Monitoring the entire Oracle database involves collecting information on various aspects of the database, including performance metrics, resource usage, health checks, and more.
Here's a basic outline of the monitoring tasks:
1. Database Health Checks:
- Check database availability.
- Check tablespace status and space usage.
- Check database uptime and last startup time.
- Check for any critical database errors.
2. Performance Monitoring:
- Monitor CPU usage.
- Monitor memory usage.
- Monitor disk I/O performance.
- Monitor long-running queries.
3. Session Monitoring:
- Monitor active sessions and their activities.
- Monitor locks and wait events.
4. Backup and Recovery Monitoring:
- Check the status of the last database backup.
- Monitor the redo log switch frequency.
5. Resource Usage:
- Monitor the size and growth of database objects (tables, indexes, etc.).
- Monitor the size and growth of specific schemas.
