To upgrade from Oracle 11gR2 to Oracle 18c/19c, we need to remove OLAP. Remove OLAP Catalog by running the 11.2.0.4.0 SQL script $ORACLE_HOME/olap/admin/catnoamd.sql script. [oracle@localhost admin]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Mon Feb 26 01:48:34 2018 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition […]