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Results tagged with dmv
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user 426
DMV in SQL Server is a catch-all term for Database Management Views [& Functions]. Technically they are all now DMOs (Database Management Objects) however the term DMV is still widely understood and accepted by most.
11
votes
Accepted
Setting READ UNCOMMITTED when reading DMVs
As one of the guys writes demo DMV queries that way, I'll explain why.
Does it matter if you're only querying DMVs? No. … But sooner or later, you're going to take one of your DMV scripts and tack on a join to sys.databases or sys.tables or some other system object in order to get more information about what you're looking …
- 43.2k
6
votes
Is there DMV for seeing view access count?
No, but what the presenter was probably doing was using Grant Fritchey's technique to search the plan cache for a string. You can search the plan cache for your view name.
That technique has a few dr …
- 43.2k
5
votes
Accepted
Why are these two HADR DMVs reporting different states?
Here's the Connect item on one of the bugs we've run into where that DMV stops refreshing - note in the comments that log_send_queue_size in the DMV sys.dm_hadr_database_replica_states shows 0 even when …
- 43.2k
0
votes
Resource Pool Stats Counter Reporting Zero
You posted a bug on this at Microsoft Connect:
SQL Server 2016 SQLServer:Resource Pool Stats:CPU usage target % Always Returns Zero - by HunterX3
Given that Microsoft didn't respond there either, it …
- 43.2k
5
votes
Poor Performance Running dm_exec_query_stats
Nick Craver ran into performance issues with this too in Opserver. Here's the query he ended up with after working directly with MS folks on the query plan - the joins look kinda contorted, but as I r …
- 43.2k
2
votes
Centralized Logs (error, deadlocks, slow queries) For SQL Servers
You're asking a few different questions:
Where can I find errors? Deadlocks? Slow queries? Each of these is its own question, each with separate answers. SQL Server doesn't store those three separat …
- 43.2k
13
votes
Accepted
CPU Usage Incorrect in sys.dm_os_ring_buffers
Microsoft says that DMV (ring buffers) doesn't work on SQL Server 2017, only 2019:
Sys.dm_os_ring_buffers DMV has been a key DMV used for monitoring SQL
Server by built-in tools as well as third … When SQL Server 2017 was released on Linux, unfortunately this DMV did
not return correct CPU usage information by SQL Server process. …
- 43.2k