Create procedure statement Hangs in 11g database, doesn't hang in 10.2

Question

I have installed 11g on a windows workstation and created a new database. I then attempted to import a schema from a tried and tested 10.2 database, this hung.
I pinpointed the cause of the hang to a create procedure sstatement within the import file.
I removed the procedure from the 10.2 database, re-exported and imported sucessfully in to the 11g database minus the rogue prrocedure.
I now have a create statement for the procedure thats causing the hangs, and this hangs when I try and run it - it runs fine against my 10.2 database?
I can comment large chunks of the create procedure statment out so I get an anonymous block that runs, and pinpoint the hang down to the inclusion of the the line marked below
(starting FOR UPDATE OF...........).
I cant work out whats going on, I'm no programmer by the way!
Any pointers would be greatly appreciated.
Nick
declare
job_rec job_table%ROWTYPE;
err_msg varchar2(2000);
abort_msg varchar2(2000);
l_ok boolean := TRUE;
l_bat_job varchar2(14) := 's2_novate_RIC';
LINES DELETED FOR PURPOSE OF POSTING CURSOR c_sah IS
     SELECT
          sah_next,
          sah_table_key,
          sah_old_status,
          sah_new_status,
          sah_processed_ind,
          sah_processed_date,
          sah_processed_time
     FROM senatordba.sah_status_audit_history
     JOIN (SELECT distinct to_char(spd_next) spd_next
          FROM senatordba.spd_std_risk_dets
          JOIN senatordba.rso_risk_system_options
          ON rso_spd_next = spd_next
          AND spd_ric_code = l_ric_code
          AND coalesce(l_uw_year, spd_yr) = spd_yr
          AND coalesce(l_risk_ref, spd_ref) = spd_ref
     ON spd_next = sah_table_key
     AND sah_table_code = 'SPD'
     AND sah_status_table_code = 'NOV'
     AND sah_processed_ind = 'N';
FOR UPDATE OF sah_processed_ind, sah_processed_date, sah_processed_time;               <---------if this line is commented out runs OK, if left in, it hangs??
r_sah c_sah%ROWTYPE;
begin
open c_sah;
close c_sah;
end;

Answer 1

Hi Nick, no one else has answered so I thought I'd answer my own question, it appears that I was hitting Oracle bug 9294110. had to uninstall 11.2 and install 11.0.7 instead. very annoyed that I wasted ages diagnosing this known problem. The following test should replicate the hang
connect / as sysdba
create user test identified by test default tablespace users temporary tablespace temp;
grant connect, resource to test;
connect test/test
create table a_tab
( col001 number, col002 number, col003 number, col004 number);
create table b_tab( col001 number);
-- the next statement hangs forever
select
a.col002,
a.col003,
a.col004
from
a_tab a
left outer join b_tab
on a.col001 = b_tab.col001
for update of a.col002,
a.col003,
a.col004;