microsoft sql server cluster
Sunday, July 25th, 2010
Using MSDTC as a clustered resource is not sql server database Corruption Case
In Microsoft SQL Server, MSDTC (Distributed Transaction Coordinator Microsoft) allows the client application for inclusion of various sources of data in a single transaction. These transactions coordinates distributed transactions across commit all servers, which are listed in the transaction. MSDTC is a transaction manager that is actually a Windows process. In some situations, this administrator transaction can cause several critical issues in SQL Server, if not properly configured to cause damage to the database. In such cases you have to go for SQL data recovery solutions for mission-critical to get your data back.
Microsoft supports running MSDTC services only on the cluster nodes as clustered resource. Not recommended to run the MSDTC in a standalone mode on the group. It is not even supported in most cases. Using MSDTC as a non-clustered resource on a cluster of Microsoft Windows can cause several problems. Such a configuration is quite problematic, because the transaction can not be orphaned and can be found, the corruption of databases in any cluster failover occurs.
Rebuilding MSDTC in ms sql server failover cluster servers:
In order to reconstruct the MSDTC and not perform SQL server recovery, follow the steps exercised:
Change all SQL Server services in manual mode.
Close the Control Panel and restart the server. It erases the memory of DLLs that are loaded by the SQL Server services. If not, these services remain in the memory of the server and keep a lock on the server resources system server.
Remove the following registry keys:
HKEY_CLASSES_ROOT CID
HKEY_LOCAL_MACHINE SOFTWARE Microsoft MSDTC
HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services MSDTC
HKEY_LOCAL_MACHINE SYSTEM ControlSet0 Services MSDTC
HKEY_LOCAL_MACHINE SYSTEM ControlSet1 Services MSDTC
HKEY_LOCAL_MACHINE SYSTEM ControlSet2 Services MSDTC
HKEY_LOCAL_MACHINE SYSTEM ControlSet3 Services MSDTC
Delete Z: MSDTCLog directory.
Remove all DLLs.
Run Dtcsetup.exe on first node.
Run Dtcsetup.exe the second node, if requested.
After making Click the OK button on the second node, you can click the OK button on the first node, and reboot the system.
The above method can rebuild MSDTC in most cases and solve related problems. However, if the problem is caused by database corruption due to use of MSDTC in a non-clustered resource, does not work. In such critical situations, a current backup is a great help. However, if backup is not current, MS SQL repair becomes in need of hours.
SQL is the recovery potential through powerful third party applications and advanced. These instruments are powerful enough to methodically scan the database and extract all data inaccessible to her. They are fairly safe and easy to use.
Stellar Phoenix SQL recovery software repairs and restores damaged SQL Server data in all stages of corruption. The software works well with microsoft sql server 2008, 2005 2000. Resets all database objects like tables, reports, forms, macros, triggers and stored procedures.
About the Author
My name is Mark Willium, I have done Ph.D in computer science and currently doing research on how to recover and repair corrupted sql database. During research found many repair & recovery software for SQL database some of them are sql recovery, mdf recovery, sql repair, mdf repair and many more.
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