Cause
Resolution
Upgrading kernel of Diagnostic Agent is generally not recommended. In any doubt on any issue being related or not to diagnostic agent kernel version, please raise a support message
Approach 1:-
Diagnostics Agent - How to upgrade SAP Kernel
You are in one of the following cases:
Download the latest SAPEXE archive from the SAP Service Marketplace under:
Software Downloads -> Support Packages and Patches -> A-Z Index -> K -> SAP KERNEL * UNICODE, and rename it from SAPEXE_<XXX>.SAR to SAPEXE.SAR.
If you upgrade from a Diagnostics Agent that was installed using a Diagnostics Agent Standalone Installer, you should expect up to 3 GB additional disk space consumption during and after the upgrade.
2. Preparations
1. Stop all the Diagnostics Agents available on your host.
2. Stop sapstartsrv
On UNIX: kill -2 <PID of sapstartsrv>
3. Remove any IPC objects that still exist (Unix only)
Cleanipc <instance no> remove
Copy the kernel into a temporary directory <newkernel>.
1. Log on as user<dasid>adm and switch to the directory /usr/sap/<DASID>/SYS/exe/uc/<platform>
2. Save the sdiagag.lst file if it exists (from the <platform> directory)
3. Recommend saving the old kernel before deploying the new kernel.
4. Delete all of the files from the <platform> directory, including the subdirectories. This ensures that there are no remaining files from the earlier release.
5. Create a new <platform> directory and navigate to this directory to restore the sdiagag.lst file saved in step 2 (if it exists).
6. Unpack the new kernel in the <platform> directory:
SAPCAR -xvf <new kernel>/SAPEXE.SAR
7. Switch to the Diagnostics Agent instance exe directory /usr/sap/<DASID>/SMDA<XX>/exe and save the sapjvm* files and directories.
8. Delete all content from Diagnostics Agent instance exe directory.
9. Restore the sapjvm* files and directories you saved in step 7.
10. Since executables from the local instance executable directories may already be executed during the start, before sapcpe runs, perform an initial copy of the executables:
cd /usr/sap/<DASID>/SMDA<XX>/work
sapcpe pf=/usr/sap/<DASID>/SYS/profile/<DASID> _SMDA<XX>_<hostname>
Approach 2:-
Diagnostics Agent - How to perform Agent Replacement
To replace a Diagnostics Agent, install a new Diagnostics Agent, and uninstall the previous Diagnostics Agent. This procedure can be relevant in the following scenarios:
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