FindBlockingActiveQueries.sql

-- blocking statements, uesrs etc
SELECT blocked_locks.pid     AS blocked_pid,
       blocked_activity.usename  AS blocked_user,
       blocking_locks.pid     AS blocking_pid,
       blocking_activity.usename AS blocking_user,
       blocked_activity.query    AS blocked_statement,
       blocking_activity.query   AS current_statement_in_blocking_process
FROM  pg_catalog.pg_locks         blocked_locks
          JOIN pg_catalog.pg_stat_activity blocked_activity  ON blocked_activity.pid = blocked_locks.pid
          JOIN pg_catalog.pg_locks         blocking_locks
               ON blocking_locks.locktype = blocked_locks.locktype
                   AND blocking_locks.database IS NOT DISTINCT FROM blocked_locks.database
                   AND blocking_locks.relation IS NOT DISTINCT FROM blocked_locks.relation
                   AND blocking_locks.page IS NOT DISTINCT FROM blocked_locks.page
                   AND blocking_locks.tuple IS NOT DISTINCT FROM blocked_locks.tuple
                   AND blocking_locks.virtualxid IS NOT DISTINCT FROM blocked_locks.virtualxid
                   AND blocking_locks.transactionid IS NOT DISTINCT FROM blocked_locks.transactionid
                   AND blocking_locks.classid IS NOT DISTINCT FROM blocked_locks.classid
                   AND blocking_locks.objid IS NOT DISTINCT FROM blocked_locks.objid
                   AND blocking_locks.objsubid IS NOT DISTINCT FROM blocked_locks.objsubid
                   AND blocking_locks.pid != blocked_locks.pid

          JOIN pg_catalog.pg_stat_activity blocking_activity ON blocking_activity.pid = blocking_locks.pid
WHERE  blocked_locks.granted;



-- blocking statements and duration
SELECT
    pid,
    now() - pg_stat_activity.query_start AS duration,
    query,
    state
FROM pg_stat_activity
WHERE (now() - pg_stat_activity.query_start) > interval '5 minutes';