tail -n 100 /path/to/your/logfile.log to check the recent logs. Replace /path/to/your/logfile.log with the actual path to your PostgreSQL log file.top or htop on the server to check if the system is running out of resources like CPU, RAM, or disk space. High resource utilization can lead to internal errors.pg_dump utility to check for database corruption. Run pg_dump dbname > dbname.sql to back up the database, replacing dbname with your database name. If pg_dump reports errors, it might indicate corruption.sudo systemctl restart postgresql on systemd-based systems or sudo service postgresql restart on init.d-based systems.df -h to check disk space usage. Ensure that the disk where PostgreSQL data is stored is not full.SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE state != 'idle' AND query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
pg_stat_all_tables and pg_stat_all_indexes views to identify if there are tables or indexes with bloated sizes or operational issues.(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)



