Did 1Z0-1158-26 replace the OCI Generative AI Professional exam? +
Yes. OCI Enterprise AI Professional (1Z0-1158-26) replaced the OCI Generative AI Professional exam (1Z0-1127). The focus moved from models and fine-tuning toward building, deploying and operating enterprise AI agents on OCI. Preparation built around the older exam misses much of the new scope, especially agent deployment and governance.
How many questions are on 1Z0-1158-26 and what's the passing score? +
The exam has 50 questions in 90 minutes, and the passing score is 68%. That leaves you roughly 16 questions of error budget. A weak area, such as agent deployment or governance, can decide the result on its own, so aim for consistent practice scores across every topic rather than a strong average.
What topics make 1Z0-1158-26 difficult? +
The exam reflects OCI Enterprise AI's current agent tooling, including the OpenAI-compatible Responses API and hosted agent deployments. These services are recent, so hands-on experience and reliable examples are scarce. It also covers operating agents in production - guardrails, observability and cost control - which candidates focused on getting agents working often haven't studied.
How much does 1Z0-1158-26 cost and how long is it valid? +
Oracle sells professional exam attempts through Oracle MyLearn, and pricing varies by region and subscription, so check the exam page for the current fee. OCI certifications are valid for 24 months from the date earned. There are no formal prerequisites, but the exam assumes practical experience with OCI and with building LLM-based applications.
How long should I prepare for OCI Enterprise AI Professional? +
With OCI and LLM application experience, plan 4 to 8 weeks. Get hands-on in an OCI tenancy: call models through the Responses API, deploy a hosted agent, and set up guardrails and monitoring. Reading alone won't prepare you well, because the scenario questions assume you've seen how these services behave.
What happens if I fail 1Z0-1158-26? +
Oracle lets you schedule a retake for a date after your failed attempt, and each retake is a separate paid attempt. You can't retake an exam you've already passed. Use your score report's topic breakdown to focus the next attempt, since with a 68% pass mark one weak area is often the whole difference.