Adding an index to a 24×7 production system can be risky. The main concern is whether index creation will block business traffic.
That's where online index creation matters.
What Is Online Index Creation?
Some databases support the ONLINE option when creating indexes:
CREATE INDEX idx_order_date
ON orders(order_date) ONLINE;
In GBase Database(GBase 8s), online index creation is designed to reduce disruption during index maintenance.
Why Does It Matter?
For production systems, online DDL can help:
- Keep business traffic running during index creation
- Reduce maintenance-window requirements
- Add or maintain indexes without unnecessary downtime
- Support 24×7 workloads more safely
For financial, government, and other always-on systems, reducing maintenance disruption can be a major operational advantage.
What Should DBAs Check?
Online doesn't mean “free.”
Before creating an index on a large production table, check:
- Whether the database and index type support online creation
- CPU, memory, and I/O impact
- Expected build time
- Current workload and peak traffic
For large tables, a low-traffic window is still preferable when possible.
The Takeaway
When evaluating an enterprise database, don't look only at query performance. Online DDL capabilities are also part of production readiness.
With GBase Database, CREATE INDEX ... ONLINE provides an option for maintaining indexes while minimizing disruption to business workloads.
24×7 systems need more than fast queries—they need maintenance strategies that keep the business running.
