Services / Oracle Consulting

Oracle migrations and database care, without the downtime.

Our DBAs move and run mission-critical Oracle databases for banks, cities and software companies. We plan every cut-over so the business keeps running, and we stay on call afterwards.

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30 TB: moved for a global bank with zero downtime
Zero: downtime across our published Oracle migrations
4: database engines on call: Oracle, PostgreSQL, SQL Server, MySQL

Zero-downtime Migration

Move the database while the business keeps using it

We build the new platform alongside the old one and keep both in sync in real time with Oracle GoldenGate. Users keep working on the old system until the new one has been tested end to end, and the final switch is planned, rehearsed and reversible.

More on GoldenGate Zero-Downtime Migration →

What we do

Version upgrades and hardware moves, such as 10g on Solaris to 12c RAC on AIX
Real-time replication with Oracle GoldenGate
Rehearsed cut-over with a tested way back
Data validation before and after the switch

Heterogeneous Migration

Change database engines without starting over

Moving from Sybase or SQL Server to Oracle, or from Oracle to PostgreSQL, means converting the schema, the code and the data. We automate the conversion, replicate continuously during the move and validate table by table.

More on Heterogeneous Database Migration →

What we do

Schema and stored-procedure conversion
Continuous replication until cut-over
Row-count and checksum validation
Performance tuning on the new engine

Database Administration

Senior DBAs on call, remotely

Our remote DBA team looks after Oracle, PostgreSQL, SQL Server and MySQL: tuning, patching, backups, high availability and urgent fixes when something breaks. When you call, you reach someone who has seen the problem before.

What we do

Oracle RAC, Data Guard and GoldenGate
PostgreSQL, SQL Server and MySQL
Health checks, patching and upgrades
Database rescue for urgent incidents

In depth

Oracle Consulting in practice

Client names are withheld. We are happy to share details on a call.

All case studies

Delivered
30 TB, zero downtime
Financial services
Oracle
Zero-downtime move of a 30 TB Oracle database for a global retail bank
The bank's transaction database served thousands of users around the clock. We built the new Oracle 12c RAC platform on IBM AIX alongside the old Solaris system, kept the two in sync with Oracle GoldenGate, tested everything and switched over with no downtime and no data loss.
- 30 TB moved with zero downtime
- Zero data loss at cut-over
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Delivered
Zero downtime
Legal technology
Oracle
Sybase to Oracle with zero downtime for an e-discovery company
Sybase was holding back a platform that processes large volumes of legal data. We converted the schema, kept both databases in sync with continuous replication, validated the data and switched over without interrupting the business.
- Zero downtime at cut-over
- No disruption to client workflows
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Delivered
No service disruption
Local government
Oracle
A city's Oracle database moved off ageing Solaris hardware
A major California city ran a mission-critical Oracle database on Solaris servers nearing end of life. We mapped the dependencies, confirmed the applications would work unchanged and re-platformed the database to Linux without disrupting public services.
- No disruption to public services
- Minimal application changes
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Delivered
Fixed within hours
Not disclosed
Oracle
Production database rescued within hours
A client's in-house team had worked an unstable production database for some time without finding the cause. Our DBAs joined a secure screen-share, found the root cause and gave them a step-by-step plan to recover and to prevent a repeat.
- Root cause found and fixed within hours
- Prevention plan handed to the client's team
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