# Monitoring

> Monitor database performance with built-in metrics, logs, and query statistics.

Monitoring
----------

Managed databases come with built-in monitoring tools to help you understand performance and diagnose issues.

### Overview Tab

The **Overview** tab shows a summary of your database:

- Current status and operational state
- Node health (for multi-node setups, each node's role and state)
- Engine version
- Plan details (CPU, RAM, storage)
- Maintenance window information

### Metrics

The **Overview** tab displays real-time metrics for your database:

- **CPU usage** - How much processing power your database is using
- **Memory usage** - RAM utilization
- **Disk usage** - Storage consumption
- **Disk I/O** - Read and write operations per second
- **Network traffic** - Incoming and outgoing data
- **Database connections** - Number of active connections

Use these metrics to identify performance bottlenecks and decide when to upgrade your plan.

### Query Statistics

The **Query statistics** tab shows your most resource-intensive queries. This helps you identify slow queries and optimize your application's database access patterns.

For each query, you can see:

- Query digest (anonymized query pattern)
- Call count
- Total execution time
- Average execution time
- Rows examined vs rows sent

### Logs

The **Logs** tab shows recent database engine logs. These are useful for debugging connection issues, query errors, and replication problems.

### Session Management

The **Overview** tab also shows active database sessions. You can:

- View all currently active connections
- See which queries are running
- Terminate specific sessions if needed (e.g., killing a long-running query)

### When to Upgrade

Consider upgrading your plan when:

- **CPU usage** is consistently above 80%
- **Memory usage** is at or near the limit
- **Disk usage** is approaching storage capacity
- **Query performance** is degrading under load
- **Connection count** is near the plan's limit

### Next Steps

- [Properties](/documentation/managed-databases/properties) - Configure database engine settings
- [Scaling](/documentation/managed-databases/scaling) - Upgrade your database plan