t 99 Tuning Stats Pack

8/10/2019 t 99 Tuning Stats Pack

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Investigate Reaction To Changes


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Dale Roberts94

Identify Solutions


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Dale Roberts95

Verify Solution


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Dale Roberts96

Verify Improvements


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Dale Roberts97

Rank Findings


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Dale Roberts98

Provide Expert Advice


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Dale Roberts99

Block Dumps


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Dale Roberts100

Block Dumps

Last Resort - Block Dumps


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Dale Roberts101

select f i le_id , b loc k_id, b loc ksf rom dba_extentsw here segm ent_nam e = 'EMP'

and ow ner = 'SCOTT';

FILE_ID BLOCK_ID BLOCKS

----------- --------------- ------------1 50465 3



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Dale Roberts102

ALTER SYSTEM DUMP DATAFILE 5 BLOCK50465

/

ALTER SYSTEM DUMP DATAFILE 5 BLOCK50466 /

ALTER SYSTEM DUMP DATAFILE 5 BLOCK

50467 /Or


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Dale Roberts104

select *f rom em pw here ename = 'MILL ER';

EMPNO ENAME JOB MGR HIREDATE SAL COMMDEPTNO

---------- -------------- ------------ --------- ------------------- -------- -------- --- --------------

7934 MILL ER CL ERK 7782 23-JA N-82 130010

Block Dumps output from udump


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Dale Roberts105

tab 0, row 13, @0x1b0btl: 39 fb: --H-FL-- lb: 0x0 cc: 8col 0: [ 3] c2 50 23col 1: [ 6] 4d 49 4c 4c 45 52col 2: [ 5] 43 4c 45 52 4bcol 3: [ 3] c2 4e 53col 4: [ 7] 77 b6 01 17 01 01 01col 5: [ 2] c2 0ecol 6: *NULL*col 7: [ 2] c1 0b

Block Dumps Data Section


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Dale Roberts106

DUMP OUTPUT - EMPNO:col 0: [ 3] c2 50 23

Hex to Decimal: Col0 = EMPNO = 793450 (Hex) = 80 (Decimal) 1 = 7923 (Hex) = 35 (Decimal) 1 = 34c2: Number in the thousands (c2 is exponent)

Block Dumps Data Section


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Dale Roberts107

DUMP OUTPUT - ENAME:

col 1: [ 6] 4d 49 4c 4c 45 52

Hex to Character: Col1 = ENAME = MILLER4d (Hex) = M (Character)49 (Hex) = I (Character)

4c (Hex) = L (Character)4c (Hex) = L (Character)45 (Hex) = E (Character)52 (Hex) = R (Character)


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Dale Roberts108

Transactions Moving throughOracle: ITL & Undo Blocks

Working with Hash BucketsAnd Buffer Headers (not buffers)


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Dale Roberts

( C h a

i n L a

t c h )

n

1

2

3

Buffer Headers

BufferHeader

HashBuckets

And Buffer Headers (not buffers)

Users asks for a specific datablock address. This is hashed with a

hashing algorithm and placedin the hash bucket that ithashes to. It walks the hash chain using

the cache buffers chain latchto find the block that it needs(curr or cr). There can be many versions

of each block

and hashing data blockaddresses


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Dale Roberts110

addresses

Example: _DB_BLOCK_HASH_BUCKETS(shouldnt have to change this in Oracle9i or 10g)

Buffer hash table (x$bh) has all buffer headers for alldb_block buffers.Buffer header ties to memory base address of the buffer.Buckets usually set to Prime(2*db_block_buffers)A prime number is often used to avoid hashing anomaliesObjects dba (class) is hashed to a hash bucket on the hashchainGet enough hash buckets (_db_block_hash_buckets)Blocks assigned to a hash bucket and onto the hash chainCould have multiple blocks hashed to same chain (if bothhot-issues)Can have multi le versions of a block on same chain


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EMP1 is Block#: 56650(all rows are in this block)


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Dale Roberts112

(all rows are in this block)

select rowid,empno,dbms_rowid.rowid_relative_fno(rowid) fileno,dbms_rowid.rowid_block_number(rowid) blockno,dbms_rowid.rowid_row_number(rowid) rowno, rownum,rpad(to_char(dbms_rowid.rowid_block_number(rowid), 'FM0xxxxxxx') || '.' ||

to_char(dbms_rowid.rowid_row_number (rowid), 'FM0xxx' ) || '.' ||to_char(dbms_rowid.rowid_relative_fno(rowid), 'FM0xxx' ), 18) myridfrom emp1;ROWID EMPNO FILENO BLOCKNO ROWNO ROWNUM------------------ ---------- ---------- ---------- ---------- ----------MYRID------------------AAAM4cAABAAAN1KAAA 7369 1 56650 0 10000dd4a.0000.0001

AAAM4cAABAAAN1KAAB 7499 1 56650 1 20000dd4a.0001.0001 AAAM4cAABAAAN1KAAN 7934 1 56650 13 140000dd4a.000d.0001

14 rows selected.

(So far its clean and only 1copy)


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Dale Roberts113

copy)

select lrba_seq, state, db arfil , db ablk, tch , f lag, hs cn _bas,cr_scn _bas,dec od e(bi tand (flag,1), 0, 'N', 'Y') di rty , /* Dirty bi t */dec od e(bi tand (flag,16), 0, 'N', 'Y') tem p, /* tem po rary bi t */dec od e(bi tand (flag,1536), 0, 'N', 'Y') pi ng , /* pi ng (to sh ared o r nu ll) bit */

dec ode(b itan d (flag,16384), 0, 'N', 'Y') s tale, /* s tale bi t */dec od e(bi tand (flag,65536), 0, 'N', 'Y') di rect , /* di rect acc ess bit */dec od e(bi tand (flag,1048576), 0, 'N', 'Y') new /* new bi t */

f rom x$bhw here db ablk = 56650

order by dbablk;

LRBA_SEQ STATE DBARFIL DBABLK TCH FLAG HSCN_BAS---------- ---------- ---------- ---------- ---------- ---------- ----------CR_SCN_BAS D T P S D N---------- - - - - - -

0 1 1 56650 0 35659776 4294967295

0 N N N N N N


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Dale Roberts

L o g

B u

f f e r s

( C h a

i n L a

t c h )

n

1

2

3

S h a r e

d P o o l

SGA

Cache BuffersBuffer Cache

BufferHeader

HashBuckets

Only ONE blockon the HashChain!

header(Delete a row)


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Dale Roberts115

(Delete a row)

delete f ro m em p1w here co m m = 0;

on e row d eleted.

header(Make some changes 2 copies)


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Dale Roberts116

(Make some changes 2 copies)

select lrba_seq, state, db arfil , db ablk, tch , f lag, hs cn _bas,cr_scn _bas,dec od e(bit and (flag,1), 0, 'N', 'Y') dir ty , /* Dirt y bit */dec od e(bi tand (flag,16), 0, 'N', 'Y') tem p, /* tem po rary bi t */dec od e(bi tand (flag,1536), 0, 'N', 'Y') pin g, /* ping (to sh ared o r nu ll) bit */dec ode(b itan d (flag,16384), 0, 'N', 'Y') st ale, /* s tale b it */

dec od e(bi tand (flag,65536), 0, 'N', 'Y') dir ect, /* di rect acc ess bi t */dec od e(bi tand (flag,1048576), 0, 'N', 'Y') new /* new bit */f rom x$bhw here db ablk = 56650order by db ablk;


0 1 1 56650 1 8200 42949672950 N N N N N N

0 3 1 56650 2 524288 04347881 N N N N N N


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Dale Roberts

L o g

B u

f f e r s

( C h a

i n L a

t c h )

n

1

2

3

S h a r e

d P o o l

SGA


BufferHeader

HashBuckets

Hash Chain isnow TWO! Oneis a CR and theother is Current.

(created when transactions haveundo)


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Dale Roberts118

undo)

SELECT t.addr, t .xidu sn USN, t .xidslo t SLOT, t .xids qn SQL, t .status ,t .used_ublk UBL K, t .used_urec UREC, t . log_io LOG,t.phy _io PHY, t.cr_get, t.cr_c hang e CR_CHA

FROM v$transaction t , v$session sWHERE t.addr = s. tadd r;

ADDR USN SLOT SQL STATUS UBLK-------- ---------- ---------- ---------- ---------------- ----------

UREC LOG PHY CR_GET CR_CHA---------- ---------- ---------- ---------- ----------69E50E5C 5 42 652 ACTIVE 1

1 3 0 3 0

USN is the Undo Segment Number (rollback segment ID)SLOT is the slot number in the rollback segments transaction table.SQN (Wrap) is the sequence number for the transaction.

USN+SLOT+SQN are the three values that uniquely identifies a

Dump the block


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Dale Roberts119

Dump the b lockIt l Xid Uba Flag Lc k

Scn/Fsc

0x01 0x0005.02a.0000028c 0x008000af.02b6.01 ---- 1 fs c

0x0029.000000000x02 0x0004.016.00000fae 0x008000cc .08af.34 C--- 0 s cn

0x0000.003deb5bITL 2 InterestedTransaction Lists

Transaction IDUndo 5 = 5 (decimal)Slot 2a = 42 (decimal)

SEQ 28C = 652

UBA:File.block.sequence.recordUndo block address wherelast change is recorded.

The row Ideleted is stilllocked; fsc is

0x29 = 41 bytes

CommittedTransaction

x$bh up to the max of 6 versionsof block


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Dale Roberts120

of block


0 3 1 56650 1 524416 04350120 N N N N N N

0 3 1 56650 1 524416 04350105 N N N N N N

365 1 1 56650 7 33562633 43501210 Y N N N N N

0 3 1 56650 1 524416 04350103 N N N N N N

0 3 1 56650 1 524416 04350089 N N N N N N

0 3 1 56650 1 524288 04350087 N N N N N N


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Dale Roberts

L o g

B u

f f e r s

( C h a

i n L a

t c h )

n

1

2

3

S h a r e

d P o o l

SGA


BufferHeader

HashBuckets

Hash Chain isnow SIX long!Five CR and theone Current.

Why only 6 versions of aBlock?


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Dale Roberts122

Block?

select a .ksp pinm , b.kspp stvl , b .kspp stdf , a .ksp pd escfrom x$ksppi a , x$ksppc v bw here a .indx = b.indxand su bs tr(ksp pin m ,1,1) = '_'

and kspp inm l ike '%&1%'order by kspp inm ;

KSPPINM-------------------------------------------------------------------------------KSPPSTVL-------------------------------------------------------------------------------KSPPSTDF---------KSPPDESC-------------------------------------------------------------------------------

_db_block_max_cr_dba6TRUE

Maximum Allowed Number of CR buffers per dba

everything back x$bh Still anLRBA:


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Dale Roberts123


0 3 1 56650 1 524416 04350120 N N N N N N

0 3 1 56650 1 524416 04350105 N N N N N N

365 1 1 56650 11 35659777 43507020 Y N N N N N

0 3 1 56650 1 524416 04350103 N N N N N N

0 3 1 56650 1 524416 04350089 N N N N N N

0 3 1 56650 1 524288 04350087 N N N N N N

6 rows selected.

match it up to ITL (no need todump)


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Dale Roberts124

p)

select x idu sn , x id s lot , x ids qn , ub af i l , ub ablk,ub asq n, ub arec

f rom v$transac t ion t , v$sess ion sw here t .ses_add r = s .sadd r;

XIDUSN XIDSLOT XIDSQN UBAFIL UBABLK UBASQN UBAREC

---------- ---------- ---------- ---------- ---------- ---------- ----------4 42 4863 2 851 2718 85 14 667 2 1458 713 25

4.42.4863 = 4.2a.12ff 2.851.2718.8 = 800353.a9e.85.14.667 = 5.e.29b 2.1458.713.25 = 8005b2.2c9.19

Itl Xid Uba F lag Lck Scn/Fsc0x02 0x0004.02a.000012ff 0x00800353.0a9e.08 ---- 2 fs c 0x0003.00000000

0x03 0x 0005.00e.0000029b 0x008005b 2.02c9.19 ---- 14 fs c 0x0000.00000000

Row Level Locks

Cache Layer

Transaction Identifiers


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Dale Roberts125

( C h a

i n L a

t c h )

n

1

3

Cache Buffers

BufferHeader

HashBuckets

LRU Lists LRU Write List

DBWrite

1

2

3

L o g

B u

f f e r sUserRequest

S h a r e

d P

o o

l

SGA

Buffer Cache

2

Cache Layer

2

Transaction Layer

XID 01XID 02

2 Row 3

1 Row 11 Row 2

Lock Byte

ITL 1ITL 2XID 01 ITL 1Itl Xid Uba Flag Lck

0x01 0x0005.02a.0000028c 0x008000af.026b.01 ---- 1

usn#

0x02a 0x028c

RBU Header 5wrap#

Data Block

slot#

XID0X005.02a.0000028c


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Dale Roberts126

Helpful V$/X$ Queries

(FYI Only)

V$ Views over the years


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Dale Roberts127

Version V$ Views X$Tables

6 23 ? (35)7 72 1268.0 132 200

8.1 185 2719.0 227 3529.2 259 394

Listing of V$ Views


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Dale Roberts128

select namefrom v$fixed_tablew here nam e l ike 'GV%'

order by name;NAME---------------------------------

GV$ACCESSGV$ACTIVE_INSTANCESGV$ACTIVE_SESS_POOL_MTHGV$AQ1GV$ARCHIVE

Need GV$ - Instance ID


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Dale Roberts129

select ins t_id, (1 - (su m (deco de(nam e, 'ph ys icalread s ',valu e,0)) /

(su m (deco de(nam e, 'db blo ck gets ' ,value,0))+

su m (deco de(nam e, 'con sis tentgets',value,0))))) * 100 Hit Ratio"

f rom v$syss ta t ;

INST_ID Hit Ratio

-------------- ------------------

Need GV$ - Instance ID


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Dale Roberts130

select ins t_id, (1 - (su m (deco de(nam e, 'ph ys icalread s ',valu e,0)) /

(su m (deco de(nam e, 'db blo ck gets ' ,value,0))

+su m (deco de(nam e, 'con sis tent

gets',value,0))))) * 100 Hit Ratio" f rom gv$syss ta t

g roup by ins t_id ;

INST_ID Hit Ratio

-------------- ------------------

X$ used to create V$


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Dale Roberts131

select *from v$fixed_view_defini t ionw here view _nam e =

'GV$INDEXED_FIXED_COLUMN;

VIEW_NAME VIEW_DEFINITIONgv$indexed_fixed_column select

c. inst_id, kqftanam,kqfco idx , kqfco nam ,kqfco ipo

from X$kq fco c ,X$kqftat

=

Listing of X$ Tables


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Dale Roberts132

select namefrom v$fixed_tablew here nam e l ike 'X%'

order by name;NAME---------------------------------

X$ACTIVECKPTX$BHX$BUFQMX$CKPTBUF

X$CLASS _STAT

Listing of X$ Indexes(419 in 10g; 326 in 9i)


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Dale Roberts133

( g )

select table_nam e, ind ex_num ber,co lumn_name

from gv$indexed_f ixed_columnord er by table_nam e, ind ex_nu m ber,

co lumn_name, co lumn_pos i t ion;

TABLE_NAME INDEX_NUMBER

COLUMN_NAME------------------------------ ------------------------------ ---------

---------------------X$CLA SS_STA T 1 A DDR

X$CLA SS STA T 2 INDX

V$ - System Information


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Dale Roberts134

SQL> select * f rom v$vers ion ;

BANNER---------------------------------------------------------------

Oracle Databas e 10g Enterp ris e Editio n Releas e10.1.0.2.0 Prod

PL /SQL Releas e 10.1.0.2.0 Produc t ionCORE 10.1.0.2.0 Pro d uc tio n

TNS fo r 32-b it W in d o w s: Vers io n 10.1.0.2.0

P roduc t ion

V$ - System Information


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Dale Roberts135

select *f rom v$opt ion ;

PARAMETER VALUE

----------------------------------- -------------Part i t ioning TRUEObjects TRUEReal Ap pl icat ion Clusters FALSE

Ad vanced Repl icat ion TRUEB it-Mapp ed Ind exes TRUE

Great V$ - V$SESSION_WAIT(waiting right now)


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Dale Roberts136

( g g )

select event, sum(decode(wait_time,0,1,0)) WaitingNow",

sum(decode(wait_time,0,0,1)) Previous Waits",

count(*) Total f rom v$sess ion _w ai tg roup by even t

ord er by co un t(*);

WAIT_TIME = 0 means that its waiting WA IT_TIME > 0 m eans that i t previo u sly w aited th is

m an m s

rea - _


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Dale Roberts137

EVENT Wait ing Now Previo us WaitsTotal

--------------------------- ------------------- ------------------

--- ------------db f i le sequ ential read 0 1

1

db f i le sc at tered read 2 02

latch free 0 1 1

enq u eue 2 0 2

*

V$SESSION_WAITFinding Current Specific waits


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Dale Roberts138

Finding Current Specific waits

Buffer Busy Waits or Write Complete Waits Events:SELECT /*+ ordered */ sid, event, owner,

segment_name,segment_type,p1,p2,p3

FROM v$session_wait sw, dba_extents deWHERE de.file_id = sw.p1AND sw.p2 between de.block_id

and de.block_id+de.blocks 1AND (event = 'buffer busy waits'OR event = 'write complete waits')

AND p1 IS NOT null

ORDER BY event sid

_Finding P1, P2, P3


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Dale Roberts139

col name for a20col p1 for a10col p2 for a10

col p3 for a10select event#,name,parameter1 p1,parameter2p2,parameter3 p3

from v$event_name

where name in ('buffer busy waits', 'write completewaits')

EVENT# NAME P1 P2 P3------------- -------------------- ---------- ---------- ----------

- _ _(Last 10 waits for session)


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Dale Roberts140

Buffer Busy Waits or Write Complete Waits Events:SELECT /*+ ordered */ sid, event, owner,

segment_name,

segment_type,p1,p2,p3FROM v$session_wait_history sw, dba_extentsde

WHERE de.file_id = sw.p1

AND sw.p2 between de.block_idand de.block_id+de.blocks 1AND (e vent = 'buffer busy waits'

OR event = 'write complete waits')

AND p1 IS NOT null

rea - _(waiting since the session started)


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Dale Roberts141

select sid, event, total_waits,time_waited, event_id

from v$session_eventwhere time_waited > 0order by time_waited;

SID EVENT TOTAL_WAITS

TIME_WAITED---------- ------------------------------ ----------- -----------

159 process startup 2 1167 latch: redo allocation 4 1

- _ _(session waits by WAIT CLASS)


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Dale Roberts142

select wait_class, total_waits from v system_wait_class;

SID WAIT_CLASS TOTAL_WAITS------- -------------------------------------------- --------------------147 Idle 6582150 Idle 138153 Application 10153 Administrative 1153 Idle 47153 Network 48153 User I/O 4153 System I/O 33

rea - _(waits since the instance started)


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Dale Roberts143

EVENT TOTAL_WAITS TIME_WAITED------------------------------ ----------- -----------

latch: session allocation 5644 1latch: redo allocation 4 1latch: cache buffers chains 4 3enq: TX - index contention 1 3direct path write temp 57 6

row cache lock 1 7

select sid, event, total_waits, time_waited,event_id

from v$system_eventwhere time_waited > 0order by time_waited;

- _ _(system waits by WAIT CLASS)


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Dale Roberts144

select wait_class, total_waits from v system_wait_class;

WAIT_CLASS TOTAL_WAITS-------------------------------------------- --------------------Other 545472Application 105Configuration 92Administrative 1Concurrency 30Commit 793Idle 186169Network 385User I/O 16017

System I/O 25478

rea - _(Added sql_id in 10g)


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Dale Roberts145

select s id , co un t(*) select s id , sq l_id,count(*)

f rom v$open_curso r f rom v$open_cursorgroup by s id g roup by s id , sq l_idhavin g co un t(*) > 300 or der by co un t(*);ord er by co un t(*) desc ;

SID COUNT(*) SID COUNT(*) SQL_ID

----------- ---------------- ----------- ---------------- ---- ------------------

11 450 11 2

V$ - Top 10 as % of All


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Dale Roberts146

select su m (pc t_bu fgets) percentfro m (selec t rank() ov er ( ord er by b uffer_gets d esc )

as rank_bufg ets ,

to _char(100 * rat io_to _repo rt(bu ffer_gets ) ov er(), '999.99') pc t_b u fg ets

fro m v$sq larea )w here rank_bufg ets < 11;

PERCENT------------

97.07

Great V$ - V$SQLAREA or V$SQL


147/177

Dale Roberts147

User1:SQL> con n sys tem /m anagerSQL> create table em p as se lect * f rom sc ot t .em p;

SQL> loc k table emp in exc lus ive m od e;User 2:SQL> con n sys tem /m anager

SQL> loc k table emp in exc lus ive m od e;User 3:SQL> con nect sc ot t /t iger

SQL>lock tableem pin



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Dale Roberts148

select sq l_text , us ers_execu ting , execut ion s,users_opening

from v$sq larea

where sql_text like 'lock table emp%;

SQL_TEXT USERS_EXEC EXECUSERS_OPEN

------------------------------------------ ----------------- ---------- - ----------------

lock tab le em p in exc lus ive m ode 12 3



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Dale Roberts149

select sq l_text , us ers_execu ting , execut ion s,users_opening

f rom v$sq l

where sql_text like 'lock table emp%;

SQL_TEXT USERS_EXEC EXECUSERS_OPEN

------------------------------------------ ----------------- ---------------------------

lock tab le em p in exc lus ive m ode 11 2

V$ - What Users are doing


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Dale Roberts150

select a.s id , a.u sern am e, s .s q l_tex tf rom v$sess ion a, v$sql text sw here a .sq l_addr ess = s .add ressand a.sq l_hash _value = s .hash _valu e

or der by a.us ernam e, a .s id, s .piece;

SID USERNA ME SQL _TEXT------ ------------------- ------------------------------------

11 PLSQL_USER up date s_em plo yee set salary= 10000

9 SYS s elec t a.s id, a.u s ernam e,s .sql_text

9 SYS from v$sess io n a v$sq l text

Great V$ -V$SEGMENT_STATISTICS


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Dale Roberts151

select o bject_nam e, s tat is t ic _nam e, valuef rom v$segm ent_s tat i s t icsw h ere valu e > 100000

ord er by v alue;

OB J ECT_NAME STA TISTIC_NAME VAL UE---------------------------- ------------------------------------- ---

------------ORDERS sp ace alloc ated

96551ORDERS sp ace alloc ated

AWR Segments byBuffer Busy Waits


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Dale Roberts152

AWR Segments by LogicalReads


153/177

Dale Roberts153

X$ - % of Current RedoFilled


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Dale Roberts154

SELECT ROUND((cpodr_bno/lesiz),2)*100||'%'PctCurLogFull

FROM X$kcccp a, X$kccle bWHERE a.cpodr_seq = b.leseq;

PCTCURLOGFULL

-----------------------------------------97%

X$ - % of Current RedoFilled


155/177

Dale Roberts155

alter system switch logfile;System altered.

SELECT ROUND((cpodr_bno/lesiz),2)*100||'%'PctCurLogFull

FROM X$kcccp a, X$kccle bWHERE a.cpodr_seq = b.leseq;

PCTCURLOGFULL-----------------------------------------0%

V$ - V$FILE_HISTOGRAM


156/177

Dale Roberts156

select * f rom v$fi le_his to gram ;FILE# SINGLEBLKRDTIM_MILLI SINGLEBLKRDS

---------- -------------------- ------------1 1 9001 2 1201 4 1311 8 3591 16 10721 32 1752

2 1 32 2 12 4 2

2 8 17

Grid Control 10gR2;Run the AWR Report


157/177

Dale Roberts157

If Time Permits the Future!


158/177

Dale Roberts158

64-Bit advancement ofDirectly addressable memory


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Dale Roberts159

Address DirectIndirect/Extended4 Bit: 16 (640)8 Bit: 256 (65,536)16 Bit: 65,536 (1,048,576)32 Bit: 4,294,967,29664 Bit: 18,446,744,073,709,551,616

When the hardware physically implements thetheoretical possibilities of 64-Bit, things willdramatically change . moving from 32 bit to 64bit ill be like mo in from 4 bit to 32 bit or like

64bit allows Directly Addressing16 Exabytes of Memory


160/177

Dale Roberts

You could stack documents from theEarth so high they would pass Pluto!

Stack singlesheets (2K worth

of text on each)about 4.8B mileshigh to get 16E!!

Human Brain vs. Computer


161/177

Dale Roberts

Brain ComputerIndividual maintainsa ~250M capacity

Stores/processes~ 2G in a lifetime

With over 6.5 Billionpeople in the world,

total memory ofworld is 1.5P, totalprocessed is13 Exabytes

Laptops ~256M inmemory capacity

Stores/processes40G in its lifetime,then buy new one

1.5+ Petabytescan be accessedand managed byone computer withtodays technology(internet is 8P)



162/177

Dale Roberts

Brain Computer10T-1P ofoperations persecond based on

retina/neuronsynapse speed(Moravec).

Based on Brainpower in Wattsconsumption, thebrain performs 100T

100P operationsper second.

Fastest computeris IBM at70.2 Teraflops

(Blue / Gene L)

Computer is aboutequal on the lowend of the brainand could be 1000times slower onthe high end ofbrain estimates.



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BrainComputer

Problem: Weforget a lot ofwhat we see andlearn.

Solution: Drugsthat improve

memory ortechnology thatplugs into thebrain.

Problem: DataDensity limits orSuperparamagnet

ic effect (SPE).Solution: ElectronMicroscopewriting onstainless steel ina vacuum.

Problem: More

What we covered:


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Statspack, Tools & Scripts that you can stilluse

Top Waits

Load ProfileLatch WaitsTop SQLInstance Activity

File I/OThe Future OEM & ADDMHelpful V$/X$Summary

For More Information


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www.tusc.comOracle9iPerform ance Tuning

Tips & Techn iques ;Rich ard J . Niem iec;Oracle Press (May2003)

Oracle 10g Tun ing(Early 2007)

If you are going through hell, keep going - Churchill


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The strength of the team is each individualmemberthe strength of each member is the

team.

--Phil Jackson

The Oracle User Groups are part of your team

References


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Oracle9i Perform ance Tun ing Tips & Tech niq ues , Rich NiemiecThe Self-m anaging Database: A uto m aticPerform ance Diagn os is ; Karl Dias & MarkRamacher, Oracle CorporationEM Grid Co ntro l 10g; otn.oracle.com, OracleCorporation

Oracle Enterp rise Manag er 10g: Makin g the Grid aReality ; Jay Rossiter, Oracle CorporationThe Self-M anagin g Database: Guided Ap pl icat ionand SQL Tuning ; Benoit Dageville, Oracle

C ti

References


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Oracle Database 10g Perfo rm ance Ov erview ;Herv Lejeune, Oracle CorporationOracle 10g; Penn y A vri l , , Oracle Corporation

Forr ester Rep o rts , In c. , Tech Strategy Res earc h ,April 2002, Organic ITInternals o f Real A pp l icat ion Cluster , MadhuTumma, Credit Suisse First Boston Oracle9i RAC; Real Ap plic at ion Clus tersConfigu rat ion and Internals , Mike Ault & MadhuTumma

O l T i P t t i O l C ti

References


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www.tusc.com, www.oracle.com,www.ixora.com, www.laoug.org, www.ioug.org,technet.oracle.comOracle PL/SQL Tips and Techn iqu es, Jo sep h P.

Trezzo; Oracle PressOracle9i Web Developm ent, B radley D. B ro w n;Oracle PressSpecia l thank s to Steve Adam s, Mike A ul t , B radB row n, Don B urleson , K evin Gilpin , HerveLejeune, Rand y Sw anso n and Jo e Trezzo.Landauer 1986. T.K. Landauer; How much dopeop le remem ber? Som e es t im ates of thequant i ty of inform at ion in lon g- term memory,C i ti S i 10 4 477 493

ReferencesOracle Database 10 g A utomated Features , Mike


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Ault, TUSCOracle Database 10 g New Features, Mike Ault,Daniel Liu, Madhu Tumma, Rampant TechnicalPress, 2003, www.rampant.cc

Oracle Database 10 g - The World's First Self-Managing, Grid-Ready Database Arrives, KelliWiseth, Oracle Technology Network, 2003,otn.oracle.com

References


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Oracle 10g; Penny Avril, Principal DatabaseProduct Manager, Server Technologies, OracleCorporation

To Infinity and Beyond, Brad Brown, TUSCForrester Reports, Inc., TechStrategyResearch, April 2002, Organic ITInternals o f Real A pp l icat ion Cluster , MadhuTumma, Credit Suisse First Boston Oracle9i RAC; Real Ap plic at ion Clus tersConfigu rat ion and Internals , Mike Ault &Madhu Tumma

ReferencesOracle 10g documentation


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Oracle 9i RAC class & instructors comments Oracle 9i Concepts manualhttp://geocities.com/pulliamrick/

Tips for Tunin g Oracle9i RAC on L inux , Kurt

Engeleiter, Van Okamura, OracleLeveragin g Oracle9i RAC o n Int el-basedservers to build an Adaptive Architecture ,Stephen White, Cap Gemini Ernst & Young, Dr

Don Mowbray, Oracle, Werner Schueler, Intel

ReferencesRunning YOUR App l ica t ion s on Real Ap pl icat ionCl (RAC) RACD l B


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Clusters (RAC); RAC Deploym ent B est

Pract ices, Kirk McGowan, Oracle CorporationThe Present , The Futu re bu t no t Science Fict io n;Real Ap pl icat ion Clus ters Develop m ent , AngeloPruscino, OracleB uilding the Adapt ive Enterpr ise ; Adapt iveA rch i tectu re and Oracle , Malcolm Carnegie, CapGemini Ernst & YoungInternals of Real App l icat ion Cluster , MadhuTumma, Credit Suisse First BostonCreat ing Bu siness Prosp er ity in a Chal lengingEnviro nm ent , Jeff Henley

ReferencesReal A pp licat ion Clu sters , Real Cus to m ers RealR l t E ik P t T h i l M


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Resul ts , Erik Peterson, Technical Manager,

RAC, Oracle Corp.Dep loy ing a High ly Manageable Oracle9i RealA pp l icat ions Database , Bill Kehoe, OracleGet t ing the mo st ou t of y our da tabase, Andy

Mendelsohn, SVP Server Technologies, OracleCorporationOracle9iAS Clusters : Solut ion s for Scalabi l i tyand A vailabi l i ty , Chet Fryjoff , Pro du ct Manag er,Oracle Corp orat ion Oracle RAC and Lin ux in th e real enterpr ise , Mark Clark, Director, Merrill Lynch Europe PLC,Global Database Technologies

TUSC Services


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Oracle Technical SolutionsFull-Life Cycle Development ProjectsEnterprise ArchitectureDatabase Services

Oracle Application SolutionsOracle Applications Implementations/UpgradesOracle Applications Tuning

Managed Services

24x7x365 Remote Monitoring & ManagementFunctional & Technical Support

Training & MentoringOracle Authorized Reseller

Copyright Information


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Neither TUSC nor the author guarantee thisdocument to be error-free. Please providecomments/questions to [email protected].

TUSC 2007. This document cannot bereproduced without expressed written consentfrom an officer of TUSC, but the DOUG mayreproduce or copy this for conference use.

Contact InformationRich Niemiec: [email protected]

Acknowledgementswww.tusc.com


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