We have just successfully upgraded the R12.2.9 rdbms from 12.1.0.2 to to 19.3.0.0 with no issues. Bu
We got the warning
Validating configuration on node: [hqoap-rd1].
Log: /s01/appltst6/TST6R12/fs_ne/EBSapps/log/adop/30/20190930_092403/prepare/validate/hqoap-rd1
[WARNING]: There could be issues while validating the ports used for E-Business Suite instance against ports used in /etc/services. Refer the log file for more details.
which makes no sense as nothing had changed on this server with regards to the processes using the ports!
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validateETCServicesPorts ...
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Started execution : ADOPValidations.java
Validating if ports of patch file system are listed in /etc/services
WARNING: This E-Business Suite instance is going to use the following ports listed in /etc/services.