Here are some common limitations that were associated with OIC:

1. Service Limits and Quotas: OIC often imposes service limits and quotas on various aspects of the platform, including the number of connections, messages processed, and integration instances. These limits may vary based on your subscription level and may require adjustments for high-volume use cases.
2. Complex Transformations: While OIC supports data transformations, complex data mapping and transformations may require additional effort and custom coding in some cases.
3. Batch Processing: OIC’s batch processing capabilities may have certain limitations in terms of the number of records that can be processed in a single batch.
4. Custom Code: While OIC provides a low-code/no-code environment, there may be scenarios where you need to write custom code or use custom Java libraries, which might have limitations in terms of compatibility or execution.
5. Data Storage: OIC provides storage for integration logs and artifacts, but there may be limitations on data retention and storage space. Long-term storage of large volumes of data may require additional configurations or archiving.
6. Complex Routing: Complex routing and orchestration patterns may require custom implementations or integration with other Oracle services.
7. Security and Compliance: Depending on your organization’s specific security and compliance requirements, you may need to consider additional configurations or integrations with security tools.
8. Rate Limiting: OIC may impose rate limits on certain operations, such as API requests, to ensure fair usage and resource availability.
9. Third-Party Service Limitations: The behavior and limitations of third-party services or applications integrated with OIC may impact your integration design.
10. Monitoring and Logging: While OIC offers monitoring and logging capabilities, there may be limitations in terms of granularity and historical data retention. You may need to consider additional logging and monitoring solutions for specific use cases.
11. Integration Adapters: The availability and functionality of integration adapters for specific systems or applications can vary, and there may be limitations in terms of supported features.
12. Version Compatibility: When upgrading or migrating integrations, you should be aware of potential compatibility issues between different versions of OIC.