IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G)
The IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course equips system administrators, programmers, and data processing managers with skills to optimize IBM i workloads and resolve performance bottlenecks. It covers job management, subsystem tuning, storage allocation, and real-time performance measurement using IBM-provided tools. Based on IBM development lab standards, this course addresses the growing demand for IBM i professionals, with over 150,000 systems in enterprise environments requiring ongoing optimization.
This course prepares learners for the IBM Certified Administrator - IBM i certification by building core tuning competencies through official vendor-authorized courseware. Koenig Solutions enhances learning with 30-day lab access, enabling hands-on practice with real system configurations. Graduates gain the expertise to ensure peak IBM i performance, directly improving system efficiency and career advancement in legacy infrastructure roles.
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Course Overview
The IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course by IBM is an intermediate-level training program designed for data processing managers, programmers, and system analysts responsible for maintaining high-performance IBM i environments. While no specific certification exam is directly tied to OL23G, this course provides foundational knowledge critical for professionals pursuing advanced IBM i system administration credentials. With over 150,000 IBM i systems in operation globally across finance, manufacturing, and healthcare sectors, optimizing system performance remains a high-priority skill. Participants will gain practical expertise in workload balancing, subsystem management, and operating system tuning to ensure efficient resource utilization in enterprise settings.
This course emphasizes hands-on learning through real-world scenarios using IBM’s native tools, including Performance Data Investigator, System Service Tools (SST), Work Management functions, Job Descriptions, Subsystem Descriptions, and System Values configuration. Learners engage in guided lab exercises conducted within a live IBM i virtual environment, where they configure custom subsystems, set up memory pools and activity levels, tailor job priorities, and adjust system parameters based on simulated workload demands. A key project involves analyzing performance metrics to identify bottlenecks and reconfiguring subsystem structures to improve throughput, applying evaluation criteria derived from IBM development labs to ensure industry-relevant decision-making.
By mastering the core principles taught in IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G), attendees strengthen their readiness for broader IBM i certification paths and enhance career progression in system administration roles. IBM i professionals report average annual salaries of $95,000 in North America, with senior administrators earning over $120,000, reflecting strong demand for performance optimization skills. Koenig Solutions supports this learning journey with official IBM courseware, Guaranteed-to-Run batches, and optional 1-on-1 mentoring, ensuring learners achieve mastery at their own pace. Graduates are well-positioned to advance into roles such as IBM i Systems Performance Analyst or Senior Operations Engineer, driving efficiency in mission-critical IT infrastructures.
What You'll Learn
Prerequisites
- Experience with IBM i system administration using the 5250 interface or IBM Navigator for i, essential for effective tuning of IBM i systems
- Working knowledge of commands like Work with System Status (WRKSYSSTS), Work with Active Jobs (WRKACTJOB), and Work with Disk Status (WRKDSKSTS), crucial for optimizing IBM i performance
- Understanding of IBM i work management concepts such as job queues, subsystems, and routing programs, vital for tailoring IBM i environments
- Familiarity with key performance metrics like CPU utilization, fault rates, and auxiliary I/O, important for effective IBM i performance tuning
- Completion of IBM i System Administration (OL19G) or equivalent hands-on experience, foundational for mastering IBM i performance optimization
- Practical experience in diagnosing and resolving issues on IBM i systems, essential for successful IBM i performance tuning
Certification Exam
Everything you need to know about the OL23G certification exam
What's Included in Your Training
Every enrollment comes packed with resources to maximise your learning and exam success
Exam Preparation Materials
Practice Test Questions (200+)
Certificate of Completion
Post-Training Support (30 days)
Session Recording Access
Free Rescheduling (7+ days notice)
Career Outcomes
of OL23G certified professionals report career advancement within 6 months
Salary Impact
Average salary increase reported after obtaining the OL23G certification
*Source: Glassdoor / LinkedIn 2025
Job Roles
- IBM i Systems Engineer
- Power Systems Administrator
- IBM i Performance Tuning Specialist
- AS/400 System Administrator
- IBM i Platform Engineer
- Database Administrator – Performance & Capacity
Companies Hiring
and 5,000+ organizations worldwide seeking OL23G certified professionals
Course Student Reviews
Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.
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★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
-
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified -
★★★★★
“Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”
AZ-104 Certified ✓ Verified -
★★★★★
“I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”
Enterprise Client ✓ Verified -
★★★★★
“The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”
PL-300 Certified ✓ Verified
-
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified -
★★★★★
“From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”
AZ-305 Expert ✓ Verified -
★★★★★
“As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”
100+ Learners Trained ✓ Verified -
★★★★★
“SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”
SC-300 Certified ✓ Verified
-
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified -
★★★★★
“AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”
AI-102 Certified ✓ Verified -
★★★★★
“DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”
DP-600 Certified ✓ Verified -
★★★★★
“Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”
AZ-400 Team Training ✓ Verified
Frequently Asked Questions
Everything you need to know about the OL23G training course
Is the certification exam included in the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course, and what is the exam fee if separate?
What training formats does Koenig offer for the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course, and is it Guaranteed-to-Run?
How long is lab access provided for the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course, and what type of environment is used?
What is Koenig's rescheduling and cancellation policy for the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course?
What is the format, number of questions, passing score, and time limit for the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) certification exam?
How long is the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) certification valid, and what is the renewal process and cost?
What post-training support does Koenig provide after completing the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course?
What are the prerequisites or prior experience needed for the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course?
What career impact and salary increase can be expected after completing the IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) course?
How does instructor-led training for IBM i Performance Tuning - I: IBM i Structure, Tailoring and Basic Tuning (OL23G) compare to self-study in terms of effectiveness and success rate?
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