Migration

Teradata, Oracle and SQL Server: replacing the legacy warehouse

Capacity-bound warehouses cost the most at peak. Elastic compute on the lakehouse changes the economics.

Cover illustration: Teradata, Oracle and SQL Server: replacing the legacy warehouse
Short answer

Replacing Teradata, Oracle or SQL Server with Databricks swaps peak-sized capacity for elastic compute. Data copies easily; the real work is converting procedural logic such as BTEQ, PL/SQL and T-SQL, then reconciling results. Agree matching rules with business owners before conversion starts, so sign-off is fast.

Key takeaways

  • Pay for compute when it runs.
  • Procedural logic is the hard part.
  • Agree matching rules with business owners up front.

Teradata, Oracle and SQL Server warehouses still power many enterprises. Their logic is often buried in stored procedures, BTEQ scripts and PL/SQL.

The economics

Traditional warehouses are sized for peak demand, so you pay for capacity even when it is idle. Elastic and serverless compute on Databricks scales with the work.

The hard part is logic, not data

Copying data is straightforward. Converting decades of procedural logic is not. We use LakeBridge and our accelerators for conversion, then review and test every critical path.

Reconciliation decides success

Users trust the new platform only when numbers match. We agree matching rules with business owners up front and report progress table by table.

Beyond like-for-like

Once migrated, the same data supports streaming, ML and agents. That is where the long-term value of the move comes from.

About the author

NeuralShore Engineering, Databricks delivery team

Databricks architects, data engineers and AI engineers at NeuralShore, DLytica’s Databricks delivery company. Leadership comes from IBM data and AI architecture.

FAQ

Frequently asked questions

Is Databricks cheaper than Teradata or Oracle?

Often, because compute scales with use instead of being sized for peak. We model cost on your real workloads.

What is the hardest part of a warehouse migration?

Converting procedural logic such as BTEQ, PL/SQL and T-SQL, and proving results match.

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