ORACLE default user can delete

First look at the default users:

There are two types of ORACLE accounts:

1. Required account, SYS / SYSTEM / SYSMAN, etc.

 2. Account for storing various applications:

1) The sys password is CHANGE_ON_INSTALL;

2) The system password is manager;

3) The password of dbsnmp is dbsnmp

 

 

Now the local users who are not in use are locked.

In fact, except for the database administrator user, all other users should be able to delete, but after deletion, it may affect some characteristics of the system, so it is not recommended to delete.