#include <db_cxx.h> int DbTxn::set_priority(u_int32_t priority);
         The DbTxn::set_priority() method sets the
         priority for the transaction. The deadlock detector will reject
         lock requests from lower priority transactions before those from
         higher priority transactions.
    
By default, all transactions are created with a priority of 100.
         The DbTxn::set_priority() method may be
         called at any time during the life of the transaction.
    
         The DbTxn::set_priority() 
            
            
                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.
            
        
    
             The DbTxn::set_priority() 
            
            
                method may fail and throw a DbException 
                exception, encapsulating one of the following non-zero errors, or return one
                of the following non-zero errors: