#include <db_cxx.h> int DbMpoolFile::close(u_int32_t flags);
         The DbMpoolFile::close() method closes the source file indicated by
         the DbMpoolFile structure.  Calling 
         DbMpoolFile::close() does not imply a call to
         DbMpoolFile::sync();
         that is, no pages are written to the source file as as a result of
         calling DbMpoolFile::close.().
     
If the DbMpoolFile was temporary, any underlying files created for this DbMpoolFile will be removed.
         After DbMpoolFile::close() has been called, regardless of its
         return, the DbMpoolFile  handle may not
         be accessed again.
    
         The DbMpoolFile::close() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.