Can't create driver instance
  Error creating driver 'Oracle' instance.
Most likely required jar files are missing.
You should configure jars in driver settings.

Reason: can't load driver class 'oracle.jdbc.OracleDriver'
  Error creating driver 'Oracle' instance.
Most likely required jar files are missing.
You should configure jars in driver settings.

Reason: can't load driver class 'oracle.jdbc.OracleDriver'
    oracle.jdbc.OracleDriver
    oracle.jdbc.OracleDriver