How To Fix DO634 - * Synchronous execution, no parallel processing *

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 634

• Message text: * Synchronous execution, no parallel processing *

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 DO634 - * Synchronous execution, no parallel processing * ?

  The SAP error message DO634, which states "Synchronous execution, no parallel processing," typically occurs in the context of background jobs or processes that are expected to run in parallel but are instead being executed synchronously. This can lead to performance issues, especially if the job is resource-intensive or if there are multiple jobs queued for execution.
  Cause:
  
  Job Configuration: The job may be configured to run synchronously due to specific settings in the job definition.
  System Settings: The SAP system may have limitations on parallel processing due to configuration settings or resource constraints.
  Dependencies: There may be dependencies between jobs that require them to run in a specific order, preventing parallel execution.
  Resource Constraints: The system may not have enough resources (CPU, memory) to allow for parallel processing.
  Locks: There may be locks on certain resources that prevent parallel execution.
  
  Solution:
  
  Check Job Configuration: Review the job configuration in transaction SM37 (Job Monitoring) or SM36 (Define Background Job) to ensure that it is set up for parallel processing if applicable.
  Adjust System Settings: If the system settings are limiting parallel processing, consider adjusting the parameters in transaction RZ10 or RZ11. Look for parameters related to background processing and parallel execution.
  Review Dependencies: Check if there are any dependencies between jobs that require them to run in a specific order. If possible, modify the job dependencies to allow for parallel execution.
  Resource Allocation: Ensure that the system has adequate resources available for parallel processing. This may involve checking system performance and resource utilization.
  Check for Locks: Use transaction SM12 to check for any locks that may be preventing parallel execution. If locks are found, investigate and resolve them.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error or provide guidance on configuration settings.
  
  Related Information:
  
  Transaction Codes: 
  
  SM37: Job Monitoring
  SM36: Define Background Job
  SM12: Display and Delete Locks
  RZ10/RZ11: Profile parameters
  
  
  SAP Documentation: Refer to the official SAP documentation for background processing and job scheduling for more detailed information on configuration and best practices.
  Performance Monitoring: Use transaction ST03N to monitor system performance and identify any bottlenecks that may be affecting parallel processing capabilities.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.