"We need a zero-downtime migration, and the sync must be perfect. If we lose a single transaction, it's a critical failure."
That was the challenge from a client. Their legacy Oracle system handled core transaction processing. Any hiccup meant direct financial loss and customer impact.
Their team was skeptical. Their previous PoC with another tool failed because it couldn't handle the real-time load and corrupted data during a schema sync.
Our mission: Prove Helyx could not only keep up but could do it perfectly under pressure.
The 72-Hour PoC:
We set up a replication stream from their production Oracle DB to a new PostgreSQL cloud instance. The goal? Real-time, byte-for-byte identical sync, with live traffic, for a full weekend.
Then, they threw the curveball. 😅
Friday, 4:55 PM: "By the way," they said, "we have a critical patch going live tonight. It includes a DDL change to the transactions table."
My heart sank. A schema change during active replication is the ultimate test. This was the exact scenario that killed their last PoC.
We took a breath and said, "Helyx can handle it."
We ran the patch. The transactions table was altered. For a moment, everyone watched the monitors, waiting for the replication to break, to fall behind, to fail.
It didn't even flinch.
Helyx's schema evolution feature detected the change, adapted the replication stream instantly, and kept flowing without missing a single beat. The client's lead architect looked at me and simply said, "I've never seen that before."
On Monday morning, we presented them with a validation report. 72 hours of continuous operation. Zero replication delay. Zero data loss. 100% integrity.
This is why we built Helyx. For the moments when "good enough" isn't good enough.
If you're evaluating migration tools for a critical system, let's talk.
👉 Learn more about how Helyx handles the toughest replications: visit : www.helyx.quobotic.com
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