1. What is an ODI run-time agent?
- An ODI run-time agent is a Java component responsible for orchestrating and executing jobs (such as models, mappings, scenarios, and packages) in Oracle Data Integrator. It functions as both a listener and a scheduler.
2. What are the main functions of the ODI agent?
- The ODI agent listens for job execution requests, either from the ODI user interface or an external scheduler.
- It schedules and executes jobs based on predefined schedules or manual triggers.
- It also provides support for load balancing, session management, and job execution monitoring.
3. Can ODI agents be triggered by external systems?
- Yes, ODI agents can be triggered by third-party scheduling systems. This requires integration with external schedulers, and the setup is documented in the Administering Oracle Data Integrator guide.
4. Do I need more than one ODI agent in a production environment?
- Typically, a single ODI agent is sufficient for most production environments. However, if you require load balancing, high availability, or redundancy, you can set up multiple load-balanced agents.
5. What is the difference between an external ODI agent and the internal ODI Studio agent?
- External Agent: Designed for production environments, providing full functionality like session management, stale session cleanup, and load balancing.
- Internal ODI Studio Agent: Used for development and testing purposes within the ODI Studio interface. It lacks production features and is unsuitable for handling large-scale data integration tasks.
6. What are the limitations of the internal ODI Studio agent?
- The internal ODI Studio agent does not support:
- Stale session cleanup
- Stopping running sessions
- Load balancing
7. When should I use the internal ODI Studio agent?
- The internal agent should be used for development and initial testing only. It is not meant for production environments, as it lacks critical features needed for full-scale data integration operations.
8. How can I run jobs without using an agent?
- In ODI Studio, you can select the Local (No Agent) option in the Run dialog to execute jobs without using an external agent. This runs the job directly within the Studio environment but comes with the limitations of the internal agent.
9. Can I stop a running job using the internal agent?
- No, the internal ODI Studio agent does not provide the capability to stop a running session. You need an external agent for that functionality.
10. What happens if I use an external scheduler to trigger ODI jobs?
- Using an external scheduler allows you to trigger jobs at predefined times or under specific conditions, integrating ODI with other scheduling systems. This can be helpful for automated and efficient job execution in production environments.
11. How do I configure multiple load-balanced ODI agents?
- You can set up multiple load-balanced agents by following the guidelines in the "Load balancing Agents" section of the Oracle Data Integrator documentation. This setup is typically used in high-volume or high-availability production environments.
12. What are the benefits of using external agents over internal agents?
- External agents provide:
- Load balancing across multiple agents.
- Stale session cleanup and management.
- Ability to stop running sessions.
- Full-scale job scheduling and execution in production environments.
- Internal agents are limited to development and testing scenarios and do not offer the full range of features available in external agents.
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