SAP S/4HANA kernel upgrade
Pre-Upgrade Preparation
- Log into SAP system.
- Use transaction code SLICENSE.
- Check the installed kernel version.
- Refer to SAP's Product Availability Matrix.
- Ensure compatibility with your current S/4HANA version.
- Visit the SAP Support Portal.
- Search for kernel upgrade notes.
- Read notes for version-specific details.
- Identify any critical notes or prerequisites.
- Document important information for reference.
- Schedule downtime for the system.
- Use SAP tools for system backup.
- Backup the database using supported methods.
- Verify the integrity of the backup.
- Store backups in a secure location.
- Review custom ABAP code and enhancements.
- Use transaction code SE80 for analysis.
- Identify deprecated functions and methods.
- Test custom code in a sandbox environment.
- Document findings and required changes.
- Prepare a communication plan.
- Identify all relevant stakeholders.
- Send out upgrade schedule and impact details.
- Schedule meetings to discuss changes.
- Provide regular updates leading to upgrade.
Upgrade Process
- Log in to SAP Service Marketplace.
- Navigate to the relevant product section.
- Locate the latest kernel version.
- Download the kernel files to a local machine.
- Verify the integrity of the downloaded files.
- Access the SAP system management console.
- Identify all running services and applications.
- Execute the command to stop each service gracefully.
- Confirm all services are stopped.
- Ensure no active user sessions remain.
- Navigate to the directory where files are downloaded.
- Use an extraction tool compatible with the file format.
- Extract files to the designated kernel directory.
- Ensure proper permissions are set on the extracted files.
- Check for any extraction errors.
- Launch the Software Update Manager.
- Select the option for kernel upgrade.
- Follow the prompts to specify the kernel directory.
- Initiate the upgrade process.
- Monitor the progress for completion.
- Review logs generated during the upgrade.
- Check for any error messages or warnings.
- Address any issues encountered immediately.
- Confirm successful completion of the upgrade.
- Document the upgrade results for future reference.
Post-Upgrade Tasks
- Access the SAP management console.
- Stop all SAP services gracefully.
- Start SAP services in the correct order.
- Monitor logs for any errors during the restart.
- Log into the SAP system.
- Check system parameters and configurations.
- Review system logs for any warnings or errors.
- Ensure all instances are running as expected.
- Execute transaction code SLICENSE.
- Check the kernel version displayed.
- Compare with the expected version post-upgrade.
- Note any discrepancies for further investigation.
- Identify key business processes to test.
- Run each process through typical scenarios.
- Log any errors or unexpected behaviors.
- Ensure all outputs are as expected.
- Compile all steps taken during the upgrade.
- Record any issues and their resolutions.
- Include screenshots or logs as necessary.
- Share documentation with relevant stakeholders.
Use in Manifestly