How can I improve my Oracle performance?
3.1. 1 Steps in The Oracle Performance Improvement Method
- Get candid feedback from users.
- Get a full set of operating system, database, and application statistics from the system when the performance is both good and bad.
- Sanity-check the operating systems of all systems involved with user performance.
What are tools used for performance tuning in Oracle?
Performance Tuning Features and Tools in Oracle
- Automatic Workload Repository (AWR)
- Automatic Database Diagnostic Monitor (ADDM)
- Server-generated alerts.
- Advisors.
- Enterprise Manager Database Express.
- Enterprise Manager Cloud Control.
- V$ performance views.
- Alert log.
How do you approach a performance tuning?
This approach to performance tuning entails:
- Understand/document what needs to be tested.
- Define desired targets in terms of throughput or other system metrics.
- Create load test scripts.
- Produce load against system.
- Observe behavior of end-to-end system (ie, response time).
How do I perform a performance tuning in SQL Server?
Without further ado, here are seven ways to find slow SQL queries in SQL Server.
- Generate an Actual Execution Plan.
- Monitor Resource Usage.
- Use the Database Engine Tuning Advisor.
- Find Slow Queries With SQL DMVs.
- Query Reporting via APM Solutions.
- SQL Server Extended Events.
- SQL Azure Query Performance Insights.
How can we do performance tuning in SQL?
Supercharge Your SQL Queries for Production Databases
- Define business requirements first.
- SELECT fields instead of using SELECT *
- Avoid SELECT DISTINCT.
- Create joins with INNER JOIN (not WHERE)
- Use WHERE instead of HAVING to define filters.
- Use wildcards at the end of a phrase only.
- Use LIMIT to sample query results.
