AUTOGROW_ALL_FILES and MIXED_PAGE_ALLOCATION replaced trace flags 1117 and 1118, which once made tempdb grow its files together and use whole extents. This post checks the flags on a server, reads the settings that replaced them and demonstrates both on a demo database. It also says what to do with a startup parameter that still names them.
SQL SERVER – Error 15580 – Cannot Drop Master Key Because Dialog “GUID” is Encrypted by It
In this blog, I would share my knowledge about how to fix error 15580 – Cannot drop the master key because dialog “GUID” is encrypted by it.
How to Forecast the Size of Restore of Backup in SQL Server? – Interview Question of the Week #265
Question: How to Forecast the Size of Restore of Backup in SQL Server?
Answer: Recently, I had discussed this in consulting engagement:
Encrypted by Database Master Key: Fix the Always On Error
Adding a database to an availability group can fail with the message that the database is encrypted by database master key, even when TDE is off. This post finds the key, checks what depends on it and lists three ways to continue. A demo database shows the checks and the error that protects a key still in use.
Last Query Cost in MySQL: Read It With SHOW STATUS
The last query cost in MySQL is a number the optimizer computes for the last query it compiled, and SHOW STATUS LIKE ‘Last_query_cost’ returns it. This post shows the command on a Sakila query, explains what the number means and where it misleads. It also points to EXPLAIN FORMAT=JSON for the cost of each part of a plan.
SQL SERVER – Linked Server Error – Msg 3910 – Transaction Context In Use By Another Session
In this blog, I would share my understanding and the solution of Linked Server Error – Msg 3910 – Transaction context in use by another session.
How to Measure Resource Status on Azure? – Interview Question of the Week #264
Every single time when I start working with Azure, I always want to know what is the status of Azure resource status or consumption in the last hour.