|
Problem IC69790
|
Status: Closed |
PL/SQL: CONTINUE STATEMENT IN FOR LOOP CAUSES INFINITE LOOP. |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
If PL/SQL contains CONTINUE statement in FOR loop, it stops
responding (hangs).
The following steps illustrates one of the scenario causing this
problem.
1. Create a Oracle compatible database.
$ db2set DB2_COMPATIBILITY_VECTOR=ORA
$ db2stop
$ db2start
$ db2sampl
2. Create a PL/SQL procedure.
$ db2 connect to sample
$ db2 set sqlcompat plsql
$ db2 -tvf p1.sql
------------------------------
create or replace procedure P1
is
begin
for r in 1..5 loop
CONTINUE when r=3;
dbms_output.put_line(r);
end loop;
end;
/
------------------------------
3. Run the procedure.
$ db2 set serveroutput on
$ db2 call P1
The procesure call never returns, but the user can interrupt it
by Ctrl+C. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* users who use PL/SQL with CONTINUE statement in FOR LOOP. *
****************************************************************
* PROBLEM DESCRIPTION: *
* If PL/SQL contains CONTINUE statement in FOR loop, it stops *
* responding (hangs). *
* The following steps illustrates one of the scenario causing *
* this problem. *
* *
* 1. Create a Oracle compatible database. *
* $ db2set DB2_COMPATIBILITY_VECTOR=ORA *
* $ db2stop *
* $ db2start *
* $ db2sampl *
* *
* 2. Create a PL/SQL procedure. *
* $ db2 connect to sample *
* $ db2 set sqlcompat plsql *
* $ db2 -tvf p1.sql *
* ------------------------------ *
* create or replace procedure P1 *
* is *
* begin *
* for r in 1..5 loop *
* CONTINUE when r=3; *
* dbms_output.put_line(r); *
* end loop; *
* end; *
* / *
* ------------------------------ *
* *
* 3. Run the procedure. *
* $ db2 set serveroutput on *
* $ db2 call P1 *
* *
* The procesure call never returns, but the user can interrupt *
* it by Ctrl+C. *
****************************************************************
* RECOMMENDATION: *
* Please upgrade to V9.7 fixpack 4 or later. *
**************************************************************** |
| Local Fix: |
Please rewrite the PL/SQL procedure like as below:
create or replace procedure P1
is
begin
for r in 1..5 loop
if r=3 then
goto LOOP_END;
end if;
dbms_output.put_line(r);
<<LOOP_END>>
null;
end loop;
end;
/ |
| available fix packs: |
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
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 problem is first fixed in DB2 V9.7 fixpack 4. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 09.07.2010
12.05.2011
12.05.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP4
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.4
|
 |
