How to perform an Oracle 18c Container and Pluggable Database upgrade using dbupgrade

Shutdown the 12c Release 2 CDB and PDBs   [oracle@host02 bin]$ sqlplus sys as sysdba Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 – 64bit Production SQL> show pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ———- —————————— ———- ———- 2 PDB$SEED READ ONLY NO 3 PDB1 READ WRITE NO 4 PDB2 READ WRITE NO SQL> […]