DBCC FREEPROCCACHE is a DBCC command in Microsoft SQL Server that can be used to clear the procedure cache, which is a region of memory that stores the execution plans for stored procedures, triggers, and ad hoc Transact-SQL batches. Clearing the procedure cache can be useful for troubleshooting performance issues or testing the effects of changes to the database schema …
Hey there, SQL developers and DBA’s I’ve always been captivated by Common Table Expressions (CTEs) in SQL Server. There’s something about streamlining complex queries and making them more readable that I find incredibly satisfying. Over the past 9 years, I’ve explored deep into CTEs—presenting at conferences, writing a book, and even hosting a few online sessions. And now, I’m thrilled …
Have you seen the Stedman SQL School – The Everything SQL Server Bundle. Curated with both budding enthusiasts and seasoned professionals in mind, this comprehensive package is set to revolutionize your SQL Server learning journey. What’s Inside the Bundle? Whether you’re preparing for a crucial interview, fortifying your system against potential pitfalls, or honing your technical acumen, this bundle has …
The integrity of a Microsoft SQL Server database can be severely undermined by corruption, leading to data inaccessibility and potential operational disasters. Steve Stedman’s comprehensive approach to identifying and rectifying such corruption is often considered an essential tool in the SQL Server administrator’s kit, underlining its significance in maintaining database health. These stories come from a recording of a presentation …
SQL Server Corruption: Stories About Causes of Corruption Read more »
Database Integrity in SQL Server: What It Is and Why It Matters Maintaining database integrity is one of the most critical aspects of managing any SQL Server environment. Simply put, database integrity ensures that the data stored in your SQL Server remains accurate, consistent, and reliable. However, when database integrity is compromised, it can lead to corruption, which can cause …
Database Integrity in SQL Server: What It Is and Why It Matters Read more »
Understanding fn_dump_dblog in SQL Server In SQL Server, the transaction log plays a vital role in ensuring database integrity and providing the ability to restore data in the event of a failure. To dive deep into the contents of the transaction log, SQL Server provides a function called fn_dump_dblog, which is an undocumented function but can be incredibly useful in …
Wait statistics, in the context of SQL Server, refer to the amount of time that a query spends waiting to access data in the database. When a client application requests data from the database, the request is placed in a queue and the client application must wait for its turn to access the data. The time that the query spends …
SQL Server Wait Type: SOS_SYNC_TASK_ENQUEUE_EVENT Read more »
The Scan For Startup Procs feature in SQL Server allows you to specify a list of stored procedures that will be automatically executed whenever the database engine starts. This can be useful in certain scenarios, such as when you want to perform tasks such as restoring a database or performing maintenance tasks when the database engine starts. “Scan for startup …
SQL Servers DBCC commands are a set of T-SQL commands that are used for various maintenance and diagnostic tasks. Some of these commands are documented and can be accessed through the SQL Server documentation, while others are considered “undocumented” and are not officially supported by Microsoft. Undocumented DBCC commands are usually not documented in the official SQL Server documentation and …
SQL Server DBCC Commands: Overview of Undocumented Commands Read more »
What is the Difference Between Log Shipping and Replication in SQL Server? When it comes to SQL Server, ensuring data availability, Disaster Recovery, and data distribution are critical tasks for any database administrator. Two of the most commonly used features to achieve these goals are Log Shipping and Replication. Although they may seem similar at first glance, they serve different …
Difference Between Log Shipping and Replication in SQL Server? Read more »