SYS.DBMS_SYS_SQL and table or view does not exist

Question

I have a stored procedure that has dynamic SQL with a CURSOR and I am now getting the following error:
ERROR at line 1:
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_SYS_SQL", line 909
ORA-06512: at "SYS.DBMS_SQL", line 39
ORA-06512: at "SOMEUSER.USP_RENAME_LOCATION", line 38
ORA-06512: at line 1
Here is the code in the stored proc where the error is occuring (line 39 is the PARSE):
dynamic_cursor := DBMS_SQL.OPEN_CURSOR;
dynamic_cursor2 := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(dynamic_cursor,
   'UPDATE SOMEUSER.' || table_var || ' SET ' ||column_var || ' = ''CBE''' || ' WHERE ' ||column_var || ' = ''MI''',DBMS_SQL.NATIVE);Can anyone shed any light on why I might be getting the error?
I am running the proc as the SOMEUSER user who is the owner of all the tables. Should the SOMEUSER user have any special permissions to the SYS objects?
I have seen threads discussing explicit grants in conjunction to ROLE permission. The SOMEUSER user has all roles including DBA.
Very confused???
Thanks in advance,
Miller

Answer 1

I resolved the issue...
It was not related to SYS objects at all....
The query being constructed began using some non existent tables in the result set so they would not work.
I added EXCEPTION block to the execution and all is well.
BEGIN
    var_update_string := 'UPDATE SOMEUSER.' || table_var || ' SET ' ||column_var || ' = ''CBE''' || ' WHERE ' ||column_var || ' = ''MI''';
    DBMS_SQL.PARSE(dynamic_cursor, var_update_string, DBMS_SQL.NATIVE);       
    var_status := DBMS_SQL.EXECUTE(dynamic_cursor);
    EXCEPTION
        WHEN OTHERS THEN
            NULL;
END; 
COMMIT;