How To Fix UGMD_TOOLS391 - Overflow of shared memory

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD_TOOLS - Messages for Package UGMD_TOOLS

• Message number: 391

• Message text: Overflow of shared memory

What causes this issue?

Shared memory has overflowed.

System Response

The system has temporarily deactivated the usage of the shared memory on
application server '&V1&'. This will worsen performance.

How to fix this error?

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

Procedure for System Administrators

Increase the memory space that is reserved for the shared memory. You do
this by calling up transaction <DS:TRAN.RZ11>Profile Parameter
Maintenance</> and changing the following parameters:
<AB>rsdb/esm/buffersize_kb</>
<AB>rsdb/esm/max_objects</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UGMD_TOOLS391 - Overflow of shared memory ?

  The SAP error message "UGMD_TOOLS391 Overflow of shared memory" typically indicates that the shared memory allocated for a specific process or operation has exceeded its limit. This can occur in various scenarios, such as when processing large datasets or when multiple processes are trying to access shared memory simultaneously.
  Causes:
  
  Insufficient Shared Memory Allocation: The shared memory settings in the SAP system may not be configured to handle the workload, leading to overflow.
  High Concurrency: Multiple users or processes trying to access shared memory at the same time can lead to contention and overflow.
  Large Data Processing: Operations that involve large amounts of data, such as bulk data uploads or complex calculations, can consume more memory than allocated.
  
  Configuration Issues: Incorrect configuration of the SAP instance parameters related to memory management.
  
  Solutions:
  
  
  Increase Shared Memory Allocation:
  
  You can increase the shared memory allocation in the SAP system profile parameters. Look for parameters like shmmax, shmmin, and shmall in