Those are all database settings in the rule_values table. Using the following will allow you to disable item and exp loss.
Code:
update rule_values set rule_value = 86 where rule_name = 'Character:DeathExpLossLevel';
update rule_values set rule_value = 3 where rule_name = 'Character:DeathExpLossMultiplier';
update rule_values set rule_value = 86 where rule_name = 'Character:DeathItemLossLevel';
update rule_values set rule_value = 'false' where rule_name = 'Character:UseDeathExpLossMult';