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Henry N.

Henry N.

Database Expertise: Performance Tuning & Solutions

I am a seasoned Database Administrator with 20+ years of experience managing, tuning, and troubleshooting mission-critical databases across Oracle, SQL Server, PostgreSQL, MySQL, and cloud platforms (AWS, Azure, Google BigQuery). I specialize in performance optimization—identifying issues within minutes and implementing solutions that restore speed, stability, and reliability. My core strengths include: Performance Tuning & Troubleshooting: SQL query optimization, indexing, partitioning, memory/I/O tuning, and real-time issue resolution. Database Administration: Installation, upgrades, backup/recovery, high availability (RAC, Always On, replication), and security hardening. Data Architecture & Warehousing: Designing scalable schemas, star models, and ETL pipelines for BI and analytics. Business Intelligence Integration: Power BI, Tableau, SAP BO, and advanced reporting solutions. I deliver robust, secure, and high-performing database environments that empower organizations to scale confidently and make data-driven decisions. Whether on-premises or in the cloud, I ensure your systems run at peak efficiency with minimal downtime.

🇻🇳Hanoi, Vietnam$39/hr100% JSS4.87 (36)Since May 2014

Earnings and projects

MRR
$45

Last 6 months ÷ 6

World#152,948 / 412k
🇻🇳Country#1,472 / 3,463
Revenue, last 30 days
$10

Last 6 months: $267

World#105,109 / 412k
🇻🇳Country#1,049 / 3,463
Total earnings
$18k

Billed in all: $18k

World#147,608 / 412k
🇻🇳Country#1,049 / 3,463
Per project
$290

$89 in the last 6 months

World#234,039 / 412k
🇻🇳Country#1,865 / 3,463
Projects, last 6 months
3
67% fixed33% hourly
World#66,479 / 412k
🇻🇳Country#768 / 3,463
Projects in all
63

Across 70 contracts

63% fixed37% hourly
World#48,156 / 412k
🇻🇳Country#397 / 3,463

Earnings, last 30 days

$18.4k+$10 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$18,435$18,440$18,445$18,450Oct 8Oct 23Nov 7

Skill rankings: Top 24% in Database Modeling

Ranked by MRR among everyone on Upwork with the skill.

  1. #7Oracle Performance Tuning21 freelancers · 🇻🇳 #1Top 33%
  2. #15Query Tuning42 freelancers · 🇻🇳 #1Top 36%
  3. #27Oracle Database Administration96 freelancers · 🇻🇳 #1Top 28%
  4. #37Database Modeling156 freelancers · 🇻🇳 #1Top 24%
  5. #39Database Maintenance119 freelancers · 🇻🇳 #1Top 33%
  6. #82Oracle Database261 freelancers · 🇻🇳 #2Top 31%
  7. #92Microsoft SQL Server Administration325 freelancers · 🇻🇳 #1Top 28%
  8. #102Database Optimization229 freelancers · 🇻🇳 #1Top 45%