The Plan Cache Internals and Management

by Antonios Chatzipavlis

Κάθε φορά που στέλνουμε ένα Transact SQL statement να εκτελεστεί σε ένα SQL Server instance είναι γνωστό ότι ένα από τα βασικά components του SQL Server Database Engine αναλαμβάνει την διαδικασία αυτή και αυτό δεν είναι άλλο από τον Query Optimizer. Αυτός αναλαμβάνει να μετατρέψει το δεδομένο T-SQL statement σε μια σειρά από logical operators οι οποίοι θα χρησιμοποιηθούν για την εκπλήρωση της εκτέλεσης του T-SQL statement. Αυτή η σειρά των logical operators είναι γνωστή σαν Query Execution Plan.


Statistics and Index Internals

Στην παρουσίαση αυτή εξηγούμε την σημασία των στατιστικών και πως αυτά επιρεάζουν το performance των queries καθώς επίσης και το πως πρέπει να φτιάξω τους κατάλληλους indexes

Replication Enhancement – Improved Distribution Database Cleanup

Replication Distribution database is the perhaps the most important entity in the entire replication topology. Apart from storing the replication metadata and history for replication agents, the distribution database, in case of transactional replication, also provides intermediate storage for the transactions and commands that will be shipped to the subscribers. These transactions and commands stored in the MSRepl_Transactions and MSRepl_Commands tables. In a transactional replication topology which involves a highly active Publisher (and Publication database), i.e. a publisher with high numbers of transactions/second, the MSRepl_Commands and MSRepl_Transactions tables on the distribution database can grow substantially large.

How Azure SQL Database makes database management easier?

Azure SQL database is a platform as a service SQL Server Database Engine hosted in Azure cloud and managed by Azure. Azure automates many management activities and enables you to focus on development and optimizations. In addition, it enables you to easily configure some advanced management configurations.

Azure SQL Database – the database engine that cannot die

Azure SQL Database is highly available database Platform as a Service that guarantees that your database will be up and running 99.99% of time, without worrying about maintenance and downtimes. This is a fully managed SQL Server Database Engine process hosted in Azure cloud that ensures that your SQL Server database is always upgraded/patched without affecting workload. Azure SQL Database could quickly recover even in the most critical circumstances ensuring that your data is always available.

The April release of SQL Operations Studio is now available

SQL Operations Studio is a data management tool that enables you to work with SQL Server, Azure SQL DB and SQL DW from Windows, macOS and Linux.

Modernize to cloud with Azure SQL Database

ompanies are embracing digital transformation by migrating to the cloud. IT organizations are continuously looking for new ways of optimizing how they use the data that fuels their operations. Modernizing to the cloud offers the right mix of operational efficiencies and business enablement to drive continued growth.

SQL Server 2016 Service Pack 2 (SP2) released !!!

The SQL Server team is excited to bring you the second service pack release for SQL Server 2016! The SQL Server 2016 Service Pack 2 (SP2) contains a rollup of released hotfixes as well as multiple improvements centered around performance, scalability, and supportability based on feedback from customers and the SQL community. These improvements enable SQL Server 2016 to perform faster and with expanded supportability and diagnostics. It also showcases the SQL Server product team’s commitment to provide continued value into in-market releases.