How To Fix RZ792 - Preferred instance selected for logon group &1: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RZ - Messages for Computing Center Management System

• Message number: 792

• Message text: Preferred instance selected for logon group &1: &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RZ792 - Preferred instance selected for logon group &1: &2 ?

  The SAP error message RZ792 indicates that a preferred instance has been selected for a logon group, but there may be issues related to the instance's availability or configuration. This message typically arises in the context of SAP's load balancing and instance management.
  Cause:
  
  Instance Availability: The preferred instance for the specified logon group may not be available or may be down.
  Configuration Issues: There could be misconfigurations in the SAP system regarding the logon groups or instances.
  Network Issues: Network problems may prevent the connection to the preferred instance.
  Resource Constraints: The preferred instance may be overloaded or experiencing resource constraints, leading to it being unable to accept new logon requests.
  
  Solution:
  
  Check Instance Status: Verify that the preferred instance is up and running. You can do this by checking the SAP Management Console (SAP MC) or using transaction code SM51 to see the status of all instances.
  Review Logon Group Configuration: Use transaction code SMLG to check the configuration of the logon groups. Ensure that the preferred instance is correctly assigned and configured.
  Check System Logs: Look into the system logs (transaction SM21) for any errors or warnings that might indicate why the preferred instance is not available.
  Network Connectivity: Ensure that there are no network issues preventing access to the preferred instance. You can use tools like ping or traceroute to check connectivity.
  Resource Monitoring: Monitor the performance of the preferred instance using transaction ST03N or ST06 to check for any resource bottlenecks (CPU, memory, etc.).
  Fallback Mechanism: If the preferred instance is not available, ensure that the logon group has fallback instances configured to handle logon requests.
  
  Related Information:
  
  Logon Groups: Logon groups in SAP are used to manage user logons to different application servers. They help in load balancing and ensuring that users are directed to the appropriate server based on availability and performance.
  SAP Notes: Check SAP Notes related to logon groups and instance management for any known issues or patches that may address specific problems.
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring and managing logon groups and instances.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.