The following action can be done to workaround the situation, but please note that the following solution is not supported as dropping the outln schema is not a supported action in the first place:

1-startup mount:

startup mount

2-run:

alter system set replication_dependency_tracking =false scope=spfile;

3-Shutdown the database

shutdown immediate

4-Startup the database in the upgrade mode.

startup upgrade

5-Create the outln schema:
the creation information can be extracted from :
$OH/rdbms/admin/doptim.bsq

6-Run:

alter system set replication_dependency_tracking =true scope=spfile;

7-shutdown the database

shutdown immediate

8-startup the database

startup