SQL Server rebuild index and reorganized index, slowness problem

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Posted on by Faruk Durak

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Some stock screens are running slow in Ax, when I follow the queries on SQL Activity Monitor, I get the following result.

Here it gives a warning about Indexes, but when I check fragmentations, there is no problem.

I have an automatic rebuild index and reorganized index made every night for the InventDim table. However, sometimes it slows down and I manually rebuild index and reorganize index.

Sometimes even these don't work and I have to restart AOS, SQL servers.

What could be the source of this slowness problem? How can I solve it?

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Faruk Durak 109 on at

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RE: SQL Server rebuild index and reorganized index, slowness problem

Hey Martin,

thanks for your interest. Ax is running slow sometimes, what would you suggest I check when it runs slow?

I think it's a slowdown that concerns SQL in general, like TempDBs. I have read and followed the recommendations for TempDBs but It's not works for me.
Martin Dráb 232,000 Most Valuable Professional on at

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RE: SQL Server rebuild index and reorganized index, slowness problem

I don't see any warning regarding current indexes. What SSMS says is that adding a new index on InventSum would help this query. Rebuilding existing indexes is fine, but it's not related to this topic.

Note that you shouldn't add every index that is suggested in this way. Review the suggestion and consider whether adding such an index is really a good idea.