Wait Statistics
The first post about waits on SQL Server was regarding what SQL Server Wait means, a brief explanation and the
Locks everywhere
In this post I’m going to talk about locks on SQL Server. Locks are necessary, they are used in all
Simple way to understand transaction isolation levels
I was talking with a friend about how a database works and she asked me to explain transaction isolation levels
Memory-optimized Logging
In a previous post I talked about transaction log works, and what about using a memory-optimized table? SQL Server has
What the Checkpoint does?
Checkpoints flush dirty data pages from the buffer cache of the current database to disk. This minimizes the active portion
VLF (Virtual Log Files)
To see how many VLFs you have solely look at the number of rows returned by DBCC LOGINFO. The size
There is insufficient system memory in resource pool
Doing crash and recovery tests on my local machine I got the SQL Server instance not going online. After trying
Query Store Usage Scenarios
What is Query Store? Query Store is a tool to troubleshoot query performance by capturing a range of information about
SQL Server Undocumented 2
One more undocumented function/commands. The fn_dump_dblog function is used to read transaction logs from a log backup file. This is
Logging
Every database has a transaction log that records all transactions and the database modifications made by each transaction The transaction
