#include <db.h>

int
DB_ENV->set_lk_priority(DB_ENV *dbenv,
    u_int32_t lockerid, u_int32_t priority);  

Set the priority of the given locker. This value is used when resolving deadlocks, the deadlock resolution algorithm will reject a lock request from a locker with a lower priority before a request from a locker with a higher priority.

By default, all lockers are created with a priority of 100.

The DB_ENV->set_lk_priority() method may be called at any time during the life of the application.

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