#include <db.h> int DB_MPOOLFILE->sync(DB_MPOOLFILE *mpf);
The DB_MPOOLFILE->sync()
method writes all modified pages associated with
the DB_MPOOLFILE back to the source file. If any of the
modified pages are pinned (that is, currently in use),
DB_MPOOLFILE->sync()
will ignore them.
The DB_MPOOLFILE->sync()
method returns a non-zero error value on failure and 0 on success.