1. Identify the source of the PostgreSQL 38000 error:

SELECT * FROM pg_stat_activity;

2. Check the PostgreSQL log file for more information about the error:

tail -f /var/log/postgresql/postgresql--main.log

3. Check the configuration settings of the PostgreSQL server:

SHOW ALL;

4. Check the PostgreSQL database for any locks or deadlocks:

SELECT * FROM pg_locks;

5. Check the PostgreSQL database for any queries that are running for a long time:

SELECT * FROM pg_stat_activity WHERE state = 'active';

6. Check the PostgreSQL database for any queries that are using too much memory:

SELECT * FROM pg_stat_activity WHERE query LIKE '%memory%';

7. Check the PostgreSQL database for any queries that are using too many resources:

SELECT * FROM pg_stat_activity WHERE query LIKE '%resources%';

8. Check the PostgreSQL database for any queries that are using too many locks:

SELECT * FROM pg_stat_activity WHERE query LIKE '%locks%';

9. Check the PostgreSQL database for any queries that are using too many connections:

SELECT * FROM pg_stat_activity WHERE query LIKE '%connections%';

10. Check the PostgreSQL database for any queries that are using too many transactions:

SELECT * FROM pg_stat_activity WHERE query LIKE '%transactions%';

11. Check the PostgreSQL database for any queries that are using too many cursors:

SELECT * FROM pg_stat_activity WHERE query LIKE '%cursors%';

12. Check the PostgreSQL database for any queries that are using too many temporary tables:

SELECT * FROM pg_stat_activity WHERE query LIKE '%temporary%';

13. Check the PostgreSQL database for any queries that are using too many indexes:

SELECT * FROM pg_stat_activity WHERE query LIKE '%indexes%';

14. Check the PostgreSQL database for any queries that are using too many joins:

SELECT * FROM pg_stat_activity WHERE query LIKE '%joins%';

15. Check the PostgreSQL database for any queries that are using too many subqueries:

SELECT * FROM pg_stat_activity WHERE query LIKE '%subqueries%';

16. Check the PostgreSQL database for any queries that are using too many views:

SELECT * FROM pg_stat_activity WHERE query LIKE '%views%';

17. Check the PostgreSQL database for any queries that are using too many functions:

SELECT * FROM pg_stat_activity WHERE query LIKE '%functions%';

18. Check the PostgreSQL database for any queries that are using too many stored procedures:

SELECT * FROM pg_stat_activity WHERE query LIKE '%stored%';

19. Check the PostgreSQL database for any queries that are using too many triggers:

SELECT * FROM pg_stat_activity WHERE query LIKE '%triggers%';

20. Check the PostgreSQL database for any queries that are using too many sequences:

SELECT * FROM pg_stat_activity WHERE query LIKE '%sequences%';

21. Check the PostgreSQL database for any queries that are using too many roles:

SELECT * FROM pg_stat_activity WHERE query LIKE '%roles%';

22. Check the PostgreSQL database for any queries that are using too many privileges:

SELECT * FROM pg_stat_activity WHERE query LIKE '%privileges%';

23. Check the PostgreSQL database for any queries that are using too many user-defined types:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

24. Check the PostgreSQL database for any queries that are using too many user-defined functions:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

25. Check the PostgreSQL database for any queries that are using too many user-defined operators:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

26. Check the PostgreSQL database for any queries that are using too many user-defined aggregates:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

27. Check the PostgreSQL database for any queries that are using too many user-defined casts:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

28. Check the PostgreSQL database for any queries that are using too many user-defined collations:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

29. Check the PostgreSQL database for any queries that are using too many user-defined conversions:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

30. Check the PostgreSQL database for any queries that are using too many user-defined languages:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

31. Check the PostgreSQL database for any queries that are using too many user-defined operators classes:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

32. Check the PostgreSQL database for any queries that are using too many user-defined operator families:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

33. Check the PostgreSQL database for any queries that are using too many user-defined text search configurations:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

34. Check the PostgreSQL database for any queries that are using too many user-defined text search dictionaries:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

35. Check the PostgreSQL database for any queries that are using too many user-defined text search parsers:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

36. Check the PostgreSQL database for any queries that are using too many user-defined text search templates:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

37. Check the PostgreSQL database for any queries that are using too many user-defined foreign data wrappers:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

38. Check the PostgreSQL database for any queries that are using too many user-defined foreign servers:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

39. Check the PostgreSQL database for any queries that are using too many user-defined foreign tables:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

40. Check the PostgreSQL database for any queries that are using too many user-defined extensions:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

41. Check the PostgreSQL database for any queries that are using too many user-defined schemas:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

42. Check the PostgreSQL database for any queries that are using too many user-defined tablespaces:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

43. Check the PostgreSQL database for any queries that are using too many user-defined roles:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

44. Check the PostgreSQL database for any queries that are using too many user-defined privileges:

SELECT * FROM pg_stat_activity WHERE query LIKE '%user-defined%';

45. Check the PostgreSQL database for any queries that are using too many user-defined sequences:

SELECT * FROM pg_stat_activity WHERE query LIKE