一次ORA-4030问题诊断及解决(二)
2008-09-08 12:51:16 来源:WEB开发网 [oracle@bjtestdata]$sqlplusjiangsu/jiangsu
SQL*Plus: Release 9.2.0.4.0 - Production on 星期四 5月 1 03:02:11 2008
Copyright(c)1982,2002,OracleCorporation.Allrightsreserved.
连接到:
Oracle9iEnterpriseEditionRelease9.2.0.4.0-64bitProduction
WiththePartitioning,OLAPandOracleDataMiningoptions
JServerRelease9.2.0.4.0-Production
SQL>ALTERSESSIONSETEVENTS'10053TRACENAMECONTEXTFOREVER,LEVEL1';
会话已更改。
SQL>EXPLAINPLANFORSELECT*FROMORD_HIT_COMMWHEREENABLE_FLAG=1;
已解释。
SQL>HOST
[oracle@bjtestudump]$more/opt/oracle/admin/bjtest/udump/bjtest_ora_5933.trc
/opt/oracle/admin/bjtest/udump/bjtest_ora_5933.trc
Oracle9iEnterpriseEditionRelease9.2.0.4.0-64bitProduction
WiththePartitioning,OLAPandOracleDataMiningoptions
JServerRelease9.2.0.4.0-Production
ORACLE_HOME=/opt/oracle/product/9.2
Systemname:Linux
Nodename:bjtest
Release:2.6.18-8.el5xen
Version:#1SMPTueJun523:53:34EDT2007
Machine:x86_64
Instancename:bjtest
Redothreadmountedbythisinstance:1
Oracleprocessnumber:10
Unixprocesspid:5933,image:oracle@bjtest(TNSV1-V3)
***2008-05-0103:03:02.106
***SESSIONID:(25.3298)2008-05-0103:03:02.084
QUERY
EXPLAINPLANFORSELECT*FROMORD_HIT_COMMWHEREENABLE_FLAG=1
***************************************
PARAMETERSUSEDBYTHEOPTIMIZER
********************************
OPTIMIZER_FEATURES_ENABLE=9.2.0
OPTIMIZER_MODE/GOAL=Choose
.
.
.
_CPU_TO_IO=0
_PRED_MOVE_AROUND=TRUE
***************************************
BASESTATISTICALINFORMATION
***********************
TablestatsTable:ORD_HIT_COMMAlias:ORD_HIT_COMM
TOTAL::CDN:1681983NBLKS:89780AVG_ROW_LEN:733
_OPTIMIZER_PERCENT_PARALLEL=0
***************************************
SINGLETABLEACCESSPATH
Column:ENABLE_FLACol#:21Table:ORD_HIT_COMMAlias:ORD_HIT_COMM
NDV:2NULLS:0DENS:2.9971e-07
NOHISTOGRAM:#BKT:1#VAL:2
TABLE:ORD_HIT_COMMORIGCDN:1681983ROUNDEDCDN:1CMPTDCDN:1
Accesspath:tscResc:8636Resp:8636
BEST_CST:8636.00PATH:2Degree:1
***************************************
OPTIMIZERSTATISTICSANDCOMPUTATIONS
***************************************
GENERALPLANS
***********************
Joinorder[1]:ORD_HIT_COMM[ORD_HIT_COMM]
Bestsofar:TABLE#:0CST:8636CDN:1BYTES:733
Final:
CST:8636CDN:1RSC:8636RSP:8636BYTES:733
IO-RSC:8636IO-RSP:8636CPU-RSC:0CPU-RSP:0
PLAN
Costofplan:8636
Operation...........Objectname.....Options.........Id...Pid..
SELECTSTATEMENT0
TABLEACCESSORD_HIT_COMMFULL1
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