Fixing Slow Queries in Oracle
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Fixing Slow Queries in Oracle: A Step-by-Step Approach Slow SQL queries are one of the most common and most critical problems faced by Oracle DBAs. A single poorly performing query can impact application response time, user experience, and even system stability. Oracle performance tuning is not guesswork . It’s a methodical process of identifying bottlenecks, validating execution paths, and applying targeted fixes. In this blog, we’ll walk through a step-by-step approach to fixing slow queries in Oracle , using proven DBA techniques. Step 1: Confirm the Problem (Is the Query Really Slow?) Before tuning, always validate the issue . Ask these questions: Is the query slow now , or was it slow earlier? Is it slow for all users or only specific sessions? Is the slowness consistent or intermittent ? Useful Checks SELECT status, state, seconds_in_wait FROM v$session WHERE username = 'APP_USER' ; Check: Active vs waiting sessions ...