SQLDIY

Finding SQL Server Installs with Powershell, Again

But the SQL Listener isn’t started!

Yep, I heard you loud and clear. There is more than one way to find SQL Server on your network. This time we will dig deep into the TDS protocol docs again along with a bit of guess work.

Old Dog New Protocol Plus PowerShell

Last time we used PowerShell and the .net framework to assemble a UDP packet and send it to port 1434. This works out just fine if you have the SQL Browser running. If you are running a single standalone instance on the default port the browser service isn’t needed and may not even be enabled. This time we will be using TCP instead of More >

Parsing Glenn Berry’s Diagnostic Information Queries With PowerShell

Do It In Bulk

I usually don’t run queries on just one server. Most of the time I need to get some piece of information from dozens if not hundreds of servers at a time. I also really like Glenn’s diagnostic queries and use them regularly with some modifications and additions of my own. I’m also really digging PowerShell too.

You Got Your Queries In My PowerShell

PowerShell is a very powerful way to gather information across lots of servers. I’ve got a set of templating files that drive my PowerShell scripts and thought I’d apply some of that to Glenn’s queries. The result is a function that More >

SQLDIY: Index Usage Statistics

There are several different aspects of indexes that can be monitored via DMV’s. One the neatest things is just how much your indexes are used, how they are used or if they are used at all! I’ve put together this stored procedure to gather a ton of useful information on just how your indexes are being used. Using this information you can determine if the index in question is really needed, or if it is truly critical and shouldn’t be messed with. As will all DMV’s if your server was just rebooted you may see quite a number of unused indexes. By sampling data over time we can see when an index More >

SQLDIY: Index Fragmentation Levels

Indexes, indexes, indexes my kingdom for an index! Well, something like that. Indexes are the single most important structure in our relation database world. So, it is understandable that I do everything I can to gather information, monitor their health and maintain them to the best of my ability. One of the keys to index health is how badly fragmented the index is. Many people simply reindex everything on a regular schedule. While this may be fine for smaller indexes say under 50 megabytes but not so great for indexes that may be very large 400 megabytes or more. Knowing how your database is More >

SQLDIY: Statistics Information Including Last Update

One of the most important aspects of keeping your system running well is updating and managing your statistics. Since the optimizer relies on statistics to determine the best execution plan it is imperative that you keep an eye on them and maintain them just like you would indexes. One of the disappointing things in SQL Server 2005/2008 is the deprecation of some of the functionality of the sysindexes system view. In particular the rowmodctr column, since there is no equivalent in any of the new sys schema DMV’s. With that said, the GatherStatisticsInformation stored procedure listed here is More >

SQLDIY: Gathering A Data Dictionary

In this installment we are looking at assembling a basic data dictionary from the column level meta data stored in SQL Server. This is a little different from the rest. You can still do quite a bit with the information provided but to leverage this to the fullest requires a bit of developer buy in. Or a bit more work for whomever is your schema designer. Extended properties have been available to you since the stone ages of SQL Server. Two fine fellows Mark Chaffin and Brian Knight(blog|twitter) expound on the power of extended properties in the article on Managing Metadata in SQL Server More >

SQLDIY: Tracking Space Usage At the Index Level

I am a fan of information, the more the merrier. Anytime I’m tasked with tracking a production server over the long haul I try and gather as many data points as I can. You can capture database sizes but when your database blows up in size its nice to be able to drill down and find out if it was a new index or correlates with a change in code at a point in time. In this script I’m falling back on sp_spaceused to gather that information. I could query several DMV’s to get the same or more information. I could also put in DDL triggers for tracking things like schema changes if I need to the More >

SQLDIY: Database Space Detail

Continuing to build up our data gathering library we shift our focus to tracking database file growth. This particular procedure compiles both data and log file usage. This is a fundamental aspect of tracking growth over time and being proactive about growing your databases yourself instead of letting the auto grow making  a mess of your databases. There is no clean and easy way to do this without temp tables so I just have to suck it up and use them. I considered going with a CLR routine and gather more data but we are assuming that you, the user, don’t have the CLR or OLE automation More >

SQLDIY: Tracking Wait Stats

One of the most important methodologies to date for troubleshooting problems with the SQL Server engine is examining the wait statistics. As with most of the DMV’s provided in SQL Server 2005/2008 sys.dm_os_wait_stats is a cumulative view. To add to my series SQLDIY: Manage and Monitor SQL Server Yourself  here is my stored procedure for capturing deltas on an ongoing basis. It is modeled the same way I capture sys.dm_io_virtual_file_stats. This procedure captures the delta and the raw data at a point in time. This allows you to do your own roll ups to look at the numbers in different ways. More >

SQLDIY: Alert On Blocking Chains

Continuing the SQLDIY monitoring project we will take a look at tracking blocking events. I actually received a request to update this from a script I had made available at SQLServerCentral. This was a script from the grand old days of SQL Server 2000 and actually used xp_smtp_sendmail That Gert Drapers wrote about a million years ago in SQL Server time. With the advent of database mail it only made sense to update the procedure to use it. This still relies on sysprocesses but since it isn’t deprecated yet I’ve got at least three versions of SQL Server before I need to fix that. I did replace More >

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