Worked on the apache/arrow-adbc repository to enhance the stability of the ADBC driver by addressing resource management during database disconnection. Implemented a solution in Python that ensures all open cursors are properly closed when a database connection is terminated, preventing memory leaks and runtime errors. Introduced cursor tracking mechanisms and comprehensive unit tests to verify the cleanup process, thereby improving the robustness of connection management. Focused on database management best practices, the work resolved a longstanding issue related to cursor handling on disconnect, contributing to more reliable system behavior and maintainable code within the Python-based driver manager.