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DB2 - Problem description

Problem IC83718 Status: Closed

Signal #11 crash or 901 when calling SQL procedure while CASTing an OUT
parameter marker or host variable

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
DB2 will terminate abnormally when calling an SQL procedure 
under the following conditions: 
 
- The procedure is declared with at least one OUT parameter of 
type CHAR; 
- The corresponding parameter in the CALL statement is a 
parameter marker that has been cast to an INTEGER type. 
 
For example: 
 
create or replace procedure proc1(out param CHAR(5)) 
begin 
end 
% 
call proc1(CAST(? as INTEGER)); 
% 
 
You will observe a stack trace similar to the following: 
 
ossDumpStackTraceEx 
OSSTrapFile6dumpEx 
sqlo_trce 
sqloEDUCodeTrapHandler 
__restore_rt 
sqlddFreeDD 
sqlnq_describe_call_parms 
sqlnq_describe 
sqlnn_cmpl 
sqlnn_cmpl 
sqlra_compile_var 
sqlra_find_var 
(truncated stack) 
 
ALSO : 
901 can be reported while executing CALL stmt with NOOP CAST on 
OUT/INOUT type parameter 
 
CREATE or replace PROCEDURE  P_INOUT 
INOUT RES FLOAT) 
begin 
end 
% 
CREATE or replace PROCEDURE CALLER1 
LANGUAGE SQL 
P1: 
BEGIN 
  DECLARE V1 FLOAT;-- 
  CALL  P_INOUT(double(V1));-- 
END 
%
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Apply v9.7 Fixpack 7 to the DB2 database server.             * 
****************************************************************
Local Fix:
Do not use CAST on OUT/INOUT parameter markers
available fix packs:
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Solution
This is a server side fix.  First fixed in v9.7 Fixpack 7.
Workaround
See LOCAL FIX.
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC88350 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
24.05.2012
20.10.2012
20.10.2012
Problem solved at the following versions (IBM BugInfos)
9.7.FP7
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.7 FixList