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Friday, February 20, 2009 8:29 AM

Cursor Types

One of the changes in Microsoft Dynamics NAV version 5, was to change from primarily making use of Fast-Forward cursor types to Dynamic cursors. The same change was implemented in version 4 from build 26410, which is Version 4, SP3 Update6(940718) + KB950920.
Posted by Lohndorf | 3 Comments
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Tuesday, October 14, 2008 10:01 AM

Simple query to check the recent performance history II - now including Query Plan information

One of the queries I use the most, is the pplan-cache query from this post: Simple query to check the recent performance history The good thing about the query is that it shows information that could otherwise require a lot of work (collecting and analysing
Posted by Lohndorf | 2 Comments
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Thursday, September 11, 2008 4:07 PM

Session Monitor for SQL Server 2005

Session Monitor is not a new tool, but it did stop working with SQL Server 2005. So I think that a lot of people stopped using it, which is a shame. The things that were broken now work again, and I would recommend anyone with any kind of blocking problems
Posted by Lohndorf | 2 Comments
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Wednesday, June 11, 2008 4:21 PM

Modern NAV/SQL troubleshooting II

Please refer to this post about what I mean with "modern troubleshooting". This post describes methods that work on any version of SQL Server, including SQL2000. It describes one of the most common questions I get, which is "Where do we start"... General
Posted by Lohndorf | 1 Comments
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Tuesday, June 03, 2008 12:22 PM

Microsoft Dynamics NAV 5.0 SP1 and SQL Server 2000

Microsoft Dynamics NAV 5.0 SP1 introduces a new way to handle SIFT. Instead of maintaining totals in separate tables, Dynamics NAV 5.0 SP1 uses a SQL feature called indexed views. Indexed views will automatically be maintained by the SQL Server. With
Posted by Lohndorf | 4 Comments
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Tuesday, May 13, 2008 9:14 AM

Changes to Microsoft Dynamics NAV 5.0 SP1 with Microsoft SQL Server

I just want to point you to the whitepaper describing the changes done for the Microsoft Dynamics NAV 5.0 SP1 SQL Option: With the release of Microsoft Dynamics NAV™ 5.0 SP1, major changes have been made to Microsoft Dynamics NAV™ with Microsoft SQL Server.
Posted by martinni | 4 Comments
Monday, May 12, 2008 11:35 AM

Modern NAV/SQL troubleshooting

This post is the first in a planned series to describe various "modern" methods for troubleshooting performance problems with Microsoft Dynamics NAV on SQL Server. The idea is also to make the best out of information that already exists, either in other
Posted by Lohndorf | 3 Comments
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Monday, April 21, 2008 7:49 AM

SQLIndex property

In some situations, using the SQLIndex property on a key in Microsoft Dynamics NAV can harm performance. In this blog I describe what to be careful about, and why the use of this property has been removed in the NAV 5 SP1 application. The property is
Posted by Lohndorf | 9 Comments
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Monday, April 14, 2008 11:18 AM

Bulk Inserts in Microsoft Dynamics NAV 5.0 SP1

Bulk Inserts is a new feature in NAV 5.0 SP1 which is designed to improve performance when inserting multiple records by delaying the physical inserts on the SQL Server. Before this change, inserts happen in the order that the C/AL code is running. With
Posted by Lohndorf | 2 Comments
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Friday, April 04, 2008 12:55 PM

My experiences with Microsoft Dynamics NAV 5.0 SP1 …

I spent last week performing a Microsoft Dynamics NAV 5.0 Update 1 to Microsoft Dynamics NAV 5.0 SP1 database conversion for a customer. The process went very smoothly and the customer was very excited about the increase in performance we were able to
Posted by rmiller | 5 Comments
Thursday, April 03, 2008 7:39 AM

SQL Pre-processing in Microsoft Dynamics NAV 5.0 SP1

One of the major changes in Microsoft Dynamics NAV version 5 SP1 (in relation to performance on SQL Server), is a new way to send queries to SQL Server. In previous versions of NAV, we some times saw SQL Server 2005 optimizing query plans for extreme
Posted by Lohndorf | 6 Comments
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Friday, March 28, 2008 8:42 AM

Simple query to check the recent blocking history

SQL Server 2005 keeps (some) history of the number and time that blocking occurred on indexes. This blog contains a query that queries this information to help identifying on which tables blocking happens most. The query shows accumulated numbers (no.
Posted by Lohndorf | 2 Comments
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Tuesday, February 26, 2008 9:29 AM

Index Usage Query

This is a follow up from an earlier blog "Finding Index usage" . In that blog, I described a very simple way to list how indexes are being used. In this blog, the query is much extended so that it now shows your Navision keys, listed by either number
Posted by Lohndorf | 4 Comments
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Wednesday, February 20, 2008 11:49 AM

How to detect locking order for a NAV process

The nature of a deadlock is that two processes lock resources in different orders. Deadlocks can in theory be eliminated by ensuring that all processes always lock resources in the same order. This document describes how to determine the locking order
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Wednesday, February 06, 2008 8:16 AM

Record-level locking in the SQL Server option for Microsoft Dynamics NAV

If you are designing a system for high throughput and want to minimize blocking, it's important to know in advance exactly what kind of locking behaviour to expect. On SQL Server, Microsoft Dynamics NAV uses record-level locking, as opposed to table-level
Posted by Lohndorf | 5 Comments
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