SQL tuning is a process that fixes performance and security problems that occur in deployed applications. Performance and security goals are established during application design, and the problem arises when a particular SQL statement does not meet these goals. For example, a query that takes three minutes to complete in a data warehouse may be consuming the database host’s CPU and blocking other queries. Performing SQL performance tuning requires an understanding of database performance and security.
Oracle provides the SQLTuned Advisor
Oracle provides the SQLTuned Advisor to improve the performance of Oracle databases. The advisor analyzes SQL statements to detect poor execution plans, resource-intensive SQL statements, and other problems. It also generates recommendations and develops finer-tuned plans. If you’re running a production database, sqltuned.com can help you optimize your workload.
The SQL Tuning Advisor analyzes high-load SQL statements to determine their performance and recommends a set of tuning options. The advisor then invokes the Automatic Tuning Optimizer to apply the recommended changes to the SQL statement. This prevents regressions from occurring and ensures that optimal plans are executed. The advisor also provides rationales and expected benefits of each recommended change.
The SQL Tuning Advisor can tune single or multiple SQL statements. However, it cannot recognize the interdependencies between SQL statements. As a result, it’s designed to be run for a large number of SQL statements. The advisor can be run manually or automatically using Oracle Enterprise Manager. Alternatively, it can be run automatically through ADDM, which automatically identifies SQL statements that are experiencing high-load conditions.
The SQL Tuning Advisor is available for both local and remote databases. It can be run manually or automatically by using the DBMS AUTO SQLTUNE database parameter. Automatic tuning can be set up to run during nightly system maintenance windows. Manual SQL tuning requires that the administrator logs into Oracle Enterprise Manager Cloud Control with the correct credentials.
Microsoft provides the Database Engine Tuning Advisor
The Database Engine Tuning Advisor is a useful tool to optimize data-driven applications. It provides recommendations that are based on your current workload. You can use the tool both online and offline to analyze your performance and make adjustments to improve it. The results can be exported for further use.
The database performance analyzer offers a user-friendly GUI that allows you to select tuning options and optimize your database. It can also be integrated into scripts and applications. It supports SQL Server 2016 and Transact-SQL. It also offers a historical data repository that you can use to identify performance issues.
SolarWinds provides the DPA for SQL Tuns
The DPA for SQL Tuns helps you find bottlenecks in SQL database instances and recommends solutions to optimize them. It analyzes wait times, events, and CPU usage to pinpoint where the bottlenecks are. DPA can be installed on Windows, Linux, and UNIX platforms. It supports Oracle, DB2, MySQL, and Cloud databases, including Amazon RDS, Amazon Aurora, and Azure SQL.
The DPA provides users with a graphical interface for monitoring database performance. It correlates events across objects and queries, and lets you view them side-by-side in real-time. You can also view reports that track the progress of your tuning efforts. The interface is easy to use and provides real-time data.
The DPA also allows you to compare performance across multiple databases and platforms. It also has a simplified deployment process, including pre-configured versions for Azure and Amazon Machine Image. The agentless architecture of the DPA makes it less intrusive than most other monitoring tools. It also enables you to identify the exact reasons why a query takes so long to run and identify optimization opportunities.
While database manufacturers have dominated database performance monitoring, software vendors have also emerged to provide an all-inclusive database monitoring solution. The DPA for SQL Tuns by SolarWinds is a comprehensive database monitoring solution that supports several database platforms and versions. It works on Windows Server and Linux and also on Google and Azure cloud environments.