The Impact of Cloud on DBA

The Impact of Cloud on DBA

The DBA is the information technology professional responsible for ensuring the ongoing operational functionality and efficiency of an organization’s databases and the applications that access those databases. Traditionally, the job has entailed becoming an...

Using Custom Styles in RAD Studio 10.3

Using Custom Styles in RAD Studio 10.3

It’s very easy to customize your user interface using FireMonkey styles in RAD Studio 10.3. We’ve added all of the premium styles to GetIt (Tools > GetIt Package Manager > Styles) in 10.3. This includes both VCL Windows and FMX multi-device themes.   Ready...

How to Find and Fix SQL Server Deadlocks

How to Find and Fix SQL Server Deadlocks

Introduction Locking is required for concurrent operations of relational databases to prevent data inconsistency and loss. However, locking impairs the performance of databases. Moreover, the locking process is often complicated. Deadlocks occur when concurrent...

Monitoring Master-Slave Replication in MySQL 8

MySQL 8 introduced a number of enhancements to improve both replication performance and the monitoring thereof. Improvements included more efficient replication of small updates on big JSON documents, the addition of Performance Schema tables for slave performance...

Setting up Basic Master-Slave Replication in MySQL 8

Setting up Basic Master-Slave Replication in MySQL 8

Since April 19th, when MySQL 8.0 became Generally Available (GA), the MySQL community has been abuzz with excitement over all of the new features and improvements. Many of new features were improvements to performance or monitoring, while others were specifically...

SHA Hash with C++Builder and Delphi

SHA Hash with C++Builder and Delphi

I've always been fascinated by encryption & compression, but my favorite is probably the cryptographic hash function. A hash function is a one-way algorithm that takes an input of any size and always produces the same size output. It is one-way in that there...

Improve MariaDB Performance using Query Profiling

Query profiling is a useful technique for analyzing the overall performance of a database. Considering that a single mid-to-large sized application can execute numerous queries each and every second, query profiling is an important part of database tuning, both as a...

Error Logging in MySQL 8

Although only available as a Release Candidate, MySQL 8 is already proving itself to be a huge leap forward in many regards. Error logging is no exception. The MySQL development team just announced that they have redesigned the error logging subsystem to use a new...

Virtual Machine Snapshots versus Database Backups

Virtual Machine Snapshots versus Database Backups

Virtual Machine Snapshots Virtual machines provide exciting possibilities concerning backup, recovery, and cloning of databases. Convenient mechanisms are available for obtaining consistent snapshots of data volumes in virtual machines. Correctly implemented and...

How to monitor Always On availability groups

How to monitor Always On availability groups

Always On availability groups are part of an integrated solution with the goal of achieving the highest level of data availability and disaster recovery for organizations. Availability groups grant database administrators the ability to automatically or manually...

How to monitor and diagnose SQL query performance

How to monitor and diagnose SQL query performance

Executing resource-intensive SQL queries requires a significant amount of processor time, memory, and bandwidth, and storage. Resource-intensive SQL queries prevent other SQL queries from using these resources. This can eventually lead to blocking. Common causes of...

Alert Configuration Templates in SQL Diagnostic Manager

Alert Configuration Templates in SQL Diagnostic Manager

Several versions ago, SQL Diagnostic Manager (SQLDM) introduced Alert Configuration Templates, which basically allowed users to preconfigure alert settings (metrics which are to be alerted upon and the thresholds set for those metrics). This was a great addition to...