Enable DDL auditing in 11GR2 Database:

Found intresting audit parameter in 11Gr2, enable_ddl_logging will allow the tracking of all ddl's in the alert log using the following:

Enable it by using the below command.

ALTER SYSTEM SET enable_ddl_logging=TRUE

All the DDL commands executed against the database will be recorded in the alert<SID>.log

More details of the DDL of the command executed can be found in the XML file in the alert directory