berkeley DB Reference Guide:
  Upgrading Berkeley DB Applications

### Release 3.1: DB_ENV->set_tx_recover

The redo parameter of the function passed to DB_ENV->set_tx_recover used to be an integer set to any one of a number of #defined values. In the 3.1 release of Berkeley DB, the redo parameter has been replaced by the op parameter which is an enumerated type of type db_recops.

If your application calls DB_ENV->set_tx_recover, then find the function referred to by the call. Replace the flag values in that function as follows:

Previous flag | Berkeley DB 3.1 version flag
--- | ---
TXN_BACKWARD_ROLL | DB_TXN_BACKWARD_ROLL
TXN_FORWARD_ROLL | DB_TXN_FORWARD_ROLL
TXN_OPENFILES | DB_TXN_OPENFILES
TXN_REDO | DB_TXN_FORWARD_ROLL
TXN_UNDO | DB_TXN_ABORT

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