As many of you have probably noticed, I haven’t blogged in quite a while due to work commitments, health issues and various family commitments (don’t want to go on too long here with excuses J), but I decided a perfect first blog post back might be taking the stored procedure that a friend and his consulting group have so graciously shared with the community. I am, of course, speaking of Brent Ozar’s sp_BLITZ stored procedure intended to help a DBA see what they are inheriting when someone dumps a new server on them. I kind of took a different twist on this and figured that this might be a great tool to use on all of the SQL Servers in an environment periodically by creating a report around it.
I work as the lead DBA in an environment with over 160 SQL Server instances (a number that seems to grow by at least five or so every quarter) and somewhere in excess of 2,000 databases ranging in size from what some of you might consider laughably small to some rather large data warehouse databases, many of which are mission critical to our business. To manage this environment, I have a team of two other DBA’s that I lead. One started with the company the week after I started and the other, a junior DBA, has been with us just over a year. We have a great team, but even with three DBA’s, it is hard to be proactive without some tools to let you know what is going on. Unfortunately, we don’t have the budget for some of the major monitoring tools as the cost for our environment would be rather substantial. Needless to say, it is left to me and my team to be creative and create our tools and instrumentation. That is where Brent’s sp_BLITZ script comes in. With a report written around it that my junior DBA can go through on a weekly or monthly basis, we can be much more proactive with some of the more basic or fundamental settings that someone who shouldn’t have access to change, but always inevitably does, changes without our knowledge.
So, the report itself is pretty simple. Unfortunately, it does require that you have a server that has linked servers to all of your servers (we have a centralized DBA server that we use for this) and the sp_BLITZ script that can be downloaded from here has to be installed on each of these servers. This is a perfect use for the SQL Server 2008 Central Management Server feature that we have set up on our DBA monitoring server. What I have done in the report is created two datasets, one that queries a table that we maintain with an inventory of all of our SQL Servers which will feed the “Server Name” report parameter and the second which actually runs the sp_BLITZ stored procedure on the server that has been chosen from the dropdown. Brent has a great video on exactly what his script does at http://www.brentozar.com/blitz/. This report just gives you a format that you can go out and run off of your Reporting Services site or even schedule to run automatically in a Reporting Services subscription and have it automatically emailed to you or posted out in a document library on a SharePoint site if you are running Reporting Services in SharePoint integrated mode. This report does require that your Reporting Services service is at least 2008 R2 in order to work. One of the nice things about this report is that the URLs that Brent provides in the output for this stored procedure are active links in this report, so if you click in that URL cell, you will be taken to the page on Brent’s site that explains the Finding. Below are some screenshots of the report in collapsed and expanded form (all private information has been blacked out to protect the innocent or at least those who sign my paycheck J):
Figure 1 Collapsed Version of Report
Figure 2 Expanded View of Report
Setting Up The Report
So, to use the report that is freely downloadable at the end of this blog post, all you need to do is go into the Data Source for the report and change it to the name of your monitoring SQL Server or at least a server that has linked servers to all of the servers that you want to manage with this report, like so, replacing the text <Type Your Monitoring Server Here> with the name of your monitoring server.:
The next step is to make sure that you have a table on your monitoring server that has an inventory list of all of the servers from your environment and replace the <ServerName.database.schema.tablename> text in the query in the Servers Dataset with the pertinent information for your environment. See below:
From here, it is just a matter of deploying the report to your Reporting Services server and making sure that Brent’s stored procedure has been created on all of the servers that you wish to monitor.
The report can be downloaded here (you will need to go to Brent’s site mentioned earlier in this blog post to get the latest version of his sp_BLITZ script). I hope that you find this to be one of the many helpful tools in your tool chest to keep your environment in check.
As DBAs, we are increasingly being asked to manage more and more technology. Some of that is the result of internal pressures (i.e. taking on additional roles) and some of that is the result of Microsoft bundling an ever increasing array of different technologies within SQL Server. Dealing with these various technologies has become a weekly issue for me, but it really came to light today when I had a SQL Server Reporting Services 2008 server that was consuming 100% of the CPU. Doing some poking around, I realized not only did I not really know anything about this beast called “SQL Server Reporting Services”, the tools to manage it are extremely lacking (now, that is my opinion coming from a position of complete ignorance about this technology). I connected to the SSRS 2008 service with SSMS and, from there, I could only view three things: SSRS jobs, security, and shared schedules. I determined that none of the shared schedules were responsible for the utilization since nothing was scheduled to run anywhere near the time that the problem started, so that was a dead end.
Next, I connected to the Report Service by hitting http://[servername]/reports. From here, I could look at all of the various reports that had been deployed to the instance, general site settings, security, both instance-wide and at a report level, and I could look at my own subscriptions. The one thing that seemed to elude me was visibility into what, if anything, users were running on the SSRS server.
Frustrated, I connected to database instance through SSMS that hosts the ReportServer database. I figured there had to be something in the database I could query to give me some visibility into what my SSRS instance does all day. Thinking like a DBA, the first thing I did was look under “System Views” in the ReportServer database. I saw two views, ExecutionLog and ExecutionLog2, so I decided to do a simple SELECT TOP 100* from each to see what they would give me. This is where I stumbled upon my gold nugget for the day. Right there in the ExecutionLog2 system view was all of the information that I had been looking for. Running the following query, you can get a wealth of valuable information on what reports users are running, when they are running them, what parameters they used, and how long the report took to generate (broken down into data retrieval time, processing time, and rendering time) – all key information for trending the load that your server is under and <gasp> justifying new hardware, if needed.
WHERE CONVERT(VARCHAR(10),timeend,101) >= -- Some start date that you supply
AND CONVERT(VARCHAR(10),timeend,101) <= -- Some end date that you supply
To many of you who regularly use SSRS this may be very remedial, but I figured I would throw this out there for those DBAs who like me, have to learn this stuff on the fly in a crisis.
By the way, as a side note, for those who are curious about why the ExecutionLog2 system view was used instead of the ExecutionLog system view, it appears that the ExecutionLog system view exists for backward compatibility for SQL Server 2005 Reporting Services upgrades. The ExecutionLog2 system view provides much more information than the ExecutionLog system view.
A couple of weeks ago, I tweeted a question out to the community about whether there was any way to run PowerShell scripts from within a SQL Server Reporting Services 2008 DataSet query. The answers that I received back were discouraging. Even though Microsoft is touting PowerShell as the best thing since sliced bread (I have to admit, it is pretty darned cool!) and integrating into all of its current products, the integration with SQL Server 2008 seems to have stopped at giving you a mini PowerShell console (SQLPS) and a SQL Server provider to give you easier access to running SQL Server commands from within PowerShell. This integration hasn’t gone beyond the database engine, so if you want to run PowerShell scripts from within Reporting Services, you have to get creative. That posed a big problem for me because the report I was writing depended on some PowerShell scripts that I had written.
After walking away from the problem for an hour or two, it finally hit me. Since a Reporting Services 2008 DataSet query runs T-SQL code, including stored procedures, why don’t I just write a stored procedure that I can use to run a PowerShell script. Below, is the stored procedure that I wrote. It is really pretty simple. It takes as a parameter, the command line command that you would normally type in at a PowerShell command line to run your script. This information would include the script path\name and any parameters that the PowerShell script requires.
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N’[Utility].[RunPowerShellScript]‘) AND type in (N’P', N’PC’))
DROP PROCEDURE [Utility].[RunPowerShellScript]
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
CREATE PROCEDURE [Utility].[RunPowerShellScript]
set nocount on;
declare @cmd varchar(2000);
set @cmd = ’sqlps -c ‘ + ‘”‘ + @Script + ‘”‘
exec master..xp_cmdshell @cmd, no_output;
In the above code, “[MyDatabase]” of course refers to the database that you would want this stored procedure to be stored in. So, walking through the code, all this script really does is create a stored procedure called Utility.RunPowerShellScript that runs the xp_cmdshell extended stored procedure with a command string that calls the SQL Server PowerShell mini console (SQLPS) in command line mode and passes to that command line whatever you passed into the stored procedure as a parameter. For my own purposes, I have created a schema called “Utility” so that I can easily identify stored procedures, such as this one, as helper stored procedures. Feel free to omit this if you like. So an example of how you could use this stored procedure after you have created it would be as follows. Say you wanted to run a PowerShell script called “Get-DriveSpace” that returns total size and free space information for the drives on a server that you pass in and resides in the D:\Scripts folder. All you would need to do is type:
exec DBA_Console.Utility.RunPowerShellScript‘”D:\Scripts\Get-DiskSpace.ps1 -Server MyServer”‘
Where “MyServer” is the name of the server that you are passing into the PowerShell script as a parameter.
That’s it. Short and simple and now I have a mechanism to call all of the PowerShell scripts that I want from within a Reporting Service DataSet query.