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https://www.sqlskills.com/blogs/glenn/sql-server-diagnostic-information-queries-for-december-2019/ Semi-random musings about SQL Server performance Sun, 03 May 2020 23:56:03 +0000 hourly 1 https://wordpress.org/?v=6.9.4 https://www.sqlskills.com/blogs/glenn/sql-server-diagnostic-information-queries-for-december-2019/#comment-271730 Tue, 10 Dec 2019 14:42:38 +0000 http://3.209.169.194/blogs/glenn/?p=1766#comment-271730 Hi Glenn,
There is a section IOWarningResults in diagnostics scripts that reads data from ERRORLOG (I/O requests taking longer than 15 seconds).
If the actual number of ERRORLOG files is less than 5 then query execution fails.
I think It’s worth to enumerate the list of errorlog files and use cursor instead of explicit commands like “EXEC xp_readerrorlog X”.
But it requires to temporarily enable xp_cmdshell.
Or at least add RAISERROR to skip this section in case if error and continue with the following checks.

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