How to hunt for satoshis in an old Bitcoin Core wallet.dat?

[bitcoinholder]

I have some very very old wallet.dat files and would like to run ord on them to hunt for some rare satoshis there. I referred to this guide: https://docs.ordinals.com/guides/sat-hunting.html but it's not helpful when it comes to old wallets.

Bitcoin Core is running, ord was started and indexed, but I'm stuck here:

ord --index-sats --wallet "" wallet balance
error: JSON-RPC error: RPC error response: RpcError { code: -4, message: "listdescriptors is not available for non-descriptor wallets", data: None }

My Bitcoin Core wallet info is as follows:

./bitcoin-cli getwalletinfo
{
  "walletname": "",
  "walletversion": 10500,
  "format": "bdb",
  "balance": xxxx,
  "unconfirmed_balance": 0.00000000,
  "immature_balance": 0.00000000,
  "txcount": 199,
  "keypoolsize": 1000,
  "paytxfee": 0.00000000,
  "private_keys_enabled": true,
  "avoid_reuse": false,
  "scanning": false,
  "descriptors": false,
  "external_signer": false
}

I was trying to use the "migratewallet" option of bitcoin-cli but it was hanged and apparently my wallet was not migrated.
What else can do? Is it possible to export UTXOs from my wallet and check them manually for rare satoshis?

[bitcoinholder]

I tried one more time to use bitcoin-cli migratewallet and it was done, but still ord cannot read it:

 ./bitcoin-cli -datadir=/mnt/blockstorage/.bitcoin/ migratewallet
{
  "wallet_name": "",
  "backup_path": "/mnt/blockstorage/.bitcoin/wallets/-1678296543.legacy.bak"
}

ord gives this error:

ord --index-sats --wallet "" wallet sats
error: wallet "" contains unexpected output descriptors, and does not appear to be an `ord` wallet, create a new wallet with `ord wallet create`