How To Fix RSDD_ZA123 - Check for slave servers in indexes

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 123

• Message text: Check for slave servers in indexes

What causes this issue?

Some of the indexes have no slave server assigned.

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?

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 RSDD_ZA123 - Check for slave servers in indexes ?

  The SAP error message RSDD_ZA123, which indicates a problem with "Check for slave servers in indexes," typically arises in the context of SAP BW (Business Warehouse) or SAP HANA environments. This error is related to the data warehousing layer and can occur during data loading or when accessing InfoProviders.
  Cause:
  The error usually indicates that there is an issue with the distribution of data across the servers in a BW system landscape, particularly when using a distributed setup with multiple application servers. The specific causes can include:
  
  Slave Server Issues: The system is unable to find or communicate with the slave servers that are supposed to handle the data processing.
  Indexing Problems: There may be issues with the indexes that are used to access the data, which can lead to inconsistencies or failures in data retrieval.
  Configuration Errors: Incorrect configuration settings in the BW system or in the database can lead to this error.
  Network Issues: Problems with the network connectivity between the master and slave servers can also trigger this error.
  
  Solution:
  To resolve the RSDD_ZA123 error, you can follow these steps:
  
  
  Check Slave Server Status:
  
  Verify that all slave servers are up and running. You can do this by checking the system logs or using transaction codes like SM51 (to check the status of application servers).
  
  
  
  Rebuild Indexes:
  
  If the issue is related to indexes, consider rebuilding the indexes for the affected InfoProviders. You can do this using transaction RSD1 (Data Warehousing Workbench) and selecting the relevant InfoProvider.
  
  
  
  Check Configuration:
  
  Review the configuration settings for the BW system, especially those related to the distribution of data and server assignments. Ensure that all settings are correctly configured.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues affecting communication between the master and slave servers. You can use tools like ping or traceroute to check connectivity.
  
  
  
  System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error. There may be patches or updates available that can resolve the issue.
  
  
  
  Consult SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and the details of the error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSD1 (Data Warehousing Workbench), SM51 (List of Application Servers), and SM21 (System Log).
  SAP BW Documentation: Review the official SAP BW documentation for best practices on managing and troubleshooting data loading and server configurations.
  Performance Monitoring: Regularly monitor the performance of your BW system to identify potential issues before they lead to errors.
  
  By following these steps, you should be able to diagnose and resolve the RSDD_ZA123 error effectively.