pvillamil

Clear Systemd Journal Logs in Ubuntu 20.04

Systemd has its own logging system called the journal, and the log files are stored in /var/log/journal.

sudo journalctl --disk-usage

Active journal files will be marked as archived, so that they are never written to in future.

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'