2893950 - ORA-01722 during an Upgrade to 19c

Upgrade to Oracle 19c is failing with below error visible in catupgrd0.log

...

13:54:15 SQL> SELECT TO_NUMBER(
13:54:15 2 'MUST_BE_&C_ORACLE_HIGH_MAJ..&C_ORACLE_HIGH_RU..&C_ORACLE_HIGH_RUR')
13:54:15 3 FROM v$instance
13:54:15 4 WHERE substr(version_full,1,instr(version,'.',1,3)-1) !=
13:54:15 5 '&C_ORACLE_HIGH_MAJ..&C_ORACLE_HIGH_RU..&C_ORACLE_HIGH_RUR';
old 2: 'MUST_BE_&C_ORACLE_HIGH_MAJ..&C_ORACLE_HIGH_RU..&C_ORACLE_HIGH_RUR')
new 2: 'MUST_BE_19.3.0')
old 5: '&C_ORACLE_HIGH_MAJ..&C_ORACLE_HIGH_RU..&C_ORACLE_HIGH_RUR'
new 5: '19.3.0'
'MUST_BE_19.3.0')
*
ERROR at line 2:
ORA-01722: invalid number

• Oracle RDBMS 19c

dbua, dbua.sap.ps1, 19c, 18c, 12c, 12.1, 12.2, upgrade, banner, version, catupgrd0.log , KBA , BC-DB-ORA , Oracle , Problem