How to change the alchemy rate

Follow these steps:
1.Open Shard DB.
2.Go to table _RefObjCommon and open it.
3.Search for lucky powder :

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_01 

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_02

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_03

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_04

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_05

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_06

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_07

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_08

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_09

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_10

ITEM_ETC_ARCHEMY_REINFORCE_PROB_UP_A_11

4.Scroll right, till it ends.
5.Notice the "Link" number of each item.
6.Open _RefObjItem
Before you even going to search the numbers, for _RefObjItem, I'll write them for the noobs right down here:

2033

2034

2035

2036

2037

2038

2039

2040

2041

2042

2043

7.Go to number 2033, scroll right, till you come to the params.

Param2	Desc2_128	Param3	Desc3_128	Param4	Desc4_128
840832008	1,2,3,4	168101125	5,6,7,8	168101125	9,10,11,12

param2 "840832008", is to say to gameserver, what the item should do, so plussing.
"1,2,3,4" ~ "168101125" means the plus chance, "16,81%" to plus "1,2,3,4",
and same for 5,6,7,8 + 9,10,11,12 , up to higher +13, it decrase by 2, so we have only 9% upchance.

To make it 2x, set 168101125 to 326202210 for every lucky powder and restart gameserver.