#include <db_cxx.h> int DbEnv::lock_id_free(u_int32_t id);
         The DbEnv::lock_id_free() method frees a locker ID allocated by the
         DbEnv::lock_id()  method.
    
         The DbEnv::lock_id_free() 
            
            
                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 DbEnv::lock_id_free() 
            
            
                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: