From 7051547e259b65115af762d9936a57b861c1fe8a Mon Sep 17 00:00:00 2001
From: pashko <pm@pm.org.ru>
Date: Tue, 25 Nov 2025 11:28:08 +0800
Subject: [PATCH] Add posgresql_diagnostic/diagnositc.sql

---
 posgresql_diagnostic/diagnositc.sql | 57 +++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 posgresql_diagnostic/diagnositc.sql

diff --git a/posgresql_diagnostic/diagnositc.sql b/posgresql_diagnostic/diagnositc.sql
new file mode 100644
index 0000000..27c0d9a
--- /dev/null
+++ b/posgresql_diagnostic/diagnositc.sql
@@ -0,0 +1,57 @@
+-- Текущие активные подключения
+SELECT 
+    pid,
+    datname,
+    usename,
+    application_name,
+    client_addr,
+    state,
+    query,
+    query_start,
+    state_change
+FROM pg_stat_activity 
+WHERE state = 'active'
+ORDER BY query_start;
+
+-- Количество подключений по клиентам
+SELECT 
+    client_addr,
+    application_name,
+    count(*) as connection_count,
+    max(state) as state
+FROM pg_stat_activity 
+GROUP BY client_addr, application_name
+ORDER BY connection_count DESC;
+
+-- Долго выполняющиеся запросы
+SELECT 
+    pid,
+    now() - query_start as duration,
+    query,
+    state
+FROM pg_stat_activity 
+WHERE state = 'active' 
+AND now() - query_start > interval '30 seconds'
+ORDER BY duration DESC;
+
+
+-- Лимиты подключений
+SHOW max_connections;
+SHOW superuser_reserved_connections;
+
+-- Таймауты
+SHOW idle_in_transaction_session_timeout;
+SHOW tcp_keepalives_idle;
+SHOW tcp_keepalives_interval;
+
+
+-- Проверим, что делает DBeaver
+SELECT 
+    pid,
+    query,
+    state,
+    now() - query_start as running_for
+FROM pg_stat_activity 
+WHERE application_name LIKE '%DBeaver%'
+AND state = 'active';
+