Before you read further, let me warn you that Logon triggers are potentially evil and might also end up locking everyone out of the instance. Be careful! Don’t just copy paste the code and create the trigger, you might end up in downtime to fix the issue.
Recently, one of my blog readers sent an email to me asking a quick suggestion. He informed me that he is using a LOGON trigger to control the access to the server. Here is the code for the trigger.
Even after working with many clients on various issues (Always On, Deployment, Performance Tuning) I always get new challenges as a part of my freelancing job. One thing I have learned is that one needs a systematic approach to diagnose the issue and, of course, passion to solve the problem. In this blog, we would learn about how to fix the error: 1067 which comes while trying to bring Analysis Service online in the cluster.
One of my clients consulted me for the best and easy method for migrating the Cluster Storage from old to newly attached disks. They wanted to move/reconfigure disks mapped to SQL Server, MSDTC, Quorum.
At present, they were using SQL Server 2014 as a mission-critical database server in a cluster environment. Storage being used was IBM DS 8300. They want to migrate the database from current storage i.e. IBM DS 8300 to new storage IBM DS 8870.
SQL SERVER – FIX: Error: 5511 – FILESTREAM’s file system log record under log folder is corrupted. Let us fix the error in this blog.
Many times, there are unforeseen conditions and few developers can’t predict which writing the code of a product. This is the reason we have bugs in the products and we all have job to do. One of my clients was not able to run one of the inbuilt reports which come with SQL Server Management Studio. The report name was Object Execution Statistics. As per them, this report was running fine until last week and it had suddenly stopped working. They wanted some idea this as it was not a show stopper for them. When they launch the report, they see below error
Most of the time applying service pack for SQL Server is a child’s play. Double click on exe, keep hitting next, next and finally press update. But when it fails, you would need an expert to fix the issue. Recently, one of my clients faced a problem while installing SQL Server 2014 Sp2. The Service Pack error failed at the final stage. And now the SQL Server services were not starting. This issue can have various variations where SQL Services doesn’t start after patching. Few on my earlier blogs on the same topic are listed below. Let us learn about ALTER DATABASE Statement Not Allowed Within Multi-statement Transaction.
Recently I wrote a blog explaining a situation where taking log backup can break automatic seeding and synchronization would not work. Below is the blog reference. SQL SERVER – AlwaysOn Automatic Seeding – Database Stuck in Restoring State