How To Fix VIRT151 - Memory Available

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 151

• Message text: Memory Available

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 VIRT151 - Memory Available ?

  The SAP error message VIRT151 typically indicates that the system has run out of virtual memory. This can occur in environments where the SAP application is running, particularly when the system is under heavy load or when there are memory-intensive operations being performed.
  Cause:
  
  Insufficient Virtual Memory: The system may not have enough virtual memory allocated to handle the current workload.
  Memory Leaks: Applications or processes may be consuming more memory than expected, leading to exhaustion of available memory.
  Configuration Issues: The SAP system may not be configured optimally for the available hardware resources.
  High Workload: A sudden increase in user activity or background jobs can lead to high memory consumption.
  Operating System Limits: The operating system may have limits on the amount of virtual memory that can be allocated.
  
  Solution:
  
  
  Increase Virtual Memory:
  
  Adjust the virtual memory settings on the operating system to allocate more memory.
  For Windows, this can be done through the System Properties > Advanced > Performance Settings > Advanced > Virtual Memory.
  For Unix/Linux, you may need to adjust swap space or other memory settings.
  
  
  
  Optimize SAP Configuration:
  
  Review and optimize the SAP memory parameters (e.g., abap/heap_area_dia, abap/heap_area_nondia, etc.) in the instance profile.
  Ensure that the parameters are set according to the available physical memory and the expected workload.
  
  
  
  Monitor and Analyze Memory Usage:
  
  Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks or memory leaks.
  Check for long-running processes or background jobs that may be consuming excessive memory.
  
  
  
  Restart the SAP System:
  
  If the issue persists and is due to a temporary spike in memory usage, a restart of the SAP application server may help to clear memory.
  
  
  
  Upgrade Hardware:
  
  If the system frequently runs out of memory, consider upgrading the hardware to provide more RAM or better performance.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to memory management or the VIRT151 error.
  
  
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in configuring the system properly. SAP uses different memory areas for dialog processes, background processes, and other operations.
  Operating System Monitoring Tools: Use tools provided by the operating system to monitor memory usage and identify potential issues.
  SAP Basis Administration: Involves regular monitoring and tuning of the SAP system to ensure optimal performance and resource utilization.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support or a qualified SAP Basis consultant for further assistance.