Navision Slow on SQL Server

Dynamics NAV (Navision) Slow on SQL Server

Many users experienced Navision getting slower and slower as time went by. There are many factors that can affect the performance of Navision on SQL Server. It can be hardware bottleneck, database design problem or even coding design problem. Below are a few areas that you can look into if your Navision SQL Server is getting slower.

Run Optimize function

This is the easiest thing you can do. The Optimize function will drop and rebuilt indexes for your tables. SQL Server performance can be very much affected by the Index. If you experienced slow in Navision but never do optimization, do it as soon as possible. Don’t wait. The Optimize function can be accessed from

File –> Database –> Information.

Select the table that need to be optimized and click on the Optimize button.

The Optimize function will rebuilt the keys in the selected table and all the related SIFT Tables. Besides rebuilding indexes, the Optimize function will also remove all records with zero values in all the sum fields in SIFT tables. This can free up space and improve speed in updating SIFT records.
I have seen people complaining Navision is very slow but when I asked them, have you ever run the Optimize function from Navision or do any SQL Server Reindex. Surprisingly, they said we never run the Optimize function and we never do SQL Server Reindex since day one we implement Navision. I asked them to schedule a downtime and run the optimize. After run the Optimize function, they find the performance improve significantly.

Interesting Forum discussions on Navision slow on SQL Server:

Mibuso – slow navision on SQL

Navision-SQL Server Performance Specialist

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