Consulta de Bloqueos en PostgresSql

Si tienes problemas de registros bloqueados en la base de datos ejecuta la siguiente sentencia para visualizar que sentencia/s lo están provocando:

SELECT bl.pid AS blocked_pid, a.usename AS blocked_user,

kl.pid AS blocking_pid, ka.usename AS blocking_user, a.query AS blocked_statement

FROM pg_catalog.pg_locks bl

JOIN pg_catalog.pg_stat_activity a

ON bl.pid = a.pid

JOIN pg_catalog.pg_locks kl

JOIN pg_catalog.pg_stat_activity ka

ON kl.pid = ka.pid

ON bl.transactionid = kl.transactionid AND bl.pid != kl.pid

WHERE NOT bl.granted;