When encountering the error 24000: Invalid Cursor State in PostgreSQL, perform the following actions for investigation:
SELECT * FROM pg_stat_activity WHERE state != 'idle'; to see if there are any transactions that are not properly closed or idle transactions. An improperly managed transaction can cause cursor states to behave unexpectedly.SELECT * FROM pg_cursors; to list all cursors currently available in your session. This will help you understand if the cursor you are trying to use is actually open or has been inadvertently closed or not correctly declared.SELECT * FROM pg_log WHERE log_time >= 'your_error_time' - INTERVAL '1 HOUR'; (adjust the interval as necessary) to check for any related server logs that could indicate a broader issue around the time the error occurred. Note: This requires access to the pg_log directory, which might not be directly accessible via SQL in some configurations.SHOW transaction_isolation;. In some cases, the transaction isolation level might influence visibility and the state of the cursor.Remember, these actions are intended for immediate investigation into the error 24000: Invalid Cursor State. Depending on your findings, the resolution might involve adjusting your SQL logic, ensuring proper transaction management, or further investigating the application's interaction with the PostgreSQL database.
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