Error
Error Code:
1805
SAP S/4HANA Error 1805: Invalid Shared Memory Attachment
Description
Error 1805, ERR_SHM_ATTACH_INVALID, indicates that an SAP S/4HANA process failed to attach to a required shared memory segment because the provided Shared Memory ID (shmid) was invalid. This typically occurs when a program attempts to access shared memory that doesn't exist, is inaccessible, or is referenced incorrectly, potentially impacting system performance or transaction execution.
Error Message
ERR_SHM_ATTACH_INVALID
Known Causes
3 known causesShared Memory Segment Not Found
The requested shared memory segment, identified by the shmid, could not be located by the system. This often indicates it was not created or was already removed.
Insufficient Access Permissions
The user or process attempting to attach to the shared memory segment lacks the necessary operating system permissions to access it.
Incorrect SHMID Reference
The SAP application or underlying system is attempting to attach using an incorrect or outdated Shared Memory ID (shmid), possibly due to a program error or configuration mismatch.
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