Hi,
Yesterday in our production environment we experienced a very weird occurrence. At a certain point and time in the day every query that would execute against our SQL 2008 R2 instance would become deadlocked. We cleared all of the locks; however, the locks would still persist once an application tried to execute any stored procedure or query. After some time we shut down all of our application servers, and eventually rebooted them, along with the SQL Server. We also removed every possible connection to the SQL instance, and tried executing a stored procedure manually with profiler turned on, but profiler itself would become locked. After several failed hours of attempting to determine, using every tool at our disposal, why simple stored procedures, or queries would suddenly create locks within a database, it just up and decided to start working again with no problem. Does anyone know why something like this would occur. The SQL logs looked fine, Perfmon showed the disks to be fine, and, like I said, Profiler would just lock up. Just a side note, the application servers are VMs using different versions of .net and uses IIS as a web server.
Thanks,
Jarred