I installed Oracle 11g XE on CentOS 7 and everything went fine.
I wanted to upgrade APEX to the latest version and followed instructions in Upgrading Oracle Application Express within Oracle Database 11g Express Edition (XE). Did everything that said and get following error:
ORA-24344: success with compilation error ... in create_upgrade_triggers for ... create or replace trigger wwv_flow_upgrade_trg133 before insert or update or delete on WWV_PURGE_WORKSPACE_RESPONSES begin