Error
Error Code:
1798
SAP S/4HANA Error 1798: Shared Memory Allocation Failed
Description
Error 1798, ERR_SHM_CREATE_NO_MORE_MEMORY, indicates that SAP S/4HANA could not allocate the necessary shared memory segment overhead. This typically occurs when the operating system or system resources prevent the SAP instance from reserving memory crucial for inter-process communication and data sharing.
Error Message
ERR_SHM_CREATE_NO_MORE_MEMORY: No memory could be allocated for segment overhead
Known Causes
4 known causesInsufficient Physical Memory
The server running SAP S/4HANA may not have enough free RAM to satisfy the shared memory request, often due to high overall system load.
Operating System Shared Memory Limits
The operating system's configured limits for shared memory segments (e.g., shmmax, shmall on Linux) might be too low for SAP S/4HANA's requirements.
Competing Processes
Other applications or processes running on the same server might be consuming a significant amount of shared memory or system resources, leaving insufficient memory for SAP.
Incorrect SAP Memory Parameters
SAP S/4HANA instance profile parameters related to shared memory allocation might be incorrectly configured or set too high for the available system resources.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service