How To Fix SBLM033 - Not enough shared memory on &1 servers

SAP Error Message - Details

• Message type: E = Error

• Message class: SBLM - Blacklist Monitor: Message Classes

• Message number: 033

• Message text: Not enough shared memory on &1 servers

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 SBLM033 - Not enough shared memory on &1 servers ?

  The SAP error message SBLM033 indicates that there is not enough shared memory available on the specified number of servers. This error typically occurs in environments where SAP applications are running, and it can be related to various configurations and resource allocations.
  Cause:
  
  Insufficient Shared Memory Allocation: The shared memory settings in the SAP system may not be configured to meet the demands of the applications running on the servers.
  High Load: A sudden increase in load or number of users can lead to higher memory consumption, resulting in insufficient shared memory.
  Configuration Issues: Incorrect configuration of the SAP instance parameters related to memory management can lead to this error.
  Operating System Limits: The operating system may have limits on the amount of shared memory that can be allocated, which can affect SAP's ability to use shared memory effectively.
  
  Solution:
  
  
  Increase Shared Memory Allocation:
  
  Adjust the shared memory settings in the SAP profile parameters. You can modify parameters such as shmmax, shmall, and shmmni in the operating system to allow for more shared memory.
  For example, on Linux, you can modify /etc/sysctl.conf to increase these values and then run sysctl -p to apply the changes.
  
  
  
  Review SAP Profile Parameters:
  
  Check the SAP instance profile parameters related to memory, such as abap/heap_area_total, abap/heap_area_dia, and abap/heap_area_nondia. Adjust these parameters based on the requirements of your application.
  
  
  
  Monitor Memory Usage:
  
  Use monitoring tools to analyze memory usage patterns and identify peak usage times. This can help in planning for future memory requirements.
  
  
  
  Restart SAP Instances:
  
  In some cases, restarting the SAP instances may help to clear up memory issues temporarily, but this is not a long-term solution.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to memory management.
  
  
  
  Operating System Configuration:
  
  Ensure that the operating system is configured correctly to support the required shared memory. This may involve adjusting kernel parameters or system settings.
  
  
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in configuring the system appropriately. SAP uses different types of memory (heap memory, shared memory, etc.) for various purposes.
  Documentation: Refer to the official SAP documentation for detailed information on memory management and configuration settings.
  Performance Tuning: Regular performance tuning and monitoring can help prevent memory-related issues in the future.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or a professional with expertise in SAP system administration.