Performance problem

xavigepe · 2007-12-17

Hi. I'm working with version 4.0 SP3 with SQL Server database. Sometimesn, I found in some clients very slow performance. When this happens nobody is doing any special process in the database as we are just beginnig the user trainning and the rest of users are not working with Navision yet. Checking Database information -> Sessions I find the column "Physical I/O" with very high levels in the client which has slow performance and with this client not doing anything special. Could anybody tell me how I can handle this or where could I found information about it?.

Thanks so much,

vikram7_dabas · 2007-12-18

Firstly click on Tools->client monitor.then start doing ur processing whatever u wants after this again go on Tools->Client monitor there u'll find all things that hwere processing is slow.

Marije_Brummel · 2007-12-18

This might be the SQL2005 issue where it picks the wrong index.

There is a whitepaper about this at

http://www.mibuso.com/dlinfo.asp?FileID=896

Good luck!

hawwa · 2007-12-21

If the slow performance occurs once a while and during the slow period, SQL Server takes up a lot of resources, one of the possible reason is SQL Server is doing Page Split. When Page Split occurs, data is physically moved around to make the B-Tree balanced. Page Split that happens at the top portion of the B-tree node in SQL Server can create substantial amount of overhead.

kriki · 2008-06-05

[Topic moved from Navision forum to SQL Performance forum]

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