Is it possible to upgrade Oracle DB 11g to 19c directly
Oracle 11g
Direct upgrade from 11g to 19c is supported as per Oracle and Symantec documentation, however the Oracle 11g version should be 11.2.0.4 for a direct upgrade.
Please Refer:
Symantec_DLP_15.8_Oracle19c_Implementation_Guide.pdf (broadcom.com)