First commit

LICENSE.txt

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+Freeware License, some rights reserved
+
+Copyright (c) 2008 Christian Antognini
+
+Permission is hereby granted, free of charge, to anyone obtaining a copy 
+of this software and associated documentation files (the "Software"), 
+to work with the Software within the limits of freeware distribution and fair use. 
+This includes the rights to use, copy, and modify the Software for personal use. 
+Users are also allowed and encouraged to submit corrections and modifications 
+to the Software for the benefit of other users.
+
+It is not allowed to reuse,  modify, or redistribute the Software for 
+commercial use in any way, or for a user�s educational materials such as books 
+or blog articles without prior permission from the copyright holder. 
+
+The above copyright notice and this permission notice need to be included 
+in all copies or substantial portions of the software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS OR APRESS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+

README.md

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+#Apress Source Code
+
+This repository accompanies [*Troubleshooting Oracle Performance*](http://www.apress.com/9781590599174) by Christian Antognini (Apress, 2008).
+
+![Cover image](9781590599174.jpg)
+
+Download the files as a zip using the green button, or clone the repository to your machine using Git.
+
+##Releases
+
+Release v1.0 corresponds to the code in the published book, without corrections or updates.
+
+##Contributions
+
+See the file Contributing.md for more information on how you can contribute to this repository.

Scripts20100624/changelog.txt

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+2008-08-21
+
+- Initial release
+
+2009-03-08
+
+- connect.sql                                 Added DBM11107 and DBA11107
+- chapter02\bind_variables.sql                Fixed typo in comment
+- chapter02\sharable_cursors.sql              Added note about sharable_cursors_9i.sql + Fixed comment
+- chapter02\sharable_cursors_9i.sql           New file
+- chapter03\map_session_to_tracefile.sql      As of 11g the function LOWER must not be applied to the instance name 
+- chapter04\col_usage.sql                     New file
+- chapter04\comparing_object_statistics.sql   Fixed timing issue after sleep + ORA-00001
+- chapter05\bug5015557.sql                    Fixed hints + Added note about supported database releases
+- chapter05\dynamic_sampling_levels.sql       Fixed typo in header
+- chapter05\optimizer_secure_view_merging.sql Added service to CONNECT statements + Changed notes in header
+- chapter06\explain_plan.sql                  Fixed wrong CTAS in "Setup test environment"
+- chapter07\baseline_autoevolution.sql        New file
+- chapter07\all_rows.sql                      Added query to show SQL profile in 11g
+- chapter08\ParsingTest1.cs                   New file
+- chapter08\ParsingTest2.cs                   New file
+- chapter09\hash_cluster.sql                  New file
+- chapter10\merge_join.sql                    Added hint gather_plan_statistics to the last three queries
+- chapter11\ArrayInterface.cs                 New file
+- chapter11\RowPrefetching.cs                 New file
+- databases\DBA11107                          New directory containing the files to create the database DBA11107
+- databases\DBM11107                          New directory containing the files to create the database DBM11107
+
+2009-05-29
+
+- chapter07\object_stats.sql                  New file
+- chapter07\outline_with_ffs.sql              New file
+- chapter07\sqltext_to_signature.sql          New file
+
+2009-06-10
+
+- chapter09\fbi.sql                           To avoid index joins set _index_join_enabled to FALSE
+- chapter12\wrong_datatype.sql                To generate data use "to_date(...)" instead of "sysdate"
+
+2010-06-24
+
+- connect.sql                                 Added DBM10205, DBA10205, DBM11201 and DBA11201
+- chapter02\bind_variables.sql                Because of 11g modified/added queries against V$SQL_SHARED_CURSOR
+- chapter02\sharable_cursors.sql              Added SET SERVEROUTPUT OFF in the initialization part
+- chapter03\dbms_hprof.sql                    New file
+- chapter03\sql_trace_trigger.sql             New file
+- chapter06\display_awr.sql                   Improved query that displays AWR content
+- chapter06\execution_plans.sql               Added example for UNION ALL (RECURSIVE WITH)
+- chapter07\baseline_evolution_delete.sql     New file
+- chapter07\baseline_upgrade_11g.sql          After import added update to set the owner of the SQL tuning set
+- chapter07\opt_estimate.sql                  Uncommented 11g query
+- chapter07\outline_with_hj.sql               Script compatible with 10g/11g (set "_hash_join_enabled")
+- chapter07\tune_last_statement.sql           Added SET SERVEROUTPUT OFF in the initialization part
+- chapter08\client-side_caching.sql           New file
+- chapter09\conditions.sql                    Added queries containing NOT IN condition
+- chapter09\hash_cluster.sql                  Changed comment related to IN operator because of 11.2 improvement
+- chapter10\hash_join.sql                     Fixed typo in description
+- chapter10\join_elimination.sql              Fixed typo in description
+- chapter10\join_elimination2.sql             New file
+- chapter10\pwj.sql                           Disabled join-filter pruning
+- chapter10\subquery_unnesting.sql            Cover many more cases
+- chapter11\ArrayInterface.java               Added check for the return value of the executeBatch method
+- chapter11\ArrayInterfacePerf.java           Fixed number of iterations in main method
+- chapter11\atomic_refresh.sql                Changed CTAS to avoid ORA-30009
+- chapter11\dpi_performance.sql               Changed CTAS to avoid ORA-30009
+- chapter11\px_auto_dop.sql                   New file
+- chapter11\px_ddl.sql                        Changed the part displaying the parallel DDL status
+- chapter11\px_dml.sql                        Changed the part displaying the parallel DML status
+- chapter11\px_query.sql                      Changed the part displaying the parallel query status
+- chapter11\result_cache_plsql.sql            Added comment about invalidation in 11.2
+- chapter12\data_compression.sql              Changed CTAS to avoid ORA-30009
+- databases\DBA10205                          New directory containing the files to create the database DBA10205
+- databases\DBM10205                          New directory containing the files to create the database DBM10205
+- databases\DBA11201                          New directory containing the files to create the database DBA11201
+- databases\DBM11201                          New directory containing the files to create the database DBM11201

Scripts20100624/chapter02/bind_variables.sql

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+SET ECHO OFF
+REM ***************************************************************************
+REM ******************* Troubleshooting Oracle Performance ********************
+REM ************************ http://top.antognini.ch **************************
+REM ***************************************************************************
+REM
+REM File name...: bind_variables.sql
+REM Author......: Christian Antognini
+REM Date........: August 2008
+REM Description.: This script shows how and when bind variables lead to the
+REM               sharing of cursors.
+REM Notes.......: This script works as of 10g only. The 9i version is named
+REM               bind_variables_9i.sql.
+REM Parameters..: -
+REM
+REM You can send feedbacks or questions about this script to top@antognini.ch.
+REM
+REM Changes:
+REM DD.MM.YYYY Description
+REM ---------------------------------------------------------------------------
+REM 08.03.2009 Fixed typo in comment
+REM 24.06.2010 Because of 11g modified/added queries against V$SQL_SHARED_CURSOR
+REM ***************************************************************************
+
+SET TERMOUT ON
+SET FEEDBACK OFF
+SET VERIFY OFF
+SET SCAN ON
+
+@../connect.sql
+
+SET ECHO ON
+
+REM
+REM Setup test environment
+REM
+
+DROP TABLE t;
+
+CREATE TABLE t (n NUMBER, v VARCHAR2(4000));
+
+ALTER SYSTEM FLUSH SHARED_POOL;
+
+COLUMN sql_id NEW_VALUE sql_id
+
+PAUSE
+
+REM
+REM This script only works if:
+REM - the database character set is a single-byte encoding (e.g. WE8MSWIN1252) 
+REM - the database national character is a two-byte encoding (e.g. AL16UTF16)
+REM
+
+SELECT parameter, value 
+FROM nls_database_parameters 
+WHERE parameter IN ('NLS_CHARACTERSET','NLS_NCHAR_CHARACTERSET');
+
+PAUSE
+
+REM
+REM Execute three times the same SQL statement. Every time the value of the 
+REM bind variable is changed. Note that the SQL statement uses two bind 
+REM variables: a NUMBER and a VARCHAR2(32).
+REM
+
+VARIABLE n NUMBER
+VARIABLE v VARCHAR2(32)
+
+EXECUTE :n := 1; :v := 'Helicon';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+EXECUTE :n := 2; :v := 'Trantor';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+EXECUTE :n := 3; :v := 'Kalgan';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+PAUSE
+
+REM
+REM Display information about the associated child cursors
+REM
+
+SELECT sql_id, child_number, executions
+FROM v$sql
+WHERE sql_text = 'INSERT INTO t (n, v) VALUES (:n, :v)';
+
+PAUSE
+
+REM
+REM Re-execute the SQL statement two times. Compared to the previous 
+REM executions, the size of the VARCHAR2 bind variable is increased.
+REM
+
+VARIABLE v VARCHAR2(33)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+VARIABLE v VARCHAR2(128)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+PAUSE
+
+REM
+REM Display information about the associated child cursors
+REM
+
+SELECT sql_id, child_number, executions
+FROM v$sql
+WHERE sql_text = 'INSERT INTO t (n, v) VALUES (:n, :v)';
+
+PAUSE
+
+REM
+REM Re-execute the SQL statement two times. Compared to the previous 
+REM executions, the size of the VARCHAR2 bind variable is increased.
+REM
+
+VARIABLE v VARCHAR2(129)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+VARIABLE v VARCHAR2(2000)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+PAUSE
+
+REM
+REM Display information about the associated child cursors
+REM
+
+SELECT sql_id, child_number, executions
+FROM v$sql
+WHERE sql_text = 'INSERT INTO t (n, v) VALUES (:n, :v)';
+
+PAUSE
+
+REM
+REM Re-execute the SQL statement two times. Compared to the previous 
+REM executions, the size of the VARCHAR2 bind variable is increased.
+REM
+
+VARIABLE v VARCHAR2(2001)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+VARIABLE v VARCHAR2(4000)
+
+EXECUTE :n := 4; :v := 'Terminus';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+PAUSE
+
+REM
+REM Display information about the associated child cursors
+REM
+
+SELECT sql_id, child_number, executions
+FROM v$sql
+WHERE sql_text = 'INSERT INTO t (n, v) VALUES (:n, :v)';
+
+PAUSE
+
+REM
+REM Several child cursors were generated because of the increasing size of the
+REM VARCHAR2 bind variable. 
+REM
+
+COLUMN bind_mismatch FORMAT a13
+COLUMN incomplete_cursor FORMAT a17
+COLUMN bind_length_upgradeable FORMAT a23
+
+SELECT child_number, bind_mismatch, incomplete_cursor
+FROM v$sql_shared_cursor
+WHERE sql_id = '&sql_id';
+
+PAUSE
+
+REM The following query works as of 11.2 only
+
+SELECT child_number, bind_length_upgradeable
+FROM v$sql_shared_cursor
+WHERE sql_id = '&sql_id';
+
+PAUSE
+
+REM
+REM The metadata associated to the bind variables confirms that the database
+REM engine uses bind variable graduation to minimize the number of child 
+REM cursors.
+REM
+
+SELECT s.child_number, m.position, m.max_length, 
+       decode(m.datatype,1,'VARCHAR2',2,'NUMBER',m.datatype) aS datatype
+FROM v$sql s, v$sql_bind_metadata m
+WHERE s.sql_id = '&sql_id'
+AND s.child_address = m.address
+ORDER BY 1, 2;
+
+PAUSE
+
+REM
+REM Show that the boundaries for bind variable graduation (32, 128 and 2000)
+REM are bytes, not characters. For that purpose, the national character set
+REM is used.
+REM
+
+ALTER SYSTEM FLUSH SHARED_POOL;
+
+VARIABLE n NUMBER
+VARIABLE v NVARCHAR2(16)
+
+EXECUTE :n := 1; :v := 'Helicon';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+VARIABLE v NVARCHAR2(17)
+
+EXECUTE :n := 2; :v := 'Trantor';
+
+INSERT INTO t (n, v) VALUES (:n, :v);
+
+PAUSE
+
+SELECT sql_id, child_number, executions
+FROM v$sql
+WHERE sql_text = 'INSERT INTO t (n, v) VALUES (:n, :v)';
+
+PAUSE
+
+SELECT child_number, bind_mismatch, incomplete_cursor
+FROM v$sql_shared_cursor
+WHERE sql_id = '&sql_id';
+
+PAUSE
+
+REM The following query works as of 11.2 only
+
+SELECT child_number, bind_length_upgradeable
+FROM v$sql_shared_cursor
+WHERE sql_id = '&sql_id';
+
+PAUSE
+
+SELECT s.child_number, m.position, m.max_length, 
+       decode(m.datatype,1,'VARCHAR2',2,'NUMBER',m.datatype) aS datatype
+FROM v$sql s, v$sql_bind_metadata m
+WHERE s.sql_id = '&sql_id'
+AND s.child_address = m.address
+ORDER BY 1, 2;
+
+REM
+REM Cleanup
+REM
+
+UNDEFINE sql_id
+
+DROP TABLE t;
+PURGE TABLE t;