On Saturday, April 27, 2013 at 12:11:56 AM UTC-7, Peng Liu wrote:
My C++ code accesses SQL Server by ODBC driver 2.x, and calls SQLSetConnectAttr( pMSSQLHandles->hDbc, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF, 0 );
to set the transaction to implicit transaction. I also call SQLEndTran() to commit the transaction.
After my application starts， in SQL Server 2008 Managment Studio, run "DBCC OPENTRAN", no active open transaction is reported. And "select @@TRANCOUNT" return 0.
However, if run
select * from sys.dm_tran_session_transactions
we can see there is one record， and we can also find the transaction corresponding to this record in sys.dm_tran_active_transactions.
Below SQL script will return 1 records.
select s.dbid, s.spid,s.loginame, s.status,d.name,s.last_batch,datediff(minute,s.last_batch,GETDATE()) as IdleTimeInMin,
s.open_tran,t.text
from sys.sysprocesses s
join sys.databases d on d.database_id = s.dbid
cross apply sys.dm_exec_sql_text (s.sql_handle) t
where d.name = 'XXX' and s.loginame <> 'sa'
order by s.last_batch
I am curious that which method is the exact one to get all the not-committed transactions.
What is the meaning of the records in dm_tran_active_transactions, dm_tran_session_transactions and dm_tran_database_transactions?
What is difference between Open transaction and active transaction?
Thanks in advance.
I am using this script.
SELECT
tdt.transaction_id
,tst.session_id
,tdt.database_transaction_begin_time
,CASE tdt.database_transaction_type
WHEN 1 THEN 'Read/write transaction'
WHEN 2 THEN 'Read only transaction'
WHEN 3 THEN 'System transaction'
END transaction_type
,CASE tdt.database_transaction_state
WHEN 1 THEN 'Transaction not initialized'
WHEN 3 THEN 'Transaction has not generated by any log'
WHEN 4 THEN 'Transaction has generated by log'
WHEN 5 THEN 'Transaction Prepared'
WHEN 10 THEN 'Transaction Committed'
WHEN 11 THEN 'Transaction Rolled back'
WHEN 12 THEN 'Transaction committed and log generated'
END transaction_state
FROM sys.dm_tran_database_transactions tdt
INNER JOIN sys.dm_tran_session_transactions tst
ON tst.transaction_id = tdt.transaction_id
For more SQL Server DBA script please visit this url:
http://www.dbrnd.com/category/script/
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)