The installation documentation for Oracle APEX 5.1 has the following code in it for enabling network access from the database in a pre-12c database:
DECLARE ACL_PATH VARCHAR2(4000); BEGIN -- Look for the ACL currently assigned to '*' and give apex_050100 -- the "connect" privilege if apex_050100 does not have the privilege yet. SELECT ACL INTO ACL_PATH FROM DBA_NETWORK_ACLS WHERE HOST = '*' AND LOWER_PORT IS NULL AND UPPER_PORT IS NULL; IF DBMS_NETWORK_ACL_ADMIN.CHECK_PRIVILEGE(ACL_PATH, 'apex_050100', 'connect') IS NULL THEN DBMS_NETWORK_ACL_ADMIN.ADD_PRIVILEGE(ACL_PATH, 'apex_050100', TRUE, 'connect'); END IF; EXCEPTION -- When no ACL has been assigned to '*'. WHEN NO_DATA_FOUND THEN DBMS_NETWORK_ACL_ADMIN.CREATE_ACL('power_users.xml', 'ACL that lets power users to connect to everywhere', 'apex_050100', TRUE, 'connect'); DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL('power_users.xml','*'); END; / COMMIT;
You’ll notice that the username in the above is ‘apex_050100’. If you run the above code you’ll get the following:
01435. 00000 - "user does not exist" *Cause: *Action:
Changing each instance of ‘apex_050100’ to ‘APEX_050100’ will address the error and you’ll be able to run the code.
Interestingly enough the new 12c APIs are apparently doing an UPPER on the passed in username because the following code works just fine:
BEGIN DBMS_NETWORK_ACL_ADMIN.APPEND_HOST_ACE( host => '*', ace => xs$ace_type(privilege_list => xs$name_list('connect'), principal_name => 'apex_050100', principal_type => xs_acl.ptype_db)); END; /
I’ve logged a bug request with Oracle Support (of course).