At first I thought starting SQL Server in Single user mode is easy in Windows 2008 fail-over cluster. But I was wrong, If I just add ‘;-m’ in start-up parameter and starts it, the SQL server will start in single user mode via cluster. But we wont be able to log in. The cluster service logs in before us. And so we might see an error like below.
Login failed for user ‘Domain\user’. Reason: Server is in single user mode. Only one administrator can connect at this time. [CLIENT: xx.xx.xx.xx]
Now what do we do? Below is how I overcame this problem.
Take the SQL Server cluster group offline.
Now just make the Disk and the cluster virtual name alone online for the SQl Server Cluster group.
start command prompt with admin rights and type below command.
net start “SQL Server (instancename)” /m
Open a command prompt with “Run as Administrator” option and now you can login to SQL Server via sqlcmd with any account that has access to SQL Server or an account that has admin rights on the Operating System.
Technology enthusiast Sherbaz is a Microsoft certified SQL Server Subject Matter Expert. He had fun automating day to day task to achieve management goals. He has extensive hands-on experience in high availability deployments and support with several years of industry experience performing SQL Server installations, configuration, maintenance, backups, performance tuning, Transactional & P2P replication, migration, high availability solutions (Always on, Failover Clustering, Logshipping and Mirroring) and Disaster recovery.
Sherbaz also has basic hands-on experience in other DBMSs like MongoDB, Oracle 9i, 10g, Sybase and MySQL. 1 year on Mongodb, Oracle 9i & 10g. Completed M102 & M202 courses in MongoDB.
Sherbaz spends his spare time with automation in electronics, embedded system circuits and IOT in his private lab at home.
Also, he supports his customers and users at www.SplitExpense.in for issues with app, website or telegram chat bot @SplitExpenseBot https://t.me/SplitExpenseBot. @TheSherBot https://t.me/TheSherBot is another telegram chat bot, partially artificial intelligent, programmed and maintained by him on python and backend Mongodb database.
Sherbaz always showed interest learning new technologies and to think out of the box bringing innovation in work. Some of his work is documented @ www.sherbaz.com.
He is now busy learning 3D modeling software on his roadmap towards building his next hobby build, A 3D PRINTER.
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