Viewing 15 posts - 2,386 through 2,400 (of 22,227 total)
SQL Server 2014 introduced a new cardinality estimation engine. Any migration from a version of SQL Server prior to 2014 to post 2014 has to deal with this issue. In...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
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SQL Server Query Performance Tuning
August 28, 2019 at 11:09 am
It shouldn't matter, but go and get the latest cumulative update. You shouldn't be running RTM at this point.
I'm unsure what the issue is. I do this kind of monitoring...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 28, 2019 at 10:42 am
Look down below in the details. Is there a second tab? I'll bet there is.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 27, 2019 at 3:46 pm
Causality tracking won't prevent it from capturing the deadlock graph. I think the issue likely lies in the is_system filter. You're not looking for system issues, you're looking for user...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 27, 2019 at 12:52 pm
You can't bypass it. If you really need everything in views (and not seeing your code, I can't support whether that's a good idea or not), then I'd suggest five...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 27, 2019 at 12:46 pm
Best to only ask a question once. Most of us look at a lot of forums, so we're likely to see it. Plus, any discussion will take place in more...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 27, 2019 at 12:45 pm
Pretty much yes. The index usage stats are just one piece of information. However, it's not dispositive information. It's a part of the whole puzzle. The whole puzzle very much...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 26, 2019 at 12:03 pm
The data in the deadlock graph includes the sqlhandle. You can use this against either the DMVs or Query Store (if it's enabled) to retrieve query information. The sqlhandle is...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 25, 2019 at 11:09 am
So, if you're getting lots of deadlocks (massive performance hit by the way, it's not just about the deadlock itself, every time it happens, you're rolling back transactions, causing additional...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 23, 2019 at 5:33 pm
Looks like a pretty straight forward issue. You've got two different delete statements running from one process, looks like both reference the same lock_group_str and then the update is running,...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 23, 2019 at 3:36 pm
Seeks are great! Don't complain.
However, they're only great when returning smaller sets of filtered data. For very large data sets or no filtering, scans are better. You should see a...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 23, 2019 at 12:42 pm
So, the deadlock graph didn't upload. You'll need to do a little more formatting to get it here and/or post it to a file share somewhere and post the link.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 23, 2019 at 12:40 pm
Interesting. I've only ever tested it going to Azure SQL Database. I'm not sure why you'd need it for a VM migration unless it's somehow testing the upgrade from some...
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 22, 2019 at 6:09 pm
Happy to hear that things are working. Come back with questions any time.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 22, 2019 at 6:06 pm
Don't reorganize ever. It's a waste of time. However, it's a particular waste of time on columnstore indexes. Rebuild or don't. That's it.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
August 22, 2019 at 1:59 pm
Viewing 15 posts - 2,386 through 2,400 (of 22,227 total)