Answer / Shyam Ji Mishra

Tuning slow running queries in an Oracle database involves optimizing SQL statements to improve performance. Here's a general methodology:nn1. Identify Slow Queries: Use performance monitoring tools like Oracle Enterprise Manager (EM), AWR reports, or SQL Tuning Advisor to identify queries that are taking longer than expected.nn2. Analyze Query Execution Plan: Examine the execution plan of the slow query to find bottlenecks, such as full table scans or suboptimal join methods.nn3. Rewrite Queries: Modify the SQL statements to remove unnecessary operations and improve efficiency, for example, by using indexes, partitioning, or JOIN rewriting techniques.nn4. Use SQL Tuning Advisor: Oracle's SQL Tuning Advisor analyzes your queries and provides recommendations for improving their performance.nn5. Monitor and Evaluate: After implementing changes, monitor the system to ensure that query performance has improved and make further adjustments as necessary.

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