How to enable ddl logging in Oracle Container database 19c ?

Solution:

At CDB:

SQL> ALTER SYSTEM SET enable_ddl_logging=TRUE SCOPE=BOTH;

-- ALTER SYSTEM SET enable_ddl_logging=FALSE SCOPE=BOTH; -- Turn off

Any PDB:

create table tbl_a (num number);

alter table tbl_a add num2 number;

Check ddl logging with new log file:

$DUMP_LOCATION/log/ddl_dbname.log  and

$DUMP_LOCATION/log/ddl/log.xml

ddl_dbname.log or log.xml:

2021-01-28T13:46:41.640037-05:00

diag_adl:create table tbl_a (num number)

2021-01-28T13:50:20.725803-05:00

diag_adl:alter table tbl_a add num2 number