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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Aave V3 does not have one oracle address or one universal feed setup. Each market has its own oracle configuration, and each reserve in that market can use a specific price source. To compare deployments, check the market and reserve first, then inspect the reserve’s source, fallback, price denomination and—where relevant—L2 sequencer safeguards.
Why Aave V3 oracle settings differ
Aave’s documentation describes each reserve as being associated with an oracle contract. The market-facing AaveOracle keeps asset-to-source mappings, has a fallback oracle and returns prices in the market’s configured base currency. That makes the reserve, market and network distinct parts of the configuration: the same token can have different source addresses or settings in different markets.
Aave identifies Chainlink Price Feeds and CAPO as primary oracle contract types on production markets. Chainlink feeds provide price observations; CAPO is designed for assets strongly correlated with another asset, such as a wrapped asset tracking an underlying. A reserve’s oracle selection is made through Aave Governance, so settings can change after governance actions.
Which oracle does a particular reserve use?
Start with the precise market instance and reserve asset address. The oracle contract’s getSourceOfAsset(asset) lookup identifies the configured source for that asset. Then inspect that source contract to establish what it is and how it works. A source address alone does not tell you whether it is a Chainlink feed, CAPO, or another supported contract.
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The AaveOracle contract reference documents a fallback oracle as well. Read getFallbackOracle() to identify the configured fallback, then establish its behavior for the specific deployment. The core implementation uses Chainlink aggregators as its first source and forwards to the fallback if an aggregator answer is nonpositive; verify the implementation and version deployed for the market before relying on that low-level behavior.
A market-data record may also expose a reserve’s usdOracleAddress. Treat that as a useful market-data field, not automatic proof of every underlying source or of the fallback relationship configured in AaveOracle.
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Why prices from different markets may not be directly comparable
AaveOracle returns prices in the market’s BASE_CURRENCY, in the unit specified by BASE_CURRENCY_UNIT. Check both before comparing raw returned values across markets. A numerical difference may reflect a different denomination or unit rather than a different asset valuation.
| Configuration detail | What to check | Why it matters |
|---|---|---|
| Market identity | Network, chain ID and market name | Ethereum Core and Ethereum Prime are separate markets; a network name alone does not identify the market instance. |
| Reserve identity | Asset address on that network | Token symbols are not a reliable substitute for identifying the reserve contract. |
| Price source | getSourceOfAsset(asset) and the source contract |
Establishes the configured source and what type of contract it is. |
| Fallback | getFallbackOracle() and the fallback contract’s behavior |
Identifies the fallback configured for that AaveOracle instance. |
| Denomination | BASE_CURRENCY and BASE_CURRENCY_UNIT |
Determines how to interpret and compare returned values. |
| L2 safeguards | Whether a sentinel applies, plus its sequencer oracle and configuration | Can affect borrowing and recovery behavior after sequencer downtime. |
| Authority and history | Current role holders and governance actions | Shows who can make changes at contract level and how the current configuration was selected. |
What changes on an L2
Some L2 markets add a PriceOracleSentinel layer related to sequencer health. Aave documents that the sentinel can disable borrowing in specified circumstances and allow a grace period after sequencer recovery, during which positions can be made healthy. This is an operational safeguard alongside price-source configuration; it is not itself a replacement for checking the reserve’s price source.
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Do not assume every L2 deployment has identical sentinel settings or even the same relevant addresses. For the market in question, verify whether a sentinel is configured, which sequencer oracle it uses, and the applicable recovery behavior. The sentinel’s sequencer-oracle setting is updated through a Pool Admin-only method.
Who can change oracle configuration?
Aave describes reserve-oracle selection as a governance decision. At the contract level, the documented setAssetSources and setFallbackOracle methods are restricted to POOL_ADMIN or ASSET_LISTING_ADMIN. Governance authority and the contract caller permission are related but distinct: inspect both the governance history and the access-control configuration for the market.
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Aave’s ACL documentation says deployers have resigned their POOL_ADMIN roles and that Pool Admin instances across V3 networks are governed by Guardians multisigs or Governance Bridge executors. Do not infer identical role holders across networks; check the current role configuration and relevant governance actions for the deployment you are comparing.
A practical comparison checklist
- Identify each instance. Record the network, chain ID, market name and reserve asset address. Do not compare an Ethereum Core market with Ethereum Prime as though the market identity were interchangeable.
- Read the reserve’s source. On each market’s AaveOracle, inspect
getSourceOfAsset(asset), then identify and inspect the returned source contract. - Check the fallback. Read
getFallbackOracle()on each AaveOracle and verify the fallback contract’s behavior in that deployment. - Normalize the denomination. Record
BASE_CURRENCYandBASE_CURRENCY_UNITbefore comparing returned prices. - Check L2 health controls. Where applicable, identify the PriceOracleSentinel and its sequencer-oracle configuration, including recovery behavior.
- Verify who can change settings. Inspect current access-control roles and governance actions instead of assuming that the same administrators or history apply everywhere.
These checks establish the live configuration for the specific market and reserve. Oracle addresses, feed versions, heartbeat and deviation parameters, fallback behavior, and sentinel settings should not be generalized across deployments; they require current, deployment-specific contract inspection.
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