You will be able to see from oracle support some guides about all related with relinking ORACLE_HOME.
Relinking Oracle Home FAQ ( Frequently Asked Questions) (Doc ID 1467060.1)
Executing "relink all" resets permission of extjob, jssu, oradism, externaljob.ora (Doc ID 1555453.1)
Basic Procedure to clone Oracle Home to another server is:
1) Shutdown all services using the source Oracle Home.
2) logon as "root' and Zip the entire Oracle Home.
3) copy to target server, logon as root and unzip
4) Logon as Oracle Home owner and re-link all
5) edit $ORACLE_HOME/oraInst.loc to point to the OraInventory on that server (copy from /etc/oraInst.loc or /var/opt/oracle/oraInst.loc)
6) cd $ORACLE_HOME/oui/bin and execute "./attachHome.sh"
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