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Chapter 1. Supported upgrade paths
Currently, it is possible to perform an in-place upgrade from RHEL 8 to the following target RHEL 9 minor versions:
| System configuration | Source OS version | Target OS version |
| SAP HANA | RHEL 8.8 | RHEL 9.2 |
| RHEL 8.10 | RHEL 9.4 | |
| SAP NetWeaver and other SAP Applications | RHEL 8.8 | RHEL 9.2 |
| RHEL 8.10 | RHEL 9.4 |
SAP HANA is validated by SAP for RHEL minor versions that receive package updates for more than 6 months. SAP NetWeaver is validated by SAP for each major RHEL version. The supported in-place upgrade path for both are the same as described in the Upgrading from RHEL 8 to RHEL 9 document.
The upgrade of systems hosting SAP HANA and other SAP applications are very similar. Certain deviations are described in Section 4. Upgrading an SAP NetWeaver system. For systems on which both SAP HANA and SAP NetWeaver are installed, the SAP HANA restrictions apply.
Please refer to the Planning an upgrade to RHEL 9 chapter for more details.
For cloud providers (AWS, Azure, and GCP), PAYG VMs on RHUI, and for both options, RHEL for SAP HA and US and RHEL for SAP Applications, there is a known bug in upgrading from 8.10 to 9.4 due to a RHUI client rpm name difference in 8.10 compared to previous releases. The upgrade is not possible at the moment, and there is no workaround. The upgrade from 8.8 to 9.2 is not impacted.
