How To Fix RSRCACHE031 - Main memory cache is limited to &1 MB of the shared memory buffer

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRCACHE - Messages for OLAP Cache

• Message number: 031

• Message text: Main memory cache is limited to &1 MB of the shared memory buffer

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 RSRCACHE031 - Main memory cache is limited to &1 MB of the shared memory buffer ?

  The SAP error message RSRCACHE031 indicates that the main memory cache for the shared memory buffer is limited to a specified size (denoted by &1 MB). This error typically arises when the system is trying to allocate more memory for caching than what is allowed by the current configuration.
  Cause:
  
  Memory Limitations: The error is primarily caused by the configuration settings in the SAP system that limit the size of the shared memory buffer. This can happen if the system is configured with a low value for the memory cache size.
  High Load: If the system is under heavy load or if there are many concurrent users, the demand for memory may exceed the configured limits.
  Configuration Changes: Changes in the system configuration or updates to the application that require more memory than what is currently allocated can also trigger this error.
  
  Solution:
  To resolve the RSRCACHE031 error, you can take the following steps:
  
  
  Increase Memory Allocation:
  
  Access the SAP system configuration (transaction code RZ10).
  Look for the parameter rsrcache or abap/rsrcache which controls the size of the main memory cache.
  Increase the value of this parameter to a higher limit that meets the needs of your application. For example, if it is currently set to 128 MB, you might increase it to 256 MB or more, depending on your system's capacity.
  
  
  
  Check System Resources:
  
  Ensure that your system has enough physical memory available. If the server is running low on memory, consider upgrading the hardware or optimizing other applications running on the server.
  
  
  
  Review Workload:
  
  Analyze the workload on the system. If there are specific transactions or processes that are consuming excessive memory, consider optimizing them or scheduling them during off-peak hours.
  
  
  
  Restart the System:
  
  After making changes to the memory parameters, you may need to restart the SAP system for the changes to take effect.
  
  
  
  Monitor Performance:
  
  After applying the changes, monitor the system performance to ensure that the issue is resolved and that there are no new memory-related errors.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and caching for specific recommendations and best practices.
  System Monitoring: Use transaction codes like ST02 (Buffer Monitor) and ST04 (Database Performance Monitor) to monitor memory usage and performance.
  Documentation: Refer to the SAP Basis Administration Guide for detailed information on memory management and configuration parameters.
  
  By following these steps, you should be able to resolve the RSRCACHE031 error and optimize the memory usage in your SAP system.