IN_DB_UPGRADE package uses the IN_DB_UTIL.IN_LOGGER procedure to log certain actions to the INUSER.IN_DB_UTIL_LOG table. This table will contain a log of any exceptions that occur during the execution of the IN_DB_UTIL and IN_DB_UPGRADE packages. It also contains a log of calls to the IN_SESSION_SET, and IN_SESSION_CLEAR, and IN_SESSION_CLEAR_ALL stored procedures.
To view the contents of the IN_DB_UTIL_LOG table execute the query provided in the Troubleshooting section.
It is highly recommended that you also utilize the spool command for your session before executing any of the procedures so that you have full logging of the output displayed by the various procedures. Refer to Oracle documentation for utilizing the spool command.