DB2 - Problembeschreibung
Problem IC76410 | Status: Geschlossen |
QUERY MAY FAIL WITH A -901 WHEN OPTIMIZER TRIES TO MERGE MULTIPLE UNION OPERATORS | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 | |
Problembeschreibung: | |
A query may fail with a -901 under the following conditions: 1. There are multiple UNION operators at different level of query. 2. One of the UNION operators has 3 or more duplicate branches, i.e. branches having exactly same set of tables, views, join and local predicates. An associated trap file may have below StackTrace: --- -------Frame------ ------Function + Offset------ 0x09000000008CF470 pthread_kill + 0xB0 0x09000000044A0F88 sqloDumpEDU + 0x74 0x09000000044A1E4C sqldDumpContext__FP8sqeAgentiN42PCcPvT2 + 0x11C 0x09000000044A1C64 sqldDumpContext__FP8sqeAgentiN42PCcPvT2@glueABB + 0x94 0x09000000047D3E8C sqlrr_dump_ffdc__FP8sqlrr_cbiT2 + 0x350 0x0900000003C7420C sqlzeDumpFFDC__FP8sqeAgentUiP5sqlcai + 0x24 0x0900000003C73FB8 sqlzeSqlCode__FP8sqeAgentUiUlT2P5sqlcaiUsPc + 0x120 0x0900000003C73CCC sqlnn_erds__FiN41e + 0x124 0x0900000005148BB0 sqlnn_erds__FiN41e@glue611 + 0xB4 0x09000000047EA08C prd_pulldown__9sqlnq_qunFPP9sqlnq_pidPFP9sqlnq_qncPiPP9sqlnq_pid T2_iPi + 0xE8 0x09000000060B056C sqlnr_sop_fix_hxp__FP9sqlnq_oprPiCP3loc + 0x58C 0x09000000060A77D4 sqlnr_optprep__FP9sqlnq_qur + 0x1040 0x09000000060A66E4 sqlnr_optprep_action__FP10sqlnr_qrwaPiP14sqlnr_progress + 0x10 0x0900000004AE4BF0 sqlnr_comp__FPiiP16sqlnr_rule_stateP10sqlnr_qrwaP14sqlnr_progres s@AF191_165 + 0x170 0x0900000004AE2388 sqlnr_comp__FPiiP16sqlnr_rule_stateP10sqlnr_qrwaP14sqlnr_progres s + 0x44 0x0900000004AE21AC sqlnr_seq__FPiP10sqlnr_qrwaP14sqlnr_progressP12sqlnr_rclass + 0xBC 0x09000000060F3740 sqlnr_rcc__FiP10sqlnr_qrwaPiP14sqlnr_progress + 0x178 0x0900000006508A5C sqlnr_exe__FP9sqlnq_qur + 0x10E4 0x090000000652E69C sqlnr_exe__FP9sqlnq_qur@glue113A + 0x70 0x09000000035ADC50 sqlnn_cmpl__FP8sqeAgentP11sqlrrstrings17sqlnn_compileModeT3P14sq lrr_cmpl_enviT7PP9sqlnq_qur + 0x2294 0x0900000003C63800 sqlnn_cmpl__FP8sqeAgentP11sqlrrstrings17sqlnn_compileModeT3P14sq lrr_cmpl_env + 0x24 0x0900000003C095C4 sqlra_compile_var__FP8sqlrr_cbP14sqlra_cmpl_envPUciUsN54P16sqlra _cached_varPiPUl + 0x610 0x0900000003C08240 sqlra_find_var__FP8sqlrr_cbP17sqlra_cached_stmt13sqlra_stmt_idUi T4PUcT4UsUcP14sqlra_cmpl_enviPiT11_T12_N311_T12_P14SQLP_LOCK_INF OPP16sqlra_cached_varT12_PUlb + 0x404 0x0900000003C07CAC sqlra_get_var__FP8sqlrr_cbiT2bPbT5 + 0x444 0x09000000040B7728 sqlrr_prepare__FP14db2UCinterfaceP16db2UCprepareInfo + 0x138 0x0900000003B71FF8 sqljs_ddm_prpsqlstt__FP14db2UCinterfaceP13sqljDDMObject + 0xAF0 0x09000000036A2EB4 sqljsParseRdbAccessed__FP13sqljsDrdaAsCbP13sqljDDMObjectP14db2UC interface + 0x10C 0x0900000003D0ADE0 sqljsParse__FP13sqljsDrdaAsCbP14db2UCinterface - 0x124 0x0900000003D0C730 @63@sqljsSqlam__FP14db2UCinterfaceP8sqeAgentb + 0x1D8 0x0900000003E8A558 @63@sqljsDriveRequests__FP8sqeAgentP14db2UCconHandle + 0x98 0x0900000003E8A3C8 @63@sqljsDrdaAsInnerDriver__FP18SQLCC_INITSTRUCT_Tb + 0xE0 0x0900000003E8A13C sqljsDrdaAsDriver__FP18SQLCC_INITSTRUCT_T + 0xD8 0x0900000003E8BE00 RunEDU__8sqeAgentFv + 0x11C 0x0900000003E96748 EDUDriver__9sqzEDUObjFv + 0x78 0x0900000003E23550 sqloEDUEntry + 0x57C --- Db2diag.log may have below associated message: --- 2011-04-25-13.57.43.493681+540 I13726A871 LEVEL: Severe PID : 860292 TID : 62836 PROC : db2sysc 0 INSTANCE: db2inst1 NODE : 000 DB : DB2 APPHDL : 0-22222 APPID: 192.168.1.168.110425050011 AUTHID : DB2INST1 EDUID : 62836 EDUNAME: db2agent (DB050005) 0 FUNCTION: DB2 UDB, relation data serv, sqlrr_dump_ffdc, probe:300 DATA #1 : SQLCA, PD_DB2_TYPE_SQLCA, 136 bytes sqlcaid : SQLCA sqlcabc: 136 sqlcode: -901 sqlerrml: 42 sqlerrmc: Pulldown attempted on a column with no hxp sqlerrp : SQLNQ0A1 sqlerrd : (1) 0x00000000 (2) 0x00000000 (3) 0x00000000 (4) 0x00000000 (5) 0xFFFFFFF6 (6) 0x00000000 sqlwarn : (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) sqlstate: 2011-04-25-13.57.43.505683+540 I14598A218 LEVEL: Severe PID:860292 TID:62836 NODE:000 Title: SQLCA Dump File:/home/db2inst1/db2dump/FODC_AppErr_.... --- | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * DB2 UDB Version 9.5. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error description field for more information. * **************************************************************** * RECOMMENDATION: * * Upgrade to Version 9.5 FixPack 9. * **************************************************************** | |
Local-Fix: | |
Not available. | |
verfügbare FixPacks: | |
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows | |
Lösung | |
Problem was first fixed in DB2 UDB Version 9.5 FixPack 9. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Bug-Verfolgung | |
Vorgänger : APAR is sysrouted TO one or more of the following: IC76434 Nachfolger : | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 15.05.2011 08.03.2012 08.03.2012 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.5.FP9 | |
Problem behoben lt. FixList in der Version | |
9.5.0.9 |