ORA-00990

This was tested on Oracle 11. You can grant roles and system privileges in the same statement. But if you want to include object privileges, you need to use a new GRANT statement:

SQL> grant dba, alter system,

  2  execute on sys.dbms_lock

  3  to andrew

  4  /

grant dba, alter system,

      *

ERROR at line 1:

ORA-00990: missing or invalid privilege

SQL> grant dba, alter system

  2  to andrew

  3  /

Grant succeeded.

SQL> grant execute on sys.dbms_lock

  2  to andrew

  3  /

Grant succeeded.

SQL>