Since the game's original release, there has been an Xbox Live update for The Elder Scrolls 4: Oblivion. If you wish to use the glitches, do not download it. It patches a lot of glitches, including the "Duplicate items" and "Infinite gold" type glitches. You can delete all patches for the game by using the "Clear hard drive cache" code for the Xbox 360.
This trick requires access to Arcane University, a Chameleon spell, two rings, a necklace/amulet, any two pieces of armor (preferably a helmet and shield; you could use any armor for this, but you may want to enchant them with defensive magic later), five Grand Soul Gems with Grand Souls in them, and 8,000 gold. Go to the Chironasium (enchanting section) in Arcane University. Go to an enchanting stand and enchant the necklace, rings, and armor with a Chameleon spell using the Grand Soul Gems. Each enchantment gives you 20% Chameleon effect, so all five enchantments will make you 100% Chameleon, which is not only invisible but also allows you to attack, steal, open, and pick-up without being revealed. You can now steal from a shop without the shopkeepers doing anything. Your enemies will also just stand still unable to attack, allowing you to go into Sneak mode and attack for 4x to 6x damage, and pickpocket without consequence (except on guards who can catch you if you fail, but still cannot attack you if you resist arrest). -From: andre.morgan
Equip a bow and any set of arrows, then draw your bow back. While it is drawn back, press B to go to the inventory screen. Select the arrows that you are using, then go to the item to be duplicated. Press X to drop the item, then leave the equipment screen and resume the game. The item that you dropped will be duplicated. You can pick up all the duplicates and use or sell them. The amount of copies of an item you make depends on how many arrows you have equipped. For example, 10 arrows allows 10 copies. This works with most, but not all, items and weapons. Note: Do not try to duplicate more than 250 copies of an item or the game may freeze.
Duplicate items after game update
Before you update the game, you must save 100 times with 100 duplicated items that are either armor, weapons, potions, or ingredients. Then, place 15 paint brushes in the air, and stack them on top of other, but space them so that you can stand on them. You must not use the duplicated items, only the original. After you do that, stand on the tallest one, and save 100 times on it. Turn off the Xbox 360. Turn it back on, then update the game, and load the saved game file. You should be still floating in the air with the paint brushes. The copied items should also be there. If they are, you can use the glitches. Note: You cannot do this if you already updated the game before doing this.
Use the following trick for duplication or a permanent enchantment. You can duplicate a drop-able item, and if that item is equipable with constant effect enchantments you can make them permanent. However, the item once made permanent cannot be re-equipped, but each enchanted item is different. You can use the "Duplicate items" trick to make as many as desired, then sell them. Use the "Duplicate items" trick with a bow an arrows to duplicate the items to make permanent. Equip one of the items you want to make permanent. There must be an unequipped version still in your inventory for this to work. Use the "Duplicate items" trick again; however, drop the unequipped version of the item you have equipped and want to make permanent. The equipped one and the others will drop and you will never be able to equip that item again, but if you check your stats the items bonuses will be permanent. You can duplicate anything that can be dropped, including Grand Soul Gems with Grand Souls captured.
This trick only works with wearable items. Take any wearable item with a magical enchantment that you wish to make permanent and use the "Duplicate items" trick to duplicate it twice so that you have two of that item. Pick up the item and equip one. While you are wearing that item, duplicate the one you are not wearing by at least four. Note: The number of arrows used determines how many copies are made. Both items will drop on the ground in stacks of two. You will now no longer be wearing that item, but will still have its effects. Note: These effects are permanent. Do not attempt this with any item with an effect you may want to remove later, such as Water Walking, Night Eye, etc.
Use the "Duplicate items" trick on a potion of strong health. Repeat the duplication to get the desired amount of potions. Open the inventory screen and go to the strong potion of health. Hold Y and quick link it to one of the Analog-stick directions. When you are low on health, just tap the hotkey direction to use a potion. When running low on health potions, repeat the duplication process.
Use the "Duplicate items" trick on a Soul Gem. Pick them all up. When an item is on low charge you can recharge it back to full without wasting money on Soul Gems or having to bother with soul trapping.
Go to the Talos Plaza District of Imperial City and find a house owned by a man named Dorian (Dorian's House) in the southeast section of the district. Break into his house and find him. When he tells you to leave, kill him. Do not press X to loot him and take all. Instead, take each item individually, finishing with the gold, which will not run out once it hits 8 pieces. Just keep selecting the gold he is carrying and keep pressing A as usual. Do this repeatedly, and the number of gold pieces remaining will freeze when it gets down to 8 gold pieces. It will not go any lower, but will just keep giving you as much gold as desired. Note: After you break in and he tells you to get out, talk to him. Go to "Persuade" and bribe him a lot. After that, kill him. He will now have more money to loot, which makes it easier to get more faster.
Note: To get infinite gold from Dorian easier, use the following trick. First, bribe him until you cannot do so anymore. Then, hit him with your weakest weapon, preferably your fists. Then, quickly hold Block and press A to yield to him. Because he is your friend, he will stop fighting. Then, talk to him again. His relationship will have dropped because you hit him, allowing you to bribe him more. Make sure you do not hit him too much or he will run away. Once his health gets low, the guards will probably charge you. After spending your time or paying them, go back to his house. His health will still be low from your attacks. Wait exactly 24 hours and his health will be reset. Repeat the entire process to get the desired amount of gold. Once you select the money from his pocket it will not go away, leaving you with unlimited money.
Go to the Talos Plaza District of Imperial City and find Dorian in his house. Talk to him and select the Speechcraft icon to learn that he likes Boast and Coerce and dislikes Admire and Joke. Instead of making him like you, make him hate you. Bribe him until around 60, then make him hate you. Keep repeating this as long as desired. Note: The more you do this, the quicker it will be to increase your money. Kill him but do not let him run, etc. or he will contact the guards. Search him and take all his possessions except for his money. Exit the search screen and re-enter it. Then, keep pressing A on his money to retake it without it disappearing.
This trick requires a horse and an expensive weapon, the more expensive the better. Get on your horse and fast travel to Kvatch. Once there, equip your most expensive weapon and travel until you find a little camp with citizens around on the road to Kvatch. Talk to the female Orc merchant while on your horse and sell her your equipped sword. The message "You cannot unequip this item" will appear, but it will still give you the money. You can do this as many times as desired for 200 GP each time. This only works with your equipped sword; any other items will be sold as usual.
Become a vampire, then seek the Mages Guild help in Arcane University. You will be sent to Skingard to talk to the count. The count will tell you who to seek out in order to get the cure. Complete this quest, and after giving the Counts' wife the potion, he will want to wait a day before he will talk to you again. After that day, when you talk to him he will reward you with 500 gold. However, you can keep talking to him and selecting "Reward" each time. You will be given 500 gold each time you talk to him, even if you leave and come back. Repeat this as many times as desired to get an unlimited amount of gold. Note: When you do go back make sure you select his room lock and bribe him fully so that the guards do not get called. Also, complete this task before the mage's second or third task because after that the Count of Skingard will not talk to you.
When a woman approaches you in the Imperial City and asks you to see a man, go to this house. He will tell you that he and his group are vampire hunters. Follow the Virtuous Order quest line and you will find out the man you are hunting is not a vampire. Do not kill him. Talk to him and he will say that the man that sent you is actually the vampire. Go to the bookstore. The man will tell you about a cave. Travel there and kill all the vampires and take their vampire dust. Once you have killed the main vampire, return to the Imperial City. You will be rewarded with a ring, but he will also tell you that the order will compensate you for every vampire that you kill. All you need for proof is vampire dust. Use the "Duplicate items" trick on the vampire dust to get as many as desired. Keep talking to the man about vampires and he will keep rewarding you as long as you have enough vampire dust. This results in 250 gold for each vampire dust you have.
Use the "Duplicate items" trick inside a store. Make sure the item you duplicate is worth a lot of gold. Sell all but one of the item that was duplicated, then repeat the process as many times as desired. It is possible to make up to 50,000 gold in a few minutes.
This trick requires a Black Bow, a Bow, and two different kinds of Bows (for example Steel and Iron). Also, the "Knight Of The White Stallion" quest must have been successfully completed by talking to the male in the castle of Leyawijn. After completing the quest, you can sell your Black Bow to the male in the castle of Leyawijn. He is one of the court. Every bow will give you 100 gold. Save your game because if you hit the male by accident the guards will attack you. Stand next to the male so that you can speak with him. Use the "Duplicate items" trick to duplicate your bow next to the male (when he is sitting in his throne). Pick up all the duplicated bows. When he says that you are over numbered you can continue picking up more bows. After picking up every bow, throw one on the ground (to make sure you do not sell all of your bows). Speak with the male and sell your bows. When you choose one time for yes, you can continue by pressing A. It is possible to sell 125 bows for 12,500 gold in five minutes.