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Interesting case of the restriction of global hints | Dion Cho - Oracle Performance Storyteller
https://dioncho.wordpress.com/2010/12/17/interesting-case-of-the-restriction-of-global-hints
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Interesting case of the restriction of global hints. One of my colleagues sent following test case, of which he couldn’t control the join order with hints. Create objects – table t1, t2 and t3. SQL create table t1(c1 number, c2 number); Table created. SQL create table t2(c1 number, c2 number); Table created. SQL create table t3(c1 number, c2 number); Table created. Now Let’s set the join order as T1- T2- T3. Written by Dion Cho.
_gby_hash_aggregation_enabled bug | Dion Cho - Oracle Performance Storyteller
https://dioncho.wordpress.com/2010/07/06/_gby_hash_aggregation_enabled-bug
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Gby hash aggregation enabled bug. One of the customers complained that Oracle refuses to use the HASH GROUP BY operation under any circumstances. It’s 10gR2(10.2.0.1) database. TPACK@ukja1021 select * from v$version where rownum = 1; BANNER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod. One thing to note is that you might see this bug only when you ...
Interpreting Parallel MERGE Statement | Dion Cho - Oracle Performance Storyteller
https://dioncho.wordpress.com/2010/12/10/interpreting-parallel-merge-statement
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Interpreting Parallel MERGE Statement. This post is inspired by one of my colleagues, who had small difficulty while interpreting parallel MERGE execution plan. This is the step-by-step explanation I gave him. Would this MERGE statement run in parallel? The answer is NO. As you notice from the operation #2, the MERGE part itself runs in serial. It is SELECT part that runs in parallel. The reason would be parallel dml not enabled.
TPack | Dion Cho - Oracle Performance Storyteller
https://dioncho.wordpress.com/tpack
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Is my personal library which I use for analyzing Oracle peformance problems. You can get more informations on TPack site. Written by Dion Cho. September 16, 2010 at 1:52 am. Subscribe to comments with RSS. 8230;] TPack‘s Wait Detail Report gives more detailed information on the deadlocked library cache pin contention. […]. Making self deadlock on the library cache pin « Dion Cho – Oracle Performance Storyteller. End to end tracing.
Rapid PGA size increase | Dion Cho - Oracle Performance Storyteller
https://dioncho.wordpress.com/2010/06/14/rapid-pga-size-increase
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Rapid PGA size increase. A couple of days ago, one of our customers experienced a rapid PGA increase and the system got rebounced by PMON. We suggested dumping the PGA heap while the problem reoccurs. But the problem is that the PGA increase is too rapid(upto 3.6G in less than 2 min), so it is a bit hard to get the PGA dump manually. Fortunately, in situation like this, Oracle provides a way of getting automatic PGA heap dump.
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Dion Cho - Oracle Performance Storyteller: 並列MERGE文章の実行計画の解析
http://dioncho.blogspot.com/2010/12/merge.html
Dion Cho - Oracle Performance Storyteller. Sunday, December 12, 2010. SQL create table t1. 4 level as c1,. 5 level as c2,. 6 rpad('x',100) as c3. 9 connect by level. SQL create table t2. 4 level as c1,. 5 level as c2,. 6 rpad('x', 100) as c3. 9 connect by level. SQL explain plan for. 2 merge /* parallel */ into t1. 3 using (select c1, c2 from t2) t2. 4 on (t1.c1 = t2.c1). 5 when matched then. 6 update set t1.c2 = t1.c2. 7 when not matched then. 8 insert(c1, c2) values(t2.c1, t2.c2). Id Operation Name Rows.
Jaffar's (Mr RAC) Oracle blog: Errata
http://jaffardba.blogspot.com/p/errata.html
Jaffar's (Mr RAC) Oracle blog. Whatever topic has been discussed on this blog is my own finding and views, not necessary match with others. I strongly recommend you to do a test before you implement the piece of advice given at my blog. Alter system set filesystemio options= async. The async is actually asynch. Http:/ download.oracle.com/docs/cd/B28359 01/server.111/b28320/initparams083.htm. SYSTEM @ora11gr2> alter system set filesystemio options=async scope=spfile;. ERROR at line 1:. I think Oracle actu...
Jaffar's (Mr RAC) Oracle blog: July 2015
http://jaffardba.blogspot.com/2015_07_01_archive.html
Jaffar's (Mr RAC) Oracle blog. Whatever topic has been discussed on this blog is my own finding and views, not necessary match with others. I strongly recommend you to do a test before you implement the piece of advice given at my blog. Oracle Exadata Database Machine Implementation Essentials - Exam cleared. Thank you my dears and nears. Oracle Exadata Expert's Handbook - is out now. I am happy to share a good news with the Oracle community today. Our latest book ' Oracle Exadata Expert's Handbook.
Jaffar's (Mr RAC) Oracle blog: Oracle 11204 Clusterware upgrade - ASM glitch
http://jaffardba.blogspot.com/2014/08/oracle-11204-clusterware-upgrade-asm.html
Jaffar's (Mr RAC) Oracle blog. Whatever topic has been discussed on this blog is my own finding and views, not necessary match with others. I strongly recommend you to do a test before you implement the piece of advice given at my blog. Oracle 11204 Clusterware upgrade - ASM glitch. CRS-2672: Attempting to start 'ora.asm' on 'node01'. CRS-5017: The resource action "ora.asm start" encountered the following error:. ORA-48108: invalid value given for the diagnostic dest init.ora parameter. When tried to sta...
Jaffar's (Mr RAC) Oracle blog: May 2014
http://jaffardba.blogspot.com/2014_05_01_archive.html
Jaffar's (Mr RAC) Oracle blog. Whatever topic has been discussed on this blog is my own finding and views, not necessary match with others. I strongly recommend you to do a test before you implement the piece of advice given at my blog. Middle East and North Africa (MENA) 2014 OTN Tour - Tunis/Riyadh/Jeddah/Dubai. First ever MENA OTN Tour is scheduled From 26-May to 1-June 2014 in Tunis/Saudi Arabia/Dubai major cities. 2 Continents, 3 Countries, 5 Cities:50 Action-Packed Oracle Sessions. OCP 8i,9i and 10g.
Jaffar's (Mr RAC) Oracle blog: January 2015
http://jaffardba.blogspot.com/2015_01_01_archive.html
Jaffar's (Mr RAC) Oracle blog. Whatever topic has been discussed on this blog is my own finding and views, not necessary match with others. I strongly recommend you to do a test before you implement the piece of advice given at my blog. Toad world's Oracle Pro for January 2015 - truly honored. Thank you Toad for honoring me with ' Toad World's Oracle Pro for January 2015. I am indeed truly touched for the honor. Http:/ www.toadworld.com/platforms/oracle/default.aspx? Subscribe to: Posts (Atom).
Oracle related stuff: Einführung in Oracle Troubleshooting (DEU)
http://oracle-randolf.blogspot.com/p/einfuhrung-in-oracle-troubleshooting.html
IT Consulting und Schulung (DEU). Einführung in Oracle Troubleshooting (DEU). Introduction To Oracle Troubleshooting (ENG). Advanced Oracle Troubleshooting (DEU). Advanced Oracle Troubleshooting (ENG). Parallel Execution Masterclass (DEU). Parallel Execution Masterclass (ENG). Kontakt (DEU) / Get In Touch (ENG). Den Kostenbasierten Oracle Optimizer Verstehen (DE. Understanding The Oracle Cost Based Optimizer (ENG. Einführung in Oracle Troubleshooting (DEU). Warum sollten Sie an diesem Workshop teilnehmen?
Oracle related stuff: Video Tutorial: XPLAN_ASH Active Session History - Part 6
http://oracle-randolf.blogspot.com/2015/06/video-tutorial-xplanash-active-session.html
IT Consulting und Schulung (DEU). Einführung in Oracle Troubleshooting (DEU). Introduction To Oracle Troubleshooting (ENG). Advanced Oracle Troubleshooting (DEU). Advanced Oracle Troubleshooting (ENG). Parallel Execution Masterclass (DEU). Parallel Execution Masterclass (ENG). Kontakt (DEU) / Get In Touch (ENG). Den Kostenbasierten Oracle Optimizer Verstehen (DE. Understanding The Oracle Cost Based Optimizer (ENG. Sunday, June 28, 2015. Video Tutorial: XPLAN ASH Active Session History - Part 6. Maintaini...
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BLUE LION GENERATION | Just another WordPress.com weblog
December 10, 2009. Aditya si bocah karet. 8212; dionchi @ 11:15 am. Selain lihai melipat tubuh, Aditya, siswa kelas satu sekolah dasar itu juga ahli menulis di atas telapak kaki yang dilipatnya. June 16, 2008. The Incredible Hulk …. Filed under: film favoritku. 8212; Tags: resensi film the incredible hulk. The incredible hulk photo gallery. Trailer the incredible hulk. 8212; dionchi @ 7:36 am. The Incredible Hulk gallery . Pencetak Gol Fantastis …. 8212; Tags: all about Nihat Kahveci. June 15, 2008.
Dion Cho - Oracle Performance Storyteller
Dion Cho - Oracle Performance Storyteller. Thursday, December 16, 2010. 表T1, T2, T3を作ります。 SQL create table t1(c1 number, c2 number);. SQL create table t2(c1 number, c2 number);. SQL create table t3(c1 number, c2 number);. グローバルヒントを使って、結合順序を T1- T2- T3. SQL explain plan for. 2 select * from. 5 /* leading(v.t1 v.t2 t3) */. 6 vc1 as v c1,. 7 vc2 as v c2,. 8 t3c2 as t3 c2. 14 t1, t2. 16 t1c1 = t2.c1) v,. 19 vc1 = t3.c1. Id Operation Name Rows Bytes Cost (%CPU) Time. 0 SELECT STATEMENT 1 65 7 (15) 00:00:01.
Dion Cho - Oracle Performance Storyteller | We are natural born scientists
Dion Cho – Oracle Performance Storyteller. We are natural born scientists. Interesting case of the restriction of global hints. One of my colleagues sent following test case, of which he couldn’t control the join order with hints. Create objects – table t1, t2 and t3. SQL create table t1(c1 number, c2 number); Table created. SQL create table t2(c1 number, c2 number); Table created. SQL create table t3(c1 number, c2 number); Table created. Now Let’s set the join order as T1- T2- T3. Written by Dion Cho.
Dion Christmas Galleries
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Zulma
Monday, March 23, 2009. With all the bright bold colors of the season, I am Paul Frank Handbags. To feel over stimulated. Which is why I am so drawn to this subtle shade of taupe from Jimmy Choo! It’s calm and neutral, and after my latest purchase- an electric blue Tod’s tote (my “Trend” bag of the season)- I. Is this the end of the High Street? Tips on Baby Constipation Treatment. Avril Lavigne Perfumes Name Unveiled {Celebrity F. Perlabella Anti-Aging Skin Care Line. Bin Laden attacks Arab leaders.
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Blog de dioncline - Céline Dion,DIVA QUEBECOISE - Skyrock.com
Mot de passe :. J'ai oublié mon mot de passe. Céline Dion,DIVA QUEBECOISE. Une histoire de rêve. Une voix en or. Une femme de coeur. Une femme de conviction. Mise à jour :. Abonne-toi à mon blog! Céline Dion et Jean-Jacques Goldman. A Jean-Jacques : Sache que je n'ai jamais eu ni craintes ni doutes. ton coeur et tes musiques prolongent, encore une fois, notre déjà si belle aventure. Pour moi, Jean-Jacques Goldman est l'équivalent de Bruce Springsteen aux Etats-unis. La première rencontre entre Jean-Jacqu...
