In this blog I would share my learning about fixing error LogonUserExEx fails for user & GetToken – Logging on as the CNO failed with error 1326.
SQL SERVER – PolyBase Error Msg 46530 – External Data Sources Are Not Supported With Type GENERIC
In this blog, I would share my findings of error Msg 46530 – External data sources are not supported with type GENERIC. Let us read more…
How to Decode @@OPTIONS Value? – Interview Question of the Week #268
How to decode @@OPTIONS value? Session-level SET options live in the @@options variable, and this script turns that number into readable settings.
SQL SERVER – What do These Messages Mean – “I/O is Frozen on Database” and “I/O was Resumed on Database”?
“I/O is frozen on database” and “I/O was resumed on database”? Did you check the air conditioner temperature? Let us learn about it in today’s blog post.
Scheduler ID Values in dm_os_schedulers: What the Big Numbers Mean
Scheduler ID values in dm_os_schedulers run from 0 up to a few thousand, and then jump past one million. This post groups the rows into user, dedicated admin connection and hidden schedulers, and shows the filter that keeps CPU scripts honest. It also shows why filtering on the number alone is fragile.
Active and Inactive VLFs: List Them for Every Database
To list active and inactive VLFs for every database, count the rows of sys.dm_db_log_info by vlf_active and read the log reuse wait next to them. This post builds a demo log with 24 VLFs, shows how an open transaction and small autogrowth steps add more, and fixes the count with one shrink and one regrow.
KEEP PLAN Hint: Cut Temp Table Recompiles in SQL Server
The KEEP PLAN hint gives a temp table the same recompile threshold as a permanent table. This post counts statistics recompiles with Extended Events for a plain query, a KEEP PLAN query and a KEEPFIXED PLAN query. It shows where the hint helps, where it does nothing and what the stronger hint costs.