locks and resource types analysis

Author: Alexander Shelemin

locks_transactions_analysis.txt

@@ -0,0 +1,33 @@
+--better/newer sp_lock
+select * from sys.dm_tran_locks
+
+--locks per SPID; only recourse_type OBJECT is shown. Modify "where" clause to get what you want.
+SELECT request_session_id AS session_id,
+    request_owner_id AS transaction_id,
+    DB_NAME(resource_database_id) AS DatabaseName,
+    OBJECT_SCHEMA_NAME(resource_associated_entity_id,
+            resource_database_id) AS SchemaName,
+    OBJECT_NAME(resource_associated_entity_id,
+            resource_database_id) AS ObjectName,
+    request_mode, request_type, request_status,
+    COUNT_BIG(1) AS lock_count
+FROM sys.dm_tran_locks
+WHERE resource_type = 'OBJECT'
+GROUP BY request_session_id, request_owner_id,
+    resource_database_id, resource_associated_entity_id,
+    request_mode, request_type, request_status
+
+
+--transcations per session
+SELECT *
+FROM sys.dm_exec_sessions sessions
+JOIN sys.dm_tran_session_transactions trans
+    ON sessions.session_id = trans.session_id
+
+	
+-- find all suspended transactions (modify as needed)
+
+SELECT session_id ,status ,blocking_session_id, 
+	wait_type ,wait_time ,wait_resource, transaction_id 
+FROM sys.dm_exec_requests 
+WHERE status = N'suspended';

plan_cache_analysis.txt

@@ -15,12 +15,16 @@ go
 
 select * from sys.dm_os_memory_cache_counters order by pages_kb desc
 
--- plan_handle and sql_handle 
+--sql_handle 
 
-SELECT st.text, qs. sql_handle, qs.plan_handle
+SELECT st.*, qs. sql_handle, qs.plan_handle
 FROM sys.dm_exec_query_stats qs
 CROSS APPLY sys.dm_exec_sql_text(sql_handle) st; 
 
+-- get sql test from plan_handle or sql_handle:
+
+SELECT * from sys.dm_exec_sql_text(plan_handle|sql_handle)
+
 -- shows most used adhoc plans; change (or omit) the objtype to get what you need
 
 SELECT st.text, cp.plan_handle, cp.usecounts, cp.size_in_bytes, 

resource_type_locks_deadlocks.txt

@@ -0,0 +1,24 @@
+--deadlock or locking resource_type decyphering
+
+select * from sys.dm_tran_locks
+
+--resource type PAGE
+
+DBCC traceon (3604) --to output dbcc page to SSMS console
+
+select db_name(<dbid>)
+use <dbname>
+
+
+dbcc page(<dbid>, 1, 96859) 		-- example page info from sys.dm_tran_locks
+select object_name(<object_id>) 		-- object_id from Metadata: ObjectId field of dbcc page
+
+-- resource type KEY or RID: get resource_associated_entity_id from sys.dm_tran_locks
+
+SELECT 
+o.name AS TableName, 
+i.name AS IndexName,
+SCHEMA_NAME(o.schema_id) AS SchemaName
+FROM sys.partitions p JOIN sys.objects o ON p.OBJECT_ID = o.OBJECT_ID 
+JOIN sys.indexes i ON p.OBJECT_ID = i.OBJECT_ID  AND p.index_id = i.index_id 
+WHERE p.hobt_id = <resource_associated_entity_id>