Linked Server Selection Query Fails with "MS DTC has stopped this transaction"
Hi everyone, I’m currently setting up a Linked Server from our head office (server A) SQL Server to a subsidiary unit (Server B) SQL Server. The Linked Server connection tests successfully, and I can log into server A from server B and can using query. However, when I try to execute a query using a 4-part name through Linked server, I encounter the following error: Msg 8522, Level 16, State 3, Line 1 Microsoft Distributed Transaction Coordinator (MS DTC) has stopped this transaction. Environment Details: Head Office (server A) SQL Server: SQL Server 2008 R2 (already upgraded pack SP3) Windows Server 2012 TLS 1.2 enabled MS DTC service is turned on Subsidiary (server B) SQL Server: SQL Server 2016 Windows Server 2016 Standard (64-bit) TLS 1.2 enabled MS DTC service is turned on Networking: The B server connects via VPN to be on the same network as server A Ping and Telnet tests (IP and port) from both sides work fine SQL login from server A to server B(via IP and port) is successful USING PROVIDER: i have try to using SQLNCLI11 and MSOLEDBSQL, but both till error DTC. Linked Server test connection: Success Update, insert query: it's ok, but when i try selection query, i got error DTC has stop this transaction. example: SELECT * FROM [LinkedServerName].[DatabaseName].[dbo].table Has anyone faced a similar issue? Could this be a MS DTC configuration mismatch or network security/firewall/DTC port range issue? Any guidance on how to properly configure MS DTC across different servers/domains/VPNs would be highly appreciated. Thanks in advance!
Min and Max memory setup on SQL server
We are running a BT 2010 environment which processes over 150,000 messages per day during the peak business hours. We have an SQL Server instance running on a separate Windows server 2008 R2 instance. For past few weeks, we are experiencing intermittent outages and the error logged on BizTalk APP server says "Login is from an untrusted domain.....". upon checking the logs on database server we have NETLOGON errors (unable to contact AD for credential validation) due to "Unavailable Memory". CPU Utilization and Memory utilization is 95-100% on SQL server most of the times. Following are the settings on SQL server - RAM: 16 GB, SQL Server Min and Max memory Allocation is 12 GB. ENTSSO is also running on the same SQL server. Please suggest any change in setting on SQL server which can reduce High Utilization and free up some memory for background windows processes and ENTSSO.
