OraSol
Oracle RDBMS • Oracle SQL • PL/SQL • SQL*Net • Performance

Arnout Calmeyn — Oracle database consulting for systems that must never slow down.

Oracle consultant in the Basel region (CH). I specialize in Oracle SQL, PL/SQL, Oracle internals, performance tuning, and installing & optimizing Oracle databases. SQL*Net is one of my key specialities — I help teams make Oracle connectivity reliable and fast.

Contact Call: +41 79 320 7969 orasol.com
Rate: CHF 180 / hour (excl. VAT) Location: Basel region, Switzerland Domains: orahelp.com • orasol.com
Arnout Calmeyn
Current roles
Consultant at Welcomm Communications GmbH (Basel region, CH)
CEO at Kallysoft Informatik AG (Allschwil, Switzerland — close to Basel)
Kallysoft Oracle strength
Kallysoft has around 60 employees with a high level of Oracle knowledge to support projects end-to-end.

Services

Hands-on consulting for critical Oracle environments — from quick wins to long-term stability.

  • Performance tuning: SQL tuning, wait events, execution plans, optimizer strategy, index design
  • Oracle SQL specialist work: complex SQL, refactoring, best practices, review & mentoring
  • PL/SQL engineering: packages, performance patterns, robust error handling, instrumentation
  • Installation & upgrades: new builds, patching strategy, hardening, automation
  • SQL*Net / connectivity: listener, naming, latency troubleshooting, configuration cleanup
  • Oracle internals: deep-dive investigations, stability, root-cause analysis

Expertise

A practical mix of database engineering and internals.

Oracle SQL PL/SQL SQL*Net Performance Install & Upgrade Troubleshooting Oracle Internals Java (Oracle internal)

If you have a slow system, unstable connectivity, or an environment that needs a clean install/upgrade path, I can jump in quickly, find the root cause, and leave you with a clear plan.

Contact

Best way to reach me: phone. If you prefer email, connect your own email address below.

Phone: +41 79 320 7969 Rate: CHF 180 / hour (excl. VAT) Domains: orahelp.com • orasol.com

Based near Basel

Switzerland • Basel region
CEO at Kallysoft Informatik AG (Allschwil, close to Basel)
Consultant at Welcomm Communications GmbH