可以使用10046 event來跟蹤
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 [oracle@ggos ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Fri Dec 20 19:48:00 2013 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to an idle instance. SQL> startup mount ORACLE instance started. Total System Global Area 835104768 bytes Fixed Size 2257840 bytes Variable Size 717229136 bytes Database Buffers 113246208 bytes Redo Buffers 2371584 bytes Database mounted. SQL> oradebug setmypid Statement processed. SQL> alter session set events '10046 trace name context forever,level 12'; Session altered. SQL> alter database open; Database altered. SQL> oradebug tracefile_name /u01/app/oracle/diag/rdbms/oraprod/oraprod/trace/oraprod_ora_2820.trc SQL> alter session set events '10046 trace name context off'; Session altered. SQL>?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 WAIT #140190090045240: nam='db file sequential read' ela= 460 file#=1 block#=520 blocks=1 obj#=-1 tim=1387540363264254 ===================== PARSING IN CURSOR #140190090037016 len=188 dep=1 uid=0 oct=1 lid=0 tim=1387540363332140 hv=4006182593 ad='91871900' sqlid='32r4f1brckzq1' create table bootstrap$ ( END OF STMT PARSE #140190090037016:c=9000,e=67806,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim =1387540363332139 EXEC #140190090037016:c=0,e=17461,p=0,cr=0,cu=0,mis=0,r=0,dep=1,og=4,plh=0,tim=1387540363349678 CLOSE #140190090037016:c=0,e=3,dep=1,type=0,tim=1387540363349760 ===================== PARSING IN CURSOR #140190090037016 len=55 dep=1 uid=0 oct=3 lid=0 tim=1387540363350500 hv=2111436465 ad='9185fc98' sqlid='6apq2rjyxmxpj' select line#, sql_text from bootstrap$ where obj# != :1 END OF STMT PARSE #140190090037016:c=999,e=710,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim=1387540363350482 *** 2013-12-20 19:52:43.430 BINDS #140190090037016: Bind#0 oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00 oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0 kxsbbbfp=7f808c8482d0 bln=22 avl=02 flg=05 value=59 EXEC #140190090037016:c=2000,e=116005,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=867914364,tim =1387540363466571 WAIT #140190090037016: nam='db file sequential read' ela= 24 file#=1 block#=520 blocks=1 obj#=59 tim=1387540363466681可以看到是加載BOOTSTRAP$表
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1 2 3 4 5 6 7 8 9 10 11 12 SQL> select dbms_metadata.get_ddl('TABLE','BOOTSTRAP$','SYS') from dual; CREATE TABLE "SYS"."BOOTSTRAP$" ( "LINE#" NUMBER NOT NULL ENABLE, "OBJ#" NUMBER NOT NULL ENABLE, "SQL_TEXT" VARCHAR2(4000) NOT NULL ENABLE ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE(INITIAL 57344 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE "SYSTEM"?
1 2 3 4 5 SQL> select owner,OBJECT_ID from dba_objects where object_name=upper('bootstrap$'); OWNER OBJECT_ID ------------------------------ ---------- SYS 59
