Boosting Oracle Database Performance with V$FIXED_TABLE + Example!
💡 Before: Imagine you’re troubleshooting a slow-running Oracle database. Users are facing delays, but the source of the issue isn’t clear. You know Oracle has dynamic performance views (those V$ views!), but you’re unsure where to start to get a full picture of what’s going on.
🚀 After: Now, imagine you have an organized, systematic approach to performance tuning. You know exactly where to find insights on session waits, bottlenecks, SQL performance, and memory utilization. Issues that once took hours to diagnose are now resolved in minutes.
🌉 Bridge: This is where V$FIXED_TABLE becomes a game-changer. By listing all V$ views, it gives developers and DBAs a complete map to Oracle’s internal diagnostics. With V$FIXED_TABLE, you can navigate Oracle’s performance views, focusing on metrics that matter most.
📊 Example:
Step 1: Use V$FIXED_TABLE to identify key views for performance tuning.
SELECT VIEW_NAME FROM V$FIXED_TABLE WHERE VIEW_NAME LIKE 'V$%';
This query lists all available V$ views, helping you locate specific performance data.
Step 2: Now that you know the views, let’s dive deeper. Use V$SESSION_WAIT to see if sessions are waiting on resources.
SELECT SID, EVENT, WAIT_TIME, SECONDS_IN_WAIT
FROM V$SESSION_WAIT
WHERE WAIT_TIME > 0;
With this view, you can quickly see which sessions are waiting and on what events, helping you identify bottlenecks.
Step 3: Use V$SQLAREA to find high-impact SQL statements.
SELECT SQL_TEXT, EXECUTIONS, DISK_READS, BUFFER_GETS
FROM V$SQLAREA
WHERE EXECUTIONS > 1000
ORDER BY DISK_READS DESC;
This view allows you to prioritize SQL tuning by showing which queries are consuming the most resources.
🔍 Using V$FIXED_TABLE to find relevant views enables a powerful, data-driven approach to performance tuning. Mastering these insights will transform your database optimization efforts, ensuring a smoother, more efficient user experience!
Thank You
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