Top 25 CellCLI Commands Every Oracle Exadata DBA Should Know

 Top 25 CellCLI Commands Every Oracle Exadata DBA Should Know

Introduction

CellCLI (Cell Command Line Interface) is one of the most important tools for Oracle Exadata administrators. It is used to manage and monitor Exadata Storage Servers (Cells), disks, flash cache, grid disks, alerts, and performance metrics.

This guide covers 25 commonly used CellCLI commands that every Exadata DBA should know for day-to-day administration and troubleshooting.

1. Connect to CellCLI

cellcli

Launches the CellCLI interface.

2. Check Cell Status

list cell

Displays cell configuration and status information.

3. Check Cell Details

list cell detail

Provides detailed information about the storage cell.

4. View Physical Disks

list physicaldisk

Displays all physical disks in the cell.

5. View Physical Disk Details

list physicaldisk detail

Shows detailed information including disk health and firmware.

6. Check Grid Disks

list griddisk

Displays all ASM grid disks.

7. Check Grid Disk Details

list griddisk detail

Shows size, status, ASM disk group assignments, and more.

8. Check Cell Disks

list celldisk

Displays all cell disks available on the storage server.

9. Check Cell Disk Details

list celldisk detail

Provides detailed cell disk information.

10. Check Flash Cache

list flashcache

Displays flash cache status and utilization.

11. Check Flash Cache Details

list flashcache detail

Shows flash cache size, mode, and usage statistics.

12. Check Flash Log

list flashlog

Displays flash log configuration.

13. View Alerts

list alerthistory

Shows historical cell alerts.

14. View Active Alerts

list alert

Displays current active alerts.

15. Check Services

list service

Shows running services on the storage cell.

16. Check Metrics

list metriccurrent

Displays current performance metrics.

17. View Metric History

list metrichistory

Shows historical performance metrics.

18. Check I/O Statistics

list metriccurrent where objectType='CELL'

Displays storage-level performance information.

19. Check ASM Deployed Grid Disks

list griddisk attributes name,asmdeactivationoutcome

Useful before maintenance activities.

20. Check Cell Software Version

list cell attributes releaseVersion

Displays the Exadata storage software version.

21. Verify Flash Cache Mode

list flashcache attributes mode

Shows WriteBack or WriteThrough mode.

22. Check Cell Disk Health

list celldisk attributes name,status

Quick health verification.

23. Check Physical Disk Errors

list physicaldisk attributes name,status,errCmdTimeoutCount

Useful for identifying failing disks.

24. Check Resilver Status

list physicaldisk attributes name,resilverStatus

Displays disk resilvering progress.

25. Export Cell Configuration

list cell detail

list celldisk detail

list griddisk detail

Useful for health checks and documentation.

Common Health Check Commands

list cell detail

list physicaldisk detail

list celldisk detail

list griddisk detail

list flashcache detail

list alert

list alerthistory

These commands should be part of every Exadata DBA’s routine health check.

Conclusion

CellCLI is the primary administration tool for Oracle Exadata Storage Servers. Understanding these commands enables DBAs to monitor storage health, troubleshoot issues, validate configurations, and maintain optimal Exadata performance.

Mastering these 25 commands will significantly improve your efficiency in managing Exadata environments.