All Questions
Tagged with waits sql-server-2019
5 questions
0
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2
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What wait types would terrible RCSI performance cause?
Read Committed Snapshot Isolation (RCSI) is well-understood. The key way that it can cause performance bottlenecks is if the version chains get too long. Are there any wait type that indicate this ...
- 801
4
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Does a query that is suspended due to an ongoing ASYNC_NETWORK_IO cause blocking?
I am looking at the dm_exec_sessions and requests DMVs on a production server. There are some queries with status 'suspended', a duration of 12 minutes, and a wait type of ASYNC_NETWORK_IO.
I ...
- 3,499
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1
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Diagnose the exact cause of WAIT_ON_SYNC_STATISTICS_REFRESH
We are currently facing query timeout issues with our online API .
The related request is an ad hoc select query referencing two tables.
In Redgate, we see that each time the request is blocked, it's ...
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2
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Does ASYNC_NETWORK_IO wait types result in thread locking until entire result is consumed by client application?
ASYNC_NETWORK_IO wait types are mostly caused because the client application cannot process the data that arrives from SQL Server fast enough.
As the query executes, and as the results start getting ...
- 3,499
2
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2
answers
2k
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dbcc checkdb runs for interminably long time, 50% of the time
I've got a nightly maintenance job (largely taken from the ola hallengren maintenance package) that runs database backups and runs an an integrity check on every database.
The integrity check part is ...
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