How To Fix SY486 - Not all of the ranking list can be created; not enough memory

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 486

• Message text: Not all of the ranking list can be created; not enough memory

What causes this issue?

The ranked list can only be partially created because there is not
enough memory.

System Response

When generating the ranked list, the system could not fulfill a request
for memory. There are two possible reasons for this:
The error occurred when the object graph was being processed. If so, the
application creates only a list for bound memory use. All other values
are set to 0, which indicates that this information is not available.
The error occurred when the figures for memory were being calculated. If
so, only the values processed beofre the error occurred are displayed.

How to fix this error?

Call the ranked list at an earlier point in time, in debugging mode.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SY486 - Not all of the ranking list can be created; not enough memory ?

  The SAP error message SY486, which states "Not all of the ranking list can be created; not enough memory," typically occurs when the system is unable to allocate sufficient memory to create a ranking list for a query or report. This can happen in various scenarios, such as when dealing with large datasets or complex queries that require significant memory resources.
  Causes:
  
  Insufficient Memory Allocation: The SAP system may not have enough memory allocated to handle the request, especially if the dataset is large.
  System Configuration: The configuration settings for memory management in the SAP system may not be optimized.
  High Load on the System: If the system is under heavy load or if multiple users are running memory-intensive processes simultaneously, it can lead to memory shortages.
  Database Size: Large tables or complex joins in the database can require more memory than is available.
  ABAP Program Limitations: The ABAP program or report being executed may have limitations in how it handles memory.
  
  Solutions:
  
  
  Increase Memory Allocation:
  
  Check and increase the memory settings in the SAP system configuration. This can be done by adjusting parameters like abap/heap_area_dia and abap/heap_area_nondia in the instance profile.
  Consult with your Basis team to ensure that the instance has adequate memory resources.
  
  
  
  Optimize Queries:
  
  Review and optimize the query or report that is causing the error. This may involve simplifying the query, reducing the number of records processed, or breaking it into smaller parts.
  Use selection criteria to limit the dataset being processed.
  
  
  
  Check System Load:
  
  Monitor the system load and performance. If the system is under heavy load, consider scheduling resource-intensive jobs during off-peak hours.
  
  
  
  Database Optimization:
  
  Ensure that the database is optimized. This may include indexing tables, updating statistics, or archiving old data to reduce the size of active tables.
  
  
  
  Use Paging or Batching:
  
  If applicable, implement paging or batching in the report or query to process data in smaller chunks rather than all at once.
  
  
  
  Review ABAP Code:
  
  If you have access to the ABAP code, review it for any inefficiencies or memory-intensive operations that can be optimized.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations and best practices.
  Transaction Codes: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and performance.
  System Monitoring: Regularly monitor system performance and memory usage using tools like SAP Solution Manager or transaction codes like SM50 (Process Overview) and SM66 (Global Process Overview).
  
  If the problem persists after trying these solutions, it may be necessary to engage SAP support for further assistance.