1. Identify the source of the PostgreSQL 42830 error:

SELECT * FROM pg_stat_activity WHERE state = 'idle in transaction';

2. Check the application code for any open transactions that are not being committed or rolled back:

SELECT * FROM pg_stat_activity WHERE state = 'active';

3. If any open transactions are found, commit or rollback the transaction:

COMMIT;ROLLBACK;

4. Check the PostgreSQL logs for any other errors that may be related to the 42830 error:

SELECT * FROM pg_log;

5. If any other errors are found, address them accordingly.

6. Monitor the PostgreSQL database for any future occurrences of the 42830 error using an automated database observability tool. This tool can assist in monitoring and fixing the PostgreSQL 42830 error by providing real-time visibility into the database performance and alerting when any errors occur.