A blog about real-life SQL Server Troubleshooting, providing solutions that actually work. By a SQL Server Enthusiast.
A severe error occurred on the current command
all the satellite assemblies required are loadable and fully signed
An error occurred while dropping availability group
An error occurred while obtaining or using the certificate for SSL
and it is not possible to create a self-signed certificate
Availability Group does not come up
Availability Group does not come up on one instance
Availability Group does not failover
Availability Group Not Synchronizing\Recovery Pending
awe in sql
because of error 9002
Caching in SQL
cannot be started because some of the database functionality is not available in the current edition of SQL Server
Cannot insert the value NULL into column 'servername'
Case sensitive collation
Check for previous errors
Error code 1642
Exit Code Returned: 11009
Failed mirror comes online after restart
failed to find installation media path due to datastore exception in FindSetupFolder()
Failed to launch local setup100.exe: 0x80070003
Failed to obtain the Windows Server Failover Clustering (WSFC) node handle (Error code 5042)
failed to run patch request for instance
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SQL Server 2008 R2
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SQL Server 2008 R2
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SQL server memory management
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An in-depth look at SQL Server Memory–Part 3
In part 1 and part 2 of the series, we talked about the memory architecture and the Procedure Cache respectively. In this third and final instalment of the SQL Server Memory series, I will look to focus on troubleshooting SQL Server Memory pressure issues. Before we start on the troubleshooting...
15 Mar 2013
An in-depth look at SQL Server Memory–Part 2
Before you read this, I would strongly recommend reading Part 1 first. The memory architecture evolved in a big way from SQL 2000 to 2005. Basically, in 2000, all we had was the procedure cache (used to cache compiled plans and execution plans, execution contexts, etc.) and the buffer pool. However,...
12 Feb 2013
An in-depth look at SQL Server Memory–Part 1
I know that memory management in SQL Server is one area that’s a bit of an enigma for a lot of people, and most of us only tend to know as much about memory as is related to our day-to-day activities. In this post(and others in this series), I shall seek to do a deep dive into SQL Server memory...
16 Dec 2012
SQL Server Cluster Failover Root Cause Analysis–the what, where and how
I know many of you get into situations where SQL Server fails over from one node of a cluster to the other, and you’re hard-pressed to find out why. In this post, I shall seek to answer quite a few questions about how to about conducting a post-mortem analysis for SQL Server cluster failover, aka Cluster...
3 Sep 2012
Migrating TFS from SQL Server Enterprise to Standard can cause problems due to compression
When migrating a Team Foundation Server from SQL Server Enterprise to Standard , you might run into this error: Restore Failed For Server ‘< Servername >’, (Microsoít.SqlServer.SmoExtended) Additional information: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft...
3 Sep 2012
When DBMail started complaining about the servername being NULL
I recently came across an issue, where, for some reason, DBMail was not working. To be more specific, we were unable to create a profile for DBMail, let alone send emails. When trying to add the profile to the account, we were getting this error: TITLE: Configuring... ----------------------------...
22 Aug 2012
An in-depth look at Ghost Records in SQL Server
Ghost records are something that are a bit of an enigma for most folks working with SQL Server, and not just because of the name. Today, I’ll seek to explain the concept, as well as identify some troubleshooting techniques. The main reason behind introducing the concept of Ghost records was...
27 Jul 2012
SQL Server Resource database corruption–yes, it’s possible
It’s very rare that I run into an issue with the Resource database, and the one I ran into recently was rarer still. But before I get into the nitty-gritty of the issue, let us begin by outlining a few details about the resource database: The Resource database The resource database is a hidden...
9 Apr 2012
SQL, Sharepoint and the Windows Internal Database – an interesting saga
This one is for all my friends out there who use Sharepoint. A default Sharepoint installation enables/installs the Windows Internal database, and creates its databases on it. The Windows Internal Database is, in a way, a special edition of SQL Server, in the sense that it’s not a Full version...
6 Apr 2012
SQL 2005 patch fails with 1642 “Unable to install Windows Installer MSP file”
This one is for all my DBA friends out there. I recently ran into this issue when running a security patch installation for a SQL 2005 instance on SP4. The setup failed, and when I looked into the “C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\Log\Hotfix” folder (this is where...
3 Apr 2012
Access Violation dumps and metadata corruption
This is an issue that I had been busy working on these past few days. We were getting AV dumps on the DB, and when I looked at the stack, I found that SQL was calling a function to get the name of a column(given a table name), an index id and key id. This function call resulted in a an exception being...
26 Mar 2012
VSS backups might cause SQL to generate Non-Yielding Scheduler dumps if Backup verification is turned on
Found an interesting Non-Yielding scheduler recently. Opened the dump, and found function calls related to backup verification (such as validating the file name, verifying that the drive is part of the cluster group, etc.) at the top of the stack: Child-SP RetAddr Call Site 00000000`29cda478 000007fe...
20 Mar 2012
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