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This is a little Quickyblog


Download SAP host agent from: -> Browse Download Catalog -> SAP Technology Compoents -> SAP HOST AGENT


Copy it sar file to /tmp/SAPHOSTAGENT.SAR
root> cp <location of downloaded sar file>/SAPHOSTAGENTxxx_xxx-xxxxxxxx.SAR /tmp/SAPHOSTAGENT.SAR


Create the location for the new binaries.
root> cd /usr/sap/hostctrl/

root> mkdir -p new

root> chown root:sapsys new

root> cd new

root> rm -rf *


Avoids that upgrade is started while extraction the binaries from sar file.
root> touch .upgrading


Extract SAPHOSTAGENT to /usr/sap/hostctrl/new/.
root> /usr/sap/SID/SYS/exe/run/SAPCAR -xvf /tmp/SAPHOSTAGENT.SAR -manifest SIGNATURE.SMF


Let the upgrade beginn...
root> rm .upgrading


By default saphostexec performs this check every 5 minutes. So, after 5 minutes do...
root> /usr/sap/hostctrl/exe/saphostexe -version




All in one:

root> cd /usr/sap/hostctrl/; mkdir -p new; chown root:sapsys new; cd new; rm -rf *; touch .upgrading; /usr/sap/SID/SYS/exe/run/SAPCAR -xvf /tmp/SAPHOSTAGENT.SAR -manifest SIGNATURE.SMF; rm .upgrading

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