Posts Tagged ‘Performance’
This time I would like to share with you something that I recently learned “the hard way” obviously on a support case.
First of all, I want to express the importance of validating your information and that the engineers/partners that are/were involved in your company setup of Dynamics GP were bound to the best practices established by Microsoft and supported by many of my colleagues.
In my case, a customer did a side by side upgrade of SQL, with this came the issue of not having the DYNSA login in the new SQL instance, we followed certain processes to make sure DYNSA was the owner of the Databases Dynamics GP is using.
But you may ask who or what is DYNSA? my friend Mariano Gomez has a post very complete about this subject and you can find it here: Mariano’s DYNSA Info since I am not reinventing the wheel take a look at Mariano’s blog its packed with information for all audiences (GP related !!).
So when I was working on this customer DYNSA setup, I suddenly remembered another case where I was having issues with a third party, I jumped into their environment (literally) and started investigating this DB configuration, to my surprise the owner of the databases was an AD account not DYNSA. I proceeded to replace the owner and then certain SQL reports started working and producing results. I am still intrigued on why, but I will do a full research on spare time.
So back on the game for this customer issue I was having while trying to archive data, just imagine a SOP30300 table with 11 million records and a huge base of customers.
The queries running were taking countless hours to execute not even mentioning the impact on the processor. memory and of course user experience.
I learned that the customer had a “Maintenance Plan” where they executed the Shrink process on SQL, as you may know I am a SQL enthusiast and I recalled an important blog post from another noted resource Mr. Pinal Dave aka “The SQL Authority” here is his post about why is BAD to shrink a DB Shrink is Bad for you… there is one section in the article that explains that Shrinking a DB to obtain disk space will actually fragment your tables, obviously to reduce fragmentation you rebuild indexes. So this maintenance plan was being executed to reduce disk space, then to improve performance, and the disk space was gone again. Wise words from a mentor that prefers to be in the shadows once said “with current prices on storage why waste time shrinking when you can focus on performance”.
I ended up tweaking some SQL scripts to automate a SQL job on finding fragmented tables in the DB and executing that as part of DB maintenance, as I said “go buy another disk drive and add it to your server, move the logs to this new disk and keep data apart from the logs and you will be better than now”.
I hope my experience helps you for a better community.
Until my next post
Francisco G. Hillyer
David Musgrave has compiled a list of statements that have fallen into Fact or Fiction area he has now enlightened us unveiling the truth behind Support Debugging Tool.
The myths around this tool are the following:
The SDT is hard to install?, hard to setup?
can only capture logs?, SDT creates tables at the SQL Server level?
The SDT causes performance problems
The SDT has features that are dangerous
The SDT is Microsoft’s most guarded secret
The SDT will make you more attractive to the opposite sex
The SDT will regrow hair
The SDT was created by advanced aliens, David just stole their technology
And a lot more if you want to be on the ring of power
Click on the following link to know the truth