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Discussion on: What's the most scared you've ever been as a developer?

ricardovfreixo_84 profile image

Back in 2000, fixing the Y2K bug on a big bank while the country was adopting the Euro, we had a migration project. The goal was to fix the Y2K and the project managers decided to do the migration to the Euro at the same time since they had the resources in the field. What can go wrong, right? So we had this huge cobol scripts that was suposed to do the exchange. 3 step operation, collect all money from all accounts, exchange the values, and deposit afterwards. So it collects fine, exchanges fine and it breaks. For 4 days no one with account in the bank (and this was a big bank) had available funds to use.