Why use DBAssure for PostgreSQL migration validation?
Faster, safer cutovers with auditable evidence
Our database migration validation service (DBAssure) helps organisations migrate from Oracle, SQL Server and other proprietary databases to PostgreSQL with validated parity, reducing risk before cutover.
With DBAssure, you can:
- Validate query parity for critical workloads before go-live
- Confirm database integrity using scalable parity checks
- Surface migration defects early through automated mismatch triage
- Retire licenses sooner to reduce total cost of ownership and vendor dependency
This leads to higher confidence, fewer late surprises, faster approval and cutover decisions.
How DBAssure works
Parallel-run validation built for production constraints
1. Capture (non-blocking)
Collect query signals and context with minimal overhead, without adding user latency.
2. Align (continuous)
Maintain a migrated PostgreSQL copy aligned to the source using standard cloud migration and CDC patterns
3. Validate (asynchronous bursts)
Run scheduled validation bursts to compare outputs for selected workloads and confirm parity at scale
4. Evidence (cutover-ready)
Produce dashboards and audit-ready evidence packs for risk, operations, and change approval.
Query parity validated
For selected and sampled queries, our DBAssure service compares outputs between source and PostgreSQL using agreed normalisation rules (ordering, numeric tolerance, time zones, collation).
Database integrity validated
DB parity validation confirms consistency using scalable checks (row counts, chunk hashes, invariants, and drift detection), suitable for large datasets.
What’s included in our DBAssure service:
- Capture configuration (DB-native or application-level) with sampling and safety limits
- PostgreSQL alignment support (base load, CDC integration patterns)
- Query parity validation pipeline (async replay, compare, mismatch classification)
- DB parity validation (counts, hashes, invariants, drift reporting)
- Dashboards, evidence packs, and cutover readiness gates
- Security controls (redaction options, retention controls, least privilege guidance)
- Runbooks for operations, rollback, and assurance sign-off
Designed for regulated, risk-aware organisations
DBAssure is built for regulated environments where cutovers require provable controls:
- Compatible with common migration and CDC approaches (on-prem, AWS, hybrid)
- Aligned to enterprise security, privacy, and operational resilience expectations
- Supports outcomes-led delivery models when budgets are constrained
- Prioritises earlier license retirement and reduced vendor lock-in
Typical buyers include:
 CIO/CTO |
 CISO |
 Heads of Data Platforms |
 Risk Leaders |
Prove migration readiness with measurable outcomes
DBAssure is designed to make progress measurable. We track and report:
- Parity pass rate and mismatch trends by workload
- Drift indicators across high-risk tables and domains
- Validation coverage (queries, tables, and critical paths)
- Time-to-triage and time-to-remediation for defects
- Readiness gates for change boards and cutover approvals
DBAssure Engagement Model
Established in 8 to 12 weeks, then run through migration waves:
Week 1-2:
Week 3–6:
Week 7–12:
- Does DBAssure impact production performance?
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Capture is designed to be non-blocking with strict sampling and safety limits. Validation runs asynchronously.
- Does DBAssure validate all queries?
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It prioritises critical workloads and sampled production patterns. Full coverage is not realistic or necessary.
- What databases are supported?
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DBAssure is designed for proprietary exits to PostgreSQL. Common sources include SQL Server, Oracle, and Sybase.
- Do you provide evidence for auditors and risk teams?
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Yes. Dashboards plus audit-ready evidence packs and cutover readiness gates are core outputs.
- Can DBAssure work with our existing migration tooling?
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Yes. It is designed to integrate with common CDC and migration toolchains rather than replace them.
- What do we need to provide?
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Access to capture signals, a PostgreSQL target environment, and agreement on parity rules and coverage.