=====================
PARSING IN CURSOR #3041965520 len=32 dep=1 uid=0 oct=7 lid=0 tim=1323806332068299 hv=2990570705 ad='2d5b38c4' sqlid='8tp9fa2t40z6j'
delete from user$ where user#=:1
END OF STMT
PARSE #3041965520:c=1000,e=1113,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim=1323806332068297
BINDS #3041965520:
 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=b551c280  bln=22  avl=02  flg=05
  value=85
WAIT #3041965520: nam='db file sequential read' ela= 65 file#=3 block#=8419 blocks=1 obj#=0 tim=1323806332071651
EXEC #3041965520:c=4000,e=3682,p=1,cr=1,cu=7,mis=1,r=1,dep=1,og=4,plh=3816956542,tim=1323806332072277
STAT #3041965520 id=1 cnt=0 pid=0 pos=1 obj=0 op='DELETE  USER$ (cr=1 pr=1 pw=0 time=930 us)'
STAT #3041965520 id=2 cnt=1 pid=1 pos=1 obj=47 op='INDEX RANGE SCAN I_USER2 (cr=1 pr=0 pw=0 time=41 us cost=1 size=37 card=1)'
CLOSE #3041965520:c=0,e=14,dep=1,type=0,tim=1323806332072647
=====================
PARSING IN CURSOR #3041965520 len=438 dep=1 uid=0 oct=2 lid=0 tim=1323806332074048 hv=1755424277 ad='2d533948' sqlid='2trzmq5na39hp'
insert into user$(user#,name,password,ctime,ptime,datats#,tempts#,type#,defrole,resource$,ltime,exptime,astatus,lcount,defschclass,
spare1,spare4,ext_username,spare2)values (:1,:2,:3,SYSDATE,DECODE(to_char(:4, 'YYYY-MM-DD'), '0000-00-00', to_date(NULL), :4),
:5,:6,:7,:8,:9,DECODE(to_char(:10, 'YYYY-MM-DD'), '0000-00-00', to_date(NULL), :10),DECODE(to_char(:11, 'YYYY-MM-DD'), '0000-00-00', 
to_date(NULL), :11),:12,:13,:14,:15,:16,:17,:18)
END OF STMT
PARSE #3041965520:c=1000,e=1325,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim=1323806332074045
BINDS #3041965520:
 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=b551be74  bln=22  avl=02  flg=05
  value=85
 Bind#1
  oacdty=01 mxl=32(03) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=32 off=0
  kxsbbbfp=2d50086e  bln=32  avl=03  flg=09
  value="XFF"
 Bind#2
  oacdty=01 mxl=32(16) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=32 off=0
  kxsbbbfp=2d50088e  bln=32  avl=16  flg=09
  value="72829DD49D510C88"
 Bind#3
  oacdty=12 mxl=07(07) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=00 csi=00 siz=8 off=0
  kxsbbbfp=2d5008e1  bln=08  avl=07  flg=09
  value="12/14/2011 3:54:26"
 Bind#4
  No oacdef for this bind.
 Bind#5
  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=b551be50  bln=24  avl=02  flg=05
  value=4
 Bind#6
  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=b551be2c  bln=24  avl=02  flg=05
  value=3
 Bind#7
  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=b551be08  bln=24  avl=02  flg=05
  value=1
 Bind#8
  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=b551bde4  bln=24  avl=02  flg=05
  value=1
 Bind#9
  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=b551bdc0  bln=24  avl=01  flg=05
  value=0
 Bind#10
  oacdty=12 mxl=07(07) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=00 csi=00 siz=8 off=0
  kxsbbbfp=2d5008ef  bln=08  avl=07  flg=09
  value="0/0/-10100 -1:-1:-1"
 Bind#11
  No oacdef for this bind.
 Bind#12
  oacdty=12 mxl=07(07) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=00 csi=00 siz=8 off=0
  kxsbbbfp=2d5008e8  bln=08  avl=07  flg=09
  value="0/0/-10100 -1:-1:-1"
 Bind#13
  No oacdef for this bind.
 Bind#14
  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=b551bd9c  bln=24  avl=01  flg=05
  value=0
 Bind#15
  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=b551bd78  bln=24  avl=01  flg=05
  value=0
 Bind#16
  oacdty=01 mxl=32(22) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=32 off=0
  kxsbbbfp=2d5008ae  bln=32  avl=22  flg=09
  value="DEFAULT_CONSUMER_GROUP"
 Bind#17
  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=b551bd54  bln=24  avl=01  flg=05
  value=0
 Bind#18
  oacdty=01 mxl=128(62) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=128 off=0
  kxsbbbfp=2d500902  bln=128  avl=62  flg=09
  value="S:4CB6F7F259A3E37046AEA521C6F644DAE4C3EE6136FFB7B512CB71B1DFD4"
 Bind#19
  oacdty=01 mxl=32(00) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=32 off=0
  kxsbbbfp=00000000  bln=32  avl=00  flg=09
 Bind#20
  oacdty=02 mxl=22(00) mxlc=00 mal=00 scl=00 pre=00
  oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
  kxsbbbfp=b551bd30  bln=24  avl=00  flg=05
EXEC #3041965520:c=7000,e=6819,p=0,cr=1,cu=5,mis=1,r=1,dep=1,og=4,plh=0,tim=1323806332081153
STAT #3041965520 id=1 cnt=0 pid=0 pos=1 obj=0 op='LOAD TABLE CONVENTIONAL  (cr=1 pr=0 pw=0 time=461 us)'
CLOSE #3041965520:c=0,e=13,dep=1,type=0,tim=1323806332081334



PARSING IN CURSOR #3041965520 len=3509 dep=1 uid=57 oct=47 lid=57 tim=1323806332169524 hv=1920321438 ad='2d60623c' sqlid='38spc81t7bjwy'
declare
 TYPE attrs_cur IS REF CURSOR;
 m_cur       attrs_cur;
 m_event   varchar2(512);
 m_user    varchar2(512);
 m_owner   varchar2(512);
 m_user1   varchar2(512);
 m_type    varchar2(512);
 m_name    varchar2(5120);
 m_column  varchar2(5120);
 m_cnt     NUMBER;
 m_stmt    varchar2(512);
 m_ret     varchar2(3000);
 m_ret1     varchar2(512);
 m_o_stmt VARCHAR2(5120);
begin
 m_stmt:='select sys.dbms_standard.dictionary_obj_type from dual';
 execute immediate m_stmt into m_type;
 if(not (m_type='TABLE' or m_type='TRIGGER' or m_type='USER' or m_type='TABLESPACE'))
 then
   return;
 end if;
 m_stmt:='select sys.dbms_standard.sysevent from dual';
 execute immediate m_stmt into m_event;
 m_stmt:='select SYS_CONTEXT(''USERENV'',''SESSION_USER'') from dual';
 execute immediate m_stmt into m_user;
 m_stmt:='select sys.dbms_standard.login_user  from dual';
 execute immediate m_stmt into m_user1;
 m_stmt:='select sys.dbms_standard.dictionary_obj_owner from dual';
 execute immediate m_stmt into m_owner;
 m_stmt:='select sys.dbms_standard.dictionary_obj_name from dual';
 execute immediate m_stmt into m_name;
 if((instr(upper(m_name),'MDRT_')>0) and m_event='DROP')
 then
   return;
 end if;
 if (m_owner!='MDSYS' and m_owner!='SYS' and m_type='TABLE' and m_event='CREATE')
 then
   m_stmt:='select sdo_geor_def.listAllGeoRasterFieldsStr(:1,:2) from dual';
   execute immediate m_stmt  into m_ret  using SYS.DBMS_ASSERT.SCHEMA_NAME(m_owner),SYS.DBMS_ASSERT.SIMPLE_SQL_NAME(m_name);
   m_ret:=trim(m_ret);
   while (length(m_ret)!=0) loop
     if (instr(m_ret,' $$__## ')!=0)
     then
       m_ret1:=trim(substr(m_ret,1,instr(m_ret,' $$__## ')-1));
       m_ret:=trim(substr(m_ret,instr(m_ret,' $$__## ')+8));
     else
       m_ret1:=trim(m_ret);
       m_ret:='';
     end if;
     m_stmt:='begin SDO_GEOR_UTL.createDMLTrigger(:1,:2); end;';
    execute immediate m_stmt using m_owner||'.'||m_name,SYS.DBMS_ASSERT.QUALIFIED_SQL_NAME(m_ret1);
   end loop;
   return;
 end if;
  if (m_name!='MDSYS' and m_type='USER' and m_event='DROP')
  then
     m_stmt:='call sdo_geor_def.doDropUserAndTable()';
     execute immediate m_stmt;
  end if;
  if (m_owner!='MDSYS' and m_owner!='SYS' and m_type='TABLE' and m_event='DROP')
  then
     m_stmt:='call sdo_geor_def.doDropUserAndTable()';
     execute immediate m_stmt;
  end if;
  if (m_owner!='MDSYS' and m_owner!='SYS' and m_type='TABLE' and m_event='TRUNCATE')
  then
     m_stmt:='call sdo_geor_def.doTruncateTable()';
     execute immediate m_stmt;
  end if;
  if (m_owner!='MDSYS' and m_owner!='SYS' and m_type='TABLE' and m_event='ALTER')
  then
     m_stmt:='call sdo_geor_def.doAlterRenameTable()';
     execute immediate m_stmt;
  end if;
  if (m_owner!='MDSYS' and m_owner!='SYS' and m_type='TABLE' and m_event='RENAME')
  then
     m_stmt:='call sdo_geor_def.doRenameTable()';
     execute immediate m_stmt;
  end if;
 if (m_event='DROP' and m_type='TABLE')
 then
   m_stmt:='delete from sdo_geor_ddl__table$$ where id=2';
   EXECUTE IMMEDIATE m_stmt;
 end if;
 if ((m_type='USER' and m_event='DROP') or (m_type='TABLESPACE' and m_event='DROP'))
 then
   m_stmt:='delete from sdo_geor_ddl__table$$';
   EXECUTE IMMEDIATE m_stmt;
 end if;
 Exception
   when others then
     if(sqlcode=-13391)
     then
       m_stmt:=sqlerrm;
       m_stmt:=substr(m_stmt,11);
       m_stmt:='call mderr.raise_md_error(''MD'', ''SDO'', -13391,'''||m_stmt||''')';
       execute immediate m_stmt;
     end if;
end;

通过10046生成的trace文件分析,该功能主要是通过drop user+create user+modify object dict来实现该功能