#include <db.h>

int
DB_LOGC->close(DB_LOGC *cursor, u_int32_t flags);  

The DB_LOGC->close() method discards the log cursor. After DB_LOGC->close() has been called, regardless of its return, the cursor handle may not be used again.

The DB_LOGC->close() method returns a non-zero error value on failure and 0 on success.