Migrate Oracle
Move Oracle to the cloud without betting the business
Tessell moves your Oracle database estate to the cloud with phased and reversible migration. No rewrites, no forced cutovers. Production stays live and your data stays in your account until you've proven the switch and choose to make it.
No application rewrites, at any point
Production stays live until you cut over
Runs in your own cloud account, your keys
Lift and shine Oracle
Tessell lifts Oracle to the cloud, and makes it shine
Your Oracle estate moves with no rewrites, and lands fully managed, right-sized, and running better for less, on the cloud you choose.
Proven in production
Oracle estates like yours that made the move
Fortune 250 freight railroad
PROBLEMOracle was the last thing keeping the data center open.
500+Oracle databases migrated
40% lowerInfrastructure costs through consolidation
4ximprovement in server utilization (15% → 60%)
Global Fortune 100 energy company
ProblemOracle scattered across clouds and on-premises, with no single plan.
700+Databases consolidated onto one platform
€1.45Mannual savings
65%Operational efficiency improvement
Global professional services firm
problem33 data centers to exit, on a hard deadline.
4 monthsAhead of schedule
87%Faster provisioning (2 weeks to 30 minutes)
0s RPO / 30s RTOfor critical workloads
US healthcare data platform
ProblemLegacy Oracle versions past their support window.
67.5 TBMigrated with zero disruption
11g → 19cUpgraded in place during migration
12-hourCutover window
The Method
A phased and reversible migration
A proven, low-risk sequence refined across enterprise Oracle migrations.
1. Estate discovery
Catalog every Oracle database across your estate - on-premise and on-cloud: version, dependencies, and feature usage, with AWR analysis to size the target accurately.
2. Migration planning
Model the target cloud architecture, sequence the migration in waves with a risk score per database, and align with a timeline.
3. Parallel standby build
Build a live standby of each database on the target cloud using Oracle Data Guard, kept continuously in sync. Production keeps running throughout.
4. Validate and test
Validate applications, queries, and batch jobs against the cloud standby before cutover, against your pre-migration baseline.
5. Cut over on your schedule
A single controlled switchover with near-zero downtime and zero data loss, when you are ready and not before.
The real risk
The crown jewel you least want to touch runs the business
Moving mission-critical Oracle can feel like a one-way door. Here is how Tessell's proven approach minimizes the fears that stalls the move.The business keeps running
Production stays live. You promote a standby you have already proven, not the running system.Reversible at every step
Every step is reversible. Until you commit, the original system stays live and you can fall back to it at any time.No application rewrites
No rewrites. Applications connect to the same endpoints, with no schema changes.You control the cutover
You validate first and cut over on your schedule. Nothing goes live until you say so.Zero data loss
Continuous Oracle Data Guard sync means zero data loss and near-zero downtime.Your data stays in your control
It all runs in your own account, under your keys. Tessell holds only metadata.Post migration
Tessell runs day-two operations,
fully managed
A database still has to be provisioned, kept current, watched, and kept running when something goes wrong. After cutover, Tessell manages the full operational lifecycle of your Oracle estate from one unified control plane, on any cloud.
Managed day-two operations
Provisioning, patching, backups, governance, and monitoring, all on a unified operating model for every database in your estate.
Application teams unblocked
Developers who waited days on a central queue for a database now self-serve themselves to your set standards, in minutes.
Business continuity you can prove
Multi-AZ high availability and cross-region disaster recovery through Oracle Data Guard, with on-demand DR drills.
Oracle investment optimized
Right-sizing, governance, and cost and license visibility for each workload across the estate, with policy and FinOps controls built-in.Choose your cloud
Run your Oracle estate on one or multi-cloud
Tessell migrates and manages Oracle on every major cloud, from one control plane, on one operating model.
Oracle on AWS
Migrate to AWS with full Enterprise Edition and OS-level access, in your own account, and put your committed AWS spend to work.
Oracle on Azure
Bring Oracle into an Azure estate on your terms, run it in your own subscription, and draw down your your MACC commitment.
Oracle on Google Cloud
Run fully managed, full-feature Oracle on Google Cloud, in your own project, with automated operations and dependable recovery.
Oracle on OCI
Bring managed operations and unified control to the Oracle you run yourself there, and manage it along the rest of your estate.Frequently Asked
Questions
Yes. Tessell migrates Oracle at the infrastructure layer. Applications connect to the same endpoints after migration, with no schema rewrites and no recompilation.
No. Tessell runs Oracle in your own cloud account, in your VPCs, with your encryption keys. Native backups are stored in your own cloud object storage. Your data stays within your perimeter from migration through ongoing operations.
Production stays live while Tessell builds and continuously syncs a standby on the target cloud. You validate against it first, then cut over on your schedule with zero data loss and near-zero downtime.
Oracle Enterprise Edition and Standard Edition 2, across the supported versions you run today. Share your estate in the assessment and Tessell will confirm coverage for your specific versions.
Multi-AZ high availability on Enterprise and Standard Edition 2, and cross-region disaster recovery through Oracle Data Guard on Enterprise Edition, with on-demand DR drills.
It depends on estate size and complexity. Single-instance databases move quickly, and larger estates are planned in waves. Tessell scopes yours during the free estate assessment.
AWS, Azure, and Google Cloud, with multi-cloud Oracle estates managed from a single control plane. If you run Oracle on OCI, Tessell can manage it there too.
Ready to move Oracle out of the data center?
Start with a free estate assessment. Tessell will catalog your Oracle estate, model the target architecture, and recommend a phased migration plan tied to your timeline, with no obligation.