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Curated SQL Posts

Azure Data Studio November Update

Published 2022-11-21 by Kevin Feasel

Timi Oshin and Erin Stellato have an update for us:

In this release of Azure Data Studio, we have exciting news to share across several of our core features and extensions. The first is the announcement of the general availability of Table Designer and Query Plan Viewer. We would like to extend a huge thank you to our engineering teams who have worked tirelessly over the past few months on improvements to these features. We would also like to thank the MVPs and community members who provided feedback on these features. We are grateful for continued engagement from users as we work to make Azure Data Studio the tool of choice for cloud database management across multiple platforms.

There’s a lot in this release, so check out the full changelog.

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Troubleshooting Caching in Shiny

Published 2022-11-18 by Kevin Feasel

Thomas Williams illuminates us on the caching process:

Caching in R Markdown is a valuable step to get your app, report or visualisation more production-ready. There are one or two potential issues to watch out for, especially when deploying a cache-enabled R Markdown file to a Shiny server – in this post I’ll go over some of these “gotchas”, and how you could address each one.

Click through for those three gotchas.

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Tips for Large Table Data Archival

Published 2022-11-18 by Kevin Feasel

Aaron Bertrand follows up on a prior post:

As soon as you realize your growth rates are higher than expected, you need to plan to buy or allocate more disk space. There is no way around this—more data means more disk. You can delay the inevitable for a little bit with better compression, but this is not a long-term fix, and it can impact query performance in different ways (trading CPU for I/O).

Once more disk is in place, you can plan your growth better.

Click through for some guidance on how to plan that growth.

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“The Function Requested Is Not Supported” Errors on Availability Groups

Published 2022-11-18 by Kevin Feasel

David Fowler troubleshoots an issue:

Checking the logs on the secondary, it was littered with ‘Database Mirroring login attempt failed with error: ‘Connection handshake failed. An OS call failed: (80090302) 0x80090302(The function requested is not supported).’ messages. The primary server wasn’t able to authenticate with the secondary, but why? Everything looked ok as far as I could see.

Click through for the fruits of David’s labor.

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Transaction Log File Autogrowth in SQL Server 2022

Published 2022-11-18 by Kevin Feasel

William Assaf mentions a welcome change to SQL Server 2022:

Starting with SQL Server 2022, transaction log file growth events up to 64 MB in size can benefit from instant file initialization (IFI). As usual, the transaction log is otherwise unable to benefit from instant file initialization. 

This should be a big performance improvement if your transaction log files unexpectedly grow. Of course, you should try to avoid autogrowth events altogether. 

The prior default of 10% autogrowth has led to so many problems over the years. I’d like new database files (MDF and NDF) to have a similar default as well.

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How to Disable a SQL Agent Job via Powershell

Published 2022-11-18 by Kevin Feasel

Tom Collins gets a question:

I have a  SQL Server Agent job  in a disabled status. The disabled status is  applied to the SQL Agent Job and the associated schedule.  The problem is I’m logged on as a full administrator onto the Windows Server – and as BUILTIN\Administrator is defined on the SQL Server , but am able to manually override the SQL Agent Job.   

Is there a way to Disable the SQL Agent Job where I’m not able to manually override the job?

Click through for the answer.

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Diagnosing Customer Rebalance Time Issues in Kafka

Published 2022-11-17 by Kevin Feasel

Danica Fine and Nikoleta Verbeck continue a series on Kafka performance troubleshooting:

At the surface, rebalancing seems simple. The number of consumers in the consumer group is changing, so the subscribed topic-partitions must be redistributed, right? Yes, but there’s a bit more going on under the hood and this changes depending on what kind of rebalancing is taking place.

Read on to learn more about how Kafka performs rebalancing and what might affect performance.

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