Troubleshooting code issues in production is always a challenge, without affecting the performance of the application. Usually we are tied to application logging or tools like the ones from Sysinternals to have a quick pick under the hood. In this article I am going to introduce VSPerf, a component from Visual Studio with which you are able to profile applications on Windows 2012/Windows 8 or later.
SQL Server Administration Blog
Friday, August 25, 2017
Friday, March 10, 2017
SPN's deleted during cluster failover
This article is
describing SPN’s disappearing while failing over a clustered
instance. But this behavior can be applicable also to other services.
Sunday, February 5, 2017
NUMA configuration issues on VMs running SQL Server
Non-uniform memory access (NUMA) is a computer memory design
used in multiprocessing, where the memory access time depends on the memory
location relative to the processor. Under NUMA, a processor can access its own
local memory faster than non-local memory (memory local to another processor or
memory shared between processors) 1
While configuring a SQL Server environments, it is very
important to understand the underlying NUMA architecture. SQL Server has its
own scheduling system, the User Mode Scheduler (UMS) which is NUMA aware.
Thursday, August 4, 2016
Transfer Logins Task fails with the error message: "Set Database failed. "
Description:
While migrating the logins with the "Transfer Logins Task" from SQL Server Integration Services (SSIS) you might receive the following error message:Error: Execution failed with the following error: "Set Database failed. ".
Error: Execution failed with the following error: "Value cannot be null. Parameter name: database".
Thursday, June 2, 2016
SQL Ser 2016 Setup - The service did not respond to the start or control request in a timely fashion.
Wednesday, February 25, 2015
Flat File Destination failed the pre-execute phase and returned error code 0xC020200E.
On SQL Server 2012 (or newer), when you are running a SSIS package (which accesses a network share), you can retrieve the following error message:
Flat File Destination failed the pre-execute phase and returned error code 0xC020200E.
and
Cannot open the datafile "\\<remoteserver>\<remotefile>"
Flat File Destination failed the pre-execute phase and returned error code 0xC020200E.
and
Cannot open the datafile "\\<remoteserver>\<remotefile>"
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