How To Fix SMMSS_ALERTS046 - This alert shows if disk performance statistics are on for the DB server

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_ALERTS - Message class for MSSQL rz20 messages

• Message number: 046

• Message text: This alert shows if disk performance statistics are on for the DB server

What causes this issue?

This alert shows if it will be possible to get to disk performance data
from the WIndows performance monitor tool for the database server. If
it is not possible, and i/o is a concern, then diskperf will need to be
run from the command line and the server rebooted. Please see windows
documentation on diskperf.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Data is informational only. There is nothing to do.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_ALERTS046 - This alert shows if disk performance statistics are on for the DB server ?

  The SAP error message SMMSS_ALERTS046 indicates that there are issues related to disk performance statistics on the database server. This alert is part of the SAP Solution Manager's monitoring capabilities, which help in identifying performance bottlenecks and ensuring that the system runs optimally.
  Cause:
  The alert SMMSS_ALERTS046 is triggered when the disk performance statistics are not being collected or are showing suboptimal performance. This can be caused by several factors, including:
  
  Disk I/O Bottlenecks: High disk usage or slow disk response times can lead to performance issues.
  Configuration Issues: The database server may not be configured correctly to collect or report disk performance statistics.
  Resource Contention: Other processes on the server may be competing for disk resources, leading to degraded performance.
  Hardware Limitations: The physical disks may not be capable of handling the workload, especially if they are older or not designed for high performance.
  Database Configuration: The database itself may not be optimized for the workload, leading to inefficient disk usage.
  
  Solution:
  To resolve the SMMSS_ALERTS046 alert, you can take the following steps:
  
  Check Disk Performance: Use monitoring tools to analyze disk I/O performance. Look for high latency, low throughput, or high queue lengths.
  Review Configuration: Ensure that the database server is configured to collect and report disk performance statistics. This may involve checking database settings or SAP Solution Manager configurations.
  Optimize Database: Review and optimize database queries and indexes to reduce unnecessary disk I/O.
  Upgrade Hardware: If the disks are found to be a bottleneck, consider upgrading to faster disks (e.g., SSDs) or adding more disks to distribute the load.
  Monitor Resource Usage: Use system monitoring tools to check for other processes that may be consuming disk resources and causing contention.
  Consult Documentation: Refer to SAP notes and documentation for specific recommendations related to your version of SAP and the database being used.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to disk performance monitoring.
  SAP Community: Engage with the SAP Community forums to see if other users have experienced similar issues and what solutions they have implemented.
  Performance Tuning Guides: Review SAP performance tuning guides specific to your database (e.g., Oracle, HANA, SQL Server) for best practices on optimizing disk performance.
  
  By following these steps, you should be able to address the underlying issues causing the SMMSS_ALERTS046 alert and improve the overall performance of your SAP system.