How To Fix PU606 - Double-stack system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 606

• Message text: Double-stack system &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PU606 - Double-stack system &1 ?

  The SAP error message PU606 "Double-stack system &1" typically occurs in a dual-stack SAP system, which means that both the ABAP and Java stacks are running on the same instance. This error can arise in various contexts, such as during system upgrades, installations, or when trying to perform certain operations that are not supported in a double-stack environment.
  Cause:
  
  Double-Stack Configuration: The system is configured as a double-stack (both ABAP and Java) and the operation being attempted is not compatible with this configuration.
  Upgrade or Migration Issues: The error may occur during an upgrade or migration process where certain components or functionalities are not supported in a double-stack environment.
  Incorrect Configuration: There may be a misconfiguration in the system settings that leads to this error.
  
  Solution:
  
  Check Compatibility: Ensure that the operation you are trying to perform is compatible with a double-stack system. Some operations may require a single-stack configuration.
  Review Documentation: Consult the SAP documentation for the specific operation you are attempting to perform to see if there are any known issues or requirements for double-stack systems.
  Consider Migration: If feasible, consider migrating to a single-stack system (either ABAP or Java) if your business requirements allow for it. This can simplify system management and reduce the likelihood of encountering such errors.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address this error. There may be specific patches or updates that can resolve the issue.
  System Configuration: Review the system configuration settings to ensure that they are correctly set up for a double-stack environment. This includes checking the instance profile and other relevant parameters.
  
  Related Information:
  
  SAP Notes: Look for SAP Notes related to PU606 for specific guidance and patches.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  System Logs: Check the system logs (transaction SM21) for additional error messages or warnings that may provide more context about the issue.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ST22 (dump analysis), SM37 (job monitoring), and SMD (System Management Diagnostics) for troubleshooting.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.