Can You Run Exadata on Google Cloud? (GCE + Colossus Explained)
TL;DR
No — you cannot run Oracle Exadata on Google Compute Engine, even though GCE uses Google’s Colossus storage system.
Colossus improves storage — but it does not replace Exadata’s engineered architecture.
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The Confusion: GCE + Colossus
Google Cloud’s storage backend is Colossus, a distributed storage system that powers:
Persistent Disk
Scalability and durability
High throughput
At a glance, that sounds similar to Exadata storage.
👉 That’s where the confusion starts.
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What Colossus Actually Is
Colossus is:
A distributed storage layer
Designed for durability and scale
Completely transparent to the database
It provides:
Block storage to VMs
Replication under the hood
Solid performance for general workloads
But:
It has no awareness of Oracle SQL, execution plans, or database internals
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What Exadata Actually Is
Oracle Exadata is not just storage — it’s a full database platform.
It includes:
Database servers
Storage servers (cells)
RDMA / InfiniBand networking
Tight integration between database and storage
Key capabilities:
Smart Scan (SQL offload to storage)
Storage Indexes
Hybrid Columnar Compression (HCC)
Cell-based filtering and processing
👉 Exadata pushes work down to storage 👉 Colossus just stores blocks
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Why GCE + Colossus ≠ Exadata
Here’s the clean comparison:
Capability GCE + Colossus Exadata Distributed storage ✅ ✅ Database-aware storage ❌ ✅ Smart Scan (SQL offload) ❌ ✅ RDMA / ultra-low latency ❌ ✅ Storage indexes ❌ ✅ HCC compression ❌ ✅
👉 Colossus operates below the database 👉 Exadata is tightly integrated with the database
That’s the difference.
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What You Can Run on GCE
You can run Oracle Database on GCE:
Oracle 19c / 21c on Linux VMs
Persistent Disk (Colossus-backed)
Standard I/O path
But you lose:
Smart Scan
Storage offload
Exadata-specific optimizations
👉 This is Oracle on cloud infrastructure, not Exadata
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The Right Way to Use Exadata with Google Cloud
If you want both GCP and Exadata, there are only two real options:
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Option 1: Hybrid Architecture (Most Common)
App tier → GCP (GKE, Compute Engine, analytics)
Database tier → Oracle Exadata Cloud Service
Connected via private interconnect.
👉 This is widely used in enterprise environments.
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Option 2: Oracle Database@Google Cloud
Oracle Database@Google Cloud
Runs real Exadata hardware inside Google data centers
👉 This is the only way to get true Exadata inside GCP
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Real-World Perspective (DBA Take)
If you’ve worked on Exadata, you already know:
Storage performance is only part of the story
The real value is offload + integration
Trying to replace Exadata with GCE + Colossus is like:
Running a high-performance database on great storage — but without the engine that makes it fast
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“GCE uses Colossus for distributed storage, but it operates below the database layer. Exadata requires database-aware storage, RDMA networking, and Smart Scan offload. You can run Oracle on GCE, but not Exadata. The supported model is Oracle Database@Google Cloud or Exadata in OCI connected via interconnect.”
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Final Take
Colossus = great cloud storage
Exadata = engineered database platform
They solve different problems
If you need Exadata-level performance: 👉 Use OCI or Oracle Database@Google Cloud
If you just need Oracle in GCP: 👉 GCE works fine
