SQL & PL/SQL

Hi guys,
I've issued any role that I could think of...

grant manage scheduler to info;
grant create job to info;
grant create any rule to info;
grant execute on dbms_scheduler to info;
grant execute on dbms_isched to info;
grant create evaluation context to info;

but still insufficient privileges...

Error starting at line 44 in command:
BEGIN
    DBMS_SCHEDULER.CREATE_CHAIN (
         chain_name  => 'info.stepped_chain_demo'
        ,rule_set_name  => NULL
        ,evaluation_interval => NULL
        ,comments  => 'executes a job chain'
    );
END;
Error report:
ORA-01031: insufficient privileges
ORA-06512: at "SYS.DBMS_ISCHED", line 4856
ORA-06512: at "SYS.DBMS_ISCHED", line 1094
ORA-06512: at "SYS.DBMS_SCHEDULER", line 1598
ORA-06512: at line 2
01031. 00000 -  "insufficient privileges"
*Cause:    An attempt was made to change the current username or password
           without the appropriate privilege. This error also occurs if
           attempting to install a database without the necessary operating
           system privileges.
           When Trusted Oracle is configure in DBMS MAC, this error may occur
           if the user was granted the necessary privilege at a higher label
           than the current login.
*Action:   Ask the database administrator to perform the operation or grant
           the required privileges.
           For Trusted Oracle users getting this error although granted the
           the appropriate privilege at a higher label, ask the database
           administrator to regrant the privilege at the appropriate label.

Any ideea, what else....