title: INS-20802 Oracle Net Configuration Assistant failed. during Oracle 19c installation
body: <p>im new to programming and sql and I'm trying to install oracle 19c but at 71% i get 
  <code>[INS-20802] Oracle Net Configuration Assistant failed.</code>
  in the details </p>
  
  <pre><code>[FATAL] Error during the execution of "C:\App\db_home\rdbms\admin\dbmssml.sql". 
  Refering to "C:\App\IvanoOracleDB\cfgtoollogs\dbca\orcl\dbmssml0.log"  for further details. 
  Error at the process: C:\App\db_home\perl\bin\perl.exe for futher details,
  see the log file "C:\App\IvanoOracleDB\cfgtoollogs\dbca\orcl\orcl0.log".
  </code></pre>