Oracle : Ошибка ORA-28300

"No permission to read user entry in LDAP directory service."
*Cause: ORACLE server does not have read permission on user entries.
*Action: Make sure ORACLE server is using right credentials to connect
to LDAP directory services.
Make sure permissions for LDAP user entries are configured correctly.

Попробовать перевести

Поискать эту ошибку на форуме