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DB2 - Problem description

Problem IC94729 Status: Closed

POSSIBLE SEGV (CRASH/ABORT) IN SQLRA_GET_SECT_INFO_BY_CURSOR_NAM E() WHEN
REBINDING A PROGRAM CALLING A STORED PROCEDURE

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
The engine might crash (segv/abort) with the following stack 
when explicitly rebinding 
a program that calls a stored procedure: 
 
  0x0000020002F41600 sqlra_get_sect_info_by_cursor_name + 0x0778 
  0x000002000232D1AC sqlnq_sem + 0xc9c0 
  0x0000020001FA71EE 2sqlnp_smactn + 0x01ba 
  0x0000020001F9ECC8 2sqlnp_parser + 0x05f0 
  0x0000020001FA1470 0sqlnp_main + 0x0b20 
  0x0000020001D1F138 0sqlnn_cmpl + 0x283c 
  0x0000020001D243B8 0sqlnn_cmpl + 0x0034 
  0x0000020002ED99AA sqlra_compile_var + 0x1b22 
  0x0000020002EF0D68 sqlra_find_var + 0x1058 
  0x0000020002F66090 sqlra_get_var + 0x0df8 
  0x00000200030B32EC sqlri_ddl_get_section + 0x0070 
  0x00000200030B5F74 sqlri_ddl_common + 0x0914 
  0x00000200030B666A sqlriddl + 0x004e 
  0x00000200030DD198 sqlriSectInvoke + 0x02f8 
  0x0000020002F181D8 sqlra_internal_sql + 0x1b80 
  0x0000020001D3D2EC sqlnn_regen_procedure + 0x1960 
  0x00000200033300B4 address: 0x00000200033300B4; offset in lib: 
0x00000000032D80B4; 
  0x0000020003334318 address: 0x0000020003334318; offset in lib: 
0x00000000032DC318; 
  0x00000200033358A4 sqlrlFindProcedure + 0x10b0 
  0x0000020002000A64 sqlnq_resolve_procedure + 0x096c 
  0x000002000201F084 sqlnq_procedure_tresolve + 0x01b8 
  0x0000020002040374 sqlnq_call_stmt + 0x0274 
  0x0000020001FA71EE sqlnp_smactn + 0x01ba 
  0x0000020001F9F658 sqlnp_parser + 0x0f80 
  0x0000020001FA1470 sqlnp_main + 0x0b20 
  0x0000020001D1F138 sqlnn_cmpl + 0x283c 
  0x0000020001D243B8 sqlnn_cmpl + 0x0034 
  0x0000020002D8E9E8 sqlrr_cmpl + 0x04a8 
  0x0000020002D428F4 sqlrr_compile + 0x0370 
  0x00000200018685FE sqljs_ddm_bndsqlstt + 0x023a 
  0x00000200018327EC sqljsParseInBind + 0x0200 
  0x000002000183317E sqljsParse + 0x0312 
 
The key it seems is to attempt a 'bind' over a program calling a 
procedure 
after a trivial operation (like 'alter table add default value 
to a column') has 
been made but the program has not been recompiled.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 9.7 Fixpack 9 but may require APAR IT04748    * 
* for complete fix                                             * 
****************************************************************
Local Fix:
available fix packs:
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
First fixed in DB2 9.7 Fixpack 9 but further fixed fully via 
APAR IT04748
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
07.08.2013
05.11.2014
05.11.2014
Problem solved at the following versions (IBM BugInfos)
9.7.FP9
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.9 FixList
9.7.0.9 FixList
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