Figuring out Time-Out Prone queries

Recently, I was helping one of the community attendees on the SQL Server Query Time-Out issue. Once we are done with troubleshooting, he asked a very excellent question; “I am dealing with very critical OLTP systems. As my company has been expanding the business, the data is rapidly growing. It is causing a lot of […]

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SQL Server 2017 – DMV – sys.dm_os_host_info

I always love to get my hands dirty with new features of SQL Server. I was exploring SQL Server on Linux, and at a point, I had to check the operating system details of the Linux system. Being lazy to figure out Linux OS command to check the operating system details, I started figuring out […]

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SQL SERVER DATABASE FILES WISE I/O LATENCY PART#2

Since the DMF sys.dm_io_virtual_file_stats shows cumulative I/O statistics value for the database files, you can’t just use the DMF to shoot a conclusion that the database files are experiencing high latency issue. The reason is the overall aggregation will mask spikes of poor performance. It is recommended to capture the latency data over a period […]

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SQL Server Database Files Wise I/O Latency Details PART#1

One of the real-world I/O troubleshooting problems is – If you have your databases spread across multiple LUNs and you want to find out which database files are experiencing high latency issues and driving the most I/Os to storage subsystem using performance counter (Avg. Disk sec/Read & Avg. Disk sec/Write). The counter doesn’t help you to identify […]

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SQL Server 2017 – DMF – sys.dm_db_log_info

The release of Microsoft SQL Server 2017 brought a lot of very interesting new features. One of them is the addition of DMF sys.dm_db_log_info. It allows having a look at the structure of the transaction log without using the undocumented DBCC LOGINFO command.  DMF – sys.dm_db_log_info It returns VLF information of the transaction log file […]

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SQL Server 2017 sys.dm_os_enumerate_fixed_drives

In SQL Server 2017,  you can use the new DMV sys.dm_os_enumerate_fixed_drives to identify free disk space. The DMV is replacement of xp_fixeddrives. Old way

New Way

I wish Microsoft could have included the capacity of the drive. Not including the drive capacity requires the DBA to perform additional computations to extract the information. […]

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