DB2 - Problembeschreibung
Problem IC75399 | Status: Geschlossen |
DB2 MAY CRASH WITH SQL1224N WHILE PROCESSING A QUERY WITH A LARGE NUMBER OF "OR" PREDICATES | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 | |
Problembeschreibung: | |
DB2 may crash with SQL1224N while processing a query with a large number of "OR" predicates, eg. 4000 "OR" predicates. The stack trace will look something like: disconnect_tree disconnect_ptree destroy_ptree sqlnr_trans_pid ... (repeats many times) sqlnr_match_prd sqlnr_subsume_prds_sel_sel sqlnr_subsume_prds sqlnr_subsume_match sqlnr_compute_matchinfo sqlnr_optprep sqlnr_optprep_action sqlnr_comp... | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * All users * **************************************************************** * PROBLEM DESCRIPTION: * * DB2 may crash with SQL1224N while processing a query with a * * * * large number of "OR" predicates, eg. 4000 "OR" predicates. * * * * * * * * The stack trace will look something like: * * * * * * * * disconnect_tree * * * * disconnect_ptree * * * * destroy_ptree * * * * sqlnr_trans_pid * * * * ... (repeats many times) * * * * sqlnr_match_prd * * * * sqlnr_subsume_prds_sel_sel * * * * sqlnr_subsume_prds * * * * sqlnr_subsume_match * * * * sqlnr_compute_matchinfo * * * * sqlnr_optprep * * * * sqlnr_optprep_action * * * * sqlnr_comp... * **************************************************************** * RECOMMENDATION: * * Upgrade to 9.5 FP8 or later. * **************************************************************** | |
Local-Fix: | |
A workaround is to increase AGENT_STACK_SZ DBM configuration parameter. | |
verfügbare FixPacks: | |
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows | |
Lösung | |
The sqlnr_trans_pid function has been made non-recursive. First fixed in 9.5 FP8. | |
Workaround | |
A workaround is to increase AGENT_STACK_SZ DBM configuration parameter. | |
Bug-Verfolgung | |
Vorgänger : APAR is sysrouted TO one or more of the following: IC75582 Nachfolger : | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 29.03.2011 11.07.2011 11.07.2011 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.5.FP8 | |
Problem behoben lt. FixList in der Version | |
9.5.0.8 |