DBCC FLUSHAUTHCACHE clears the authentication cache of an Azure SQL database, so open connections must authenticate again. This post shows what a password change does to open sessions on SQL Server, why Azure SQL needs the extra command and how to list the sessions you want to end. It also covers the cautions that matter.
Removing a Bad Plan From Cache Without Clearing Everything
Remove one bad plan from cache by handle, compare narrower recompilation choices, and fix the cause so the plan stays healthy.
What are the Different Types of SQL Server CHECKPOINT? – Interview Question of the Week #230
Question: What are the Different Types of SQL Server CHECKPOINT?
Answer: There are four different kinds of checkpoints in SQL Server.
Personal Technology – Blinking or Flashing Yellow Light in Alexa – Solution
Yellow Light on Alexa with no messages? Check notifications and reminders, then adjust Amazon Shopping alerts without silencing everything.
Drop Tables by Prefix in SQL Server and Azure SQL Database
To drop tables by prefix, list the matching tables first and drop them with a script that quotes every schema and table name. This post shows why the underscore in a prefix is a trap, a one-statement version and a cursor version. It works in SQL Server and in Azure SQL Database.
Performance Condition Alerts: Warnings Before a Log File Fills
Build performance condition alerts for log usage, tempdb free space, and blocking, with sensible delays and an operator response.
TempDB Performance: Five Settings to Check in SQL Server
TempDB performance depends on five settings that you can read in a few minutes: how big it is, how many data files it has, whether they match, how it grows and where it lives. Three read-only queries check each one. The post also explains what to do with the answers.