title: Oracle XE 18c create database error "[DBT-50000] Unable to check for available memory" through DBCA
body: <p>I have just installed Oracle XE 18c on my Windows 8.1 machine.</p>
  
  <p>I am trying to create a new database through <strong>Advanced Configuration</strong> but when I get to <strong>Configuration settings</strong> step, it throws an error:</p>
  
  <blockquote>
    <p><strong><em>[DBT-50000] Unable to check for available memory</em></strong>.</p>
  </blockquote>
  
  <p>I have tried bypassing the validation checks as suggested <a href="https://stackoverflow.com/questions/55019218/getting-unable-to-check-for-available-memory-on-oracle-db-18c">here</a> but still no luck.</p>
  
  <p>I have also tried creating it through command prompt with:</p>
  
  <pre><code>dbca -createDatabase -silent -gdbName ora18c -templateName General_Purpose.dbc 
  -sysPassword sys123 -systemPassword sys123 -dbsnmpPassword sys123 -
  datafileDestination /u01/oradata -storageType FS -memoryPercentage 20 -
  emConfiguration NONE -sampleSchema false -J-Doracle.assistants.dbca.validate.ConfigurationParams=false
  </code></pre>
  
  <p>but it also throws in an error saying Oracle not available.</p>
  
  <p>I highly appreciate your help please.  </p>