Sql tuning made easier with sqltxplain (sqlt)

•

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Enkitec

Technologie

SQL
Tuning
Made
Easier
with

SQLTXPLAIN
(SQLT)

Carlos
Sierra

Carlos
Sierra

•  Consultant/Developer/DBA

•  Oracle
Performance

•  SQLTXPLAIN
(SQLT)

•  SQL
Tuning

•  Tools

Enkitec
(c)
2014
2

Topics

•  SQLTXPLAIN
101

•  Sample
Output

•  InstallaLon

•  Using
XTRACT
and
XECUTE

•  Demos

Enkitec
(c)
2014
3

SQLTXPLAIN
(SQLT)

•  Tool
for
SQL
Tuning

– DiagnosLcs

•  Inputs
one
SQL

•  Outputs
one
compressed
ﬁle

– Main
HTML
Report
+
many
other
ﬁles

•  MOS
215187.1

– Free
download
and
use

Enkitec
(c)
2014
4

Some
Tools

•  One
Database

– ORAchk,
OEM,
AWR,
OS
Stats,
etc

•  One
Process

– SQL
Trace,
TKPROF,
Method
R,
ASH,
etc

•  One
SQL

– SQLT,
SQLHC,
planx,
sqlmon,
sqlash,
etc

Enkitec
(c)
2014
5

Demos
1
and
2

•  Main
HTML
Report

•  SQLT
XTRACT
Output

Enkitec
(c)
2014
7

SQLT
InstallaLon

•  My
Oracle
Support
(Metalink)

– Note
215187.1

•  Unzip
sqlt.zip
on
Database
Server

•  Read
sqlt/sqlt_instrucLons.html

•  Execute
sqlt/install/sqcreate.sql

– Connect
as
SYS

Enkitec
(c)
2014
8

InstallaLon
Parameters

Enkitec
(c)
2014
9

Using
SQLT

•  Read
sqlt/sqlt_instrucLons.html

•  Navigate
to
sqlt/run

•  Connect
as
applicaLon
user

– Or
user
granted
sqlt_user_role
or
dba

•  Execute
one
of
these
two

– sqltxtract.sql

– sqltxecute.sql

Enkitec
(c)
2014
10

SQLT
XTRACT

•  Inputs

– SQL_ID

– SQLTXPLAIN
Password

•  Outputs

– ZIP
File

•  Main
HTML
Report

•  Other
Files

Enkitec
(c)
2014
11

SQLT
XECUTE

•  Inputs

– File
Name
with
SQL

•  Binds
declaraLon
and
assignment

•  SQL
Text

– SQLTXPLAIN
Password

•  Outputs

– ZIP
File

Enkitec
(c)
2014
12

Demos
3
and
4

•  SQLT
InstallaLon

•  SQLT
XTRACT

– SQL_ID
8u0n7w1jug5dg

Enkitec
(c)
2014
13

Conclusion

•  SQLT
is
a
comprehensive
tool
for
SQL
Tuning

•  SQLT
is
free
to
download
and
use

•  SQLT
is
easy
to
use

•  SQLT
makes
SQL
Tuning
easier

Enkitec
(c)
2014
14

Mastering
SQLTXPLAIN

•  PracLce
using
SQLT

•  Read
Stelios
Charalambides
book

Enkitec
(c)
2014
15

Some
SQL
Tuning
Masters

•  Jonathan
Lewis

•  Maria
Colgan

•  Tom
Kyte

•  Kerry
Osborne

•  Guy
Harrison

•  Karen
Morton

Enkitec
(c)
2014
16

Contact
InformaLon

•  carlos.sierra@enkitec.com

•  carlos-‐sierra.net

•  @csierra_usa

Enkitec
(c)
2014
17

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Sql tuning made easier with sqltxplain (sqlt)

1. SQL Tuning Made Easier with SQLTXPLAIN (SQLT) Carlos Sierra

8. SQLT InstallaLon •  My Oracle Support (Metalink) – Note 215187.1 •  Unzip sqlt.zip on Database Server •  Read sqlt/sqlt_instrucLons.html •  Execute sqlt/install/sqcreate.sql – Connect as SYS Enkitec (c) 2014 8

10. Using SQLT •  Read sqlt/sqlt_instrucLons.html •  Navigate to sqlt/run •  Connect as applicaLon user – Or user granted sqlt_user_role or dba •  Execute one of these two – sqltxtract.sql – sqltxecute.sql Enkitec (c) 2014 10