ORA-24247: 网络访问被访问控制列表 (ACL) 拒绝

BEGIN
DBMS_NETWORK_ACL_ADMIN.APPEND_HOST_ACE
(
host => '192.168.32.53',
lower_port => null,
upper_port => null,
ace => xs$ace_type(privilege_list => xs$name_list('jdwp'),
principal_name => 'USER',
principal_type => xs_acl.ptype_db)
);
END;
/