Gas fees on Shibarium, like other EVM-compatible chains, fluctuate based on network congestion and transaction complexity. Underestimating gas can cause delays or failed transactions.

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Gas Estimation Process

1

Estimate Gas Consumption

Use the eth_estimateGas RPC method to estimate the gas units required for your transaction.
const gasEstimate = await web3.eth.estimateGas({
  from: "0xYourAddress",
  to: "0xContractAddress",
  data: "0xFunctionCallData",
});
console.log(`Estimated Gas: ${gasEstimate}`);
For contract methods, use the contract’s estimateGas function for more accuracy:
const gasEstimate = await myContract.methods.myMethod(123).estimateGas({
  from: '0xYourAddress'
});
console.log(`Gas Estimate: ${gasEstimate}`);
2

Fetch Current Gas Prices

Query the network’s gas price using eth_gasPrice or eth_feeHistory for EIP-1559-compatible fee structures.
const gasPrice = await web3.eth.getGasPrice();
console.log(`Current Gas Price: ${gasPrice}`);
3

Add a Buffer

Add a 10–20% buffer to your gas estimate to account for network fluctuations.
const gasLimitWithBuffer = Math.ceil(gasEstimate * 1.2); // 20% buffer
4

Submit the Transaction

Use the calculated gas values when sending your transaction.
const tx = await web3.eth.sendTransaction({
  from: "0xYourAddress",
  to: "0xContractAddress",
  value: web3.utils.toWei("0.1", "ether"),
  gas: gasLimitWithBuffer,
  gasPrice: gasPrice,
});
console.log(`Transaction Hash: ${tx.transactionHash}`);
For advanced use cases, such as batch processing or dynamic fee adjustments, use eth_feeHistory, monitor mempool activity, or leverage third-party APIs for predictive fee estimation.

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Troubleshooting Stuck Transactions

A common issue is transactions getting stuck due to low gas fees. If your transaction is pending for too long, you must resubmit it with the same nonce and a higher gas price.
Do not submit a new transaction with a different nonce. Only the original nonce will be processed until resolved.

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How to Resubmit a Stuck Transaction

const tx = {
  nonce: web3.utils.toHex(5), // Use the stuck transaction's nonce
  to: '0xContractAddress',
  value: web3.utils.toWei('0.1', 'ether'),
  gas: web3.utils.toHex(21000),
  gasPrice: web3.utils.toHex(web3.utils.toWei('50', 'gwei')) // Set a higher gas price
};

const signedTx = await web3.eth.accounts.signTransaction(tx, 'PRIVATE_KEY');
const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction);
console.log(`Transaction Hash: ${receipt.transactionHash}`);
With the right approach, you can ensure smooth and cost-effective operations on Shibarium.