Question 1

How do you ensure zero data loss during migration?

Accepted Answer

We use continuous data replication tools like AWS DMS or pgloader to sync data in real-time. Before the final cutover, we perform strict checksum validation and row-count verifications to guarantee every record is transferred accurately.

Question 2

What is the typical downtime during a database migration?

Accepted Answer

By utilizing live replication and CDC (Change Data Capture) technologies, we reduce actual downtime to just a few minutes or seconds. The only downtime occurs during the final DNS and connection string switchover.

Question 3

Can you migrate databases between different engines, like Oracle to PostgreSQL?

Accepted Answer

Yes, we specialize in heterogeneous migrations. We use advanced schema conversion tools to translate database objects, and then manually refactor complex stored procedures to ensure full compatibility with the target engine.

Question 4

How do you handle security and compliance during transit?

Accepted Answer

All data is encrypted both in transit and at rest using industry-standard TLS and AES-256 protocols. We also establish secure VPN tunnels or dedicated network connections to prevent exposure to the public internet.

Question 5

What happens if the migration fails during the cutover?

Accepted Answer

We design a comprehensive, tested rollback plan for every project. If any critical metric fails during the cutover window, we can instantly revert traffic back to the source database without data loss or extended downtime.

Question 6

Do you support cloud migrations to AWS, Azure, or Google Cloud?

Accepted Answer

Absolutely, we migrate on-premises databases to managed cloud services like AWS RDS, Azure SQL, or Google Cloud SQL. This transition helps reduce administrative overhead and improves scalability.

Question 7

How do you handle very large databases (VLDB) over 10 Terabytes?

Accepted Answer

For extremely large databases, we use physical transport methods or initial backup seeding combined with delta replication. This prevents network bottlenecks and ensures the migration completes within a predictable timeframe.

Question 8

Is post-migration performance tuning included in your service?

Accepted Answer

Yes, post-migration tuning is a core part of our process. We optimize indexes, update statistics, and adjust configuration parameters to ensure your new database runs faster than the old one.

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