Oracle Performance Tuning

Similar Questions

• ORACLE PERFORMANCE TUNING TRAINING

  Hello world
  
  Can someone guide me how to learn optimization performance with examples, because when I followed the oracle doc it is little bit difficult for me to understand.
  
  
  Kind regards
  
  Vikas Kohli
  
  Published by: Vikas Kohli on August 30, 2011 15:40

  Vikas,

  To go through 2 day PT guide?

  http://docs.Oracle.com/CD/E11882_01/server.112/e10822/TOC.htm

  It is a good starting point if you know DB concepts very well. I also suggest reading the Concepts guide.
  http://docs.Oracle.com/CD/E11882_01/server.112/e25789/TOC.htm

• How to suggest a new symbol of certification: (as OCP *), which includes certified more than professional oracle performance and tuning?

  Hello

  There are several versions Oracle has removed the requirement of performance and tuning in what concerns OCP.

  You can get a separate ECO - Oracle Certified Expert for the performance and tuning.

  However, databases there include performance and tuning in the basic DBA certification.

  I understand there is an OCP (for DBA) and a separate OCÉ (performance and tuning),

  but could it be considered as an additional symbol combining the OCP and OCE (such as OCP * or OCPE or OCP2).

  We could always get and OCP for DBA and a separate ECA for the performance and tuning.

  If there was an an additional symbol, then maybe selftest software would also create reviews of preparation for the performance and tuning.

  Perhaps more people write books on their performance and tuning of certification.

  Maybe Oracle would provide Web seminar Exam Prep for the performance and tuning.

  Thank you Roger

  
  

  If there was an an additional symbol, then maybe selftest software would also create reviews of preparation for the performance and tuning.

  Perhaps more people write books on their performance and tuning of certification.

  That hangs high hopes on a couple of letters.  The problem, however, is not perception, but the economy. Traditional publishers must sell a lot of books to make return on investment in the costs of creating a new. Until they beat X-thousand books, they are in the red. STS and transcend do not have publication costs, but they still have to pay someone (probably a very expensive one) to go through the mind-numbing task of creating a bunch of questions / answers that are enough like the real exam to be useful, but different enough to not be do not cheat. They should sell enough copies of the review of the practice of paying for that person, and then more overhead before making a profit.

  The main reason that I was able to create guides to study at the best prices is because they are printed on demand.  I don't have to recover the costs of printing a large number of copies in the hope they will sell. In addition, as I do all of the writing to editing to marketing of myself - it has no salaries to pay someone else. Despite this - I could easily do more initial money by running Oracle contract/work councils for the same number of hours that I put in my books and practice tests. I was called to joke with my wife I could do more by night shifts working underground, asking people if they want fries with that.

  The problem with an author or an editor of creating a book especially for an Oracle performance certification (say 1Z0-064 or 1Z0-117), is that there is so much work involved in this than the creation of a book of generic performance Oracle or Oracle SQL Tuning book, but the very act of this direct to the test severely limits the people who can buy it. Those who study for 1Z0 - 064 could well but a generic performance Oracle 12 c book.  However, people in the market for a book of performance 12 c but * not * intended to take certification 064 are not likely to buy this book even though she 1Z0 - 064 on the lid.

  There are not many hug of people with the knowledge and the ability to create these materials. This relatively small pool, it is there not much with the desire to do. This further reduced pool, there not much time for her - or at least of time they are willing to take more lucrative projects requiring their skills.

• can I use "Oracle Database 12 c: performance management and Tuning" training for the certification "Oracle Database 11g: Performance Tuning 1Z0-054 '"»

  I took "Oracle Database 12 c: new performance management and Tuning" the oracle University training. Now I would like to get certified on "Oracle Database 11g: Performance Tuning 1Z0-054 ' exam. Is this possible?

  I guess you ask if you can use the course 12 c as long as the condition of course for the review of 11g.  Over 12 c is not listed as one of the options for the 11 g certification and course requirements are normally specific version - at least with DBA certifications.  If you are already an Oracle OCP DBA, of course, there is no requirement of course for the review of performance tuning.  From what I know the training requirements for other certifications, I do not that you will be able to use it. However, Brandye will provide a definitive answer to whether the course 12 c would be acceptable for 11g certification.

  That said, I'm with John - 12 c review is about a community of 85 to 90% in the review of the 11g and is currently about 20% of the price while it is in beta.  What is the point of trying to cross the releases?

• 1Z0-054: Oracle Database 11g Performance Tuning Expert

  I intend to give the exam 1z0-054 for the certification, "Oracle Database 11g Performance Tuning Expert".
  
  The path to Certification indicates that, if you are 'OCP DBA 11 g' then you can directly take this article and there is no requirement for training instructor. Therefore, I decided to prepare my own. Can someone guide me on study material and landfills?
  
  Kind regards
  
  Ahmer Mansoor

  Therefore, I decided to prepare my own. Can someone guide me on study material and landfills?

  First of all, the word "shock" has a precise meaning. It is short for "landfills of brain", which are illegal and can cost you this certification and all others you have taken.

  http://blogs.Oracle.com/certification/entry/0477

  Second - there is currently no study guide or a specific book to this certification at the moment. I write the study guides and this one is actually next on my list when I finished the current book to * 1Z0-117: Oracle Database 11 g Release 2: SQL Tuning *. I have a guide for 1Z0 - 054 before sometime in may more likely. That said, I have a few links for legal study on the companion Web site material for my series of guide to the subjects for this exam. It also has links to the Oracle documentation that contains the information you need. Once I have started writing the book review, links will develop quickly because I research for her themes and links to the documentation could extend as well.

  http://www.oraclecertificationprep.com/Apex/f?p=OCPSG:EXAM_DETAILS:0:no:P2_EXAM:1Z0 - 054

• Oracle Application Performance Tuning

  Hi all
  Please forgive me if I'm asking this in the wrong section.
  
  I'm an engineer s/w with 2 years exp. I worked as a tuning performance for Oracle EBS resource in my company. Jobs in question especially SQL tuning and treating indices etc. At the moment I took interest in s/n things, and I finished my TRAY in Oracle 10 g. Now, my company gives me the opportunity to move to a team of DBA of the Application and I'm totally confused about this.
  
  Becoming a DBA Apps means that the effort that I put in the certification in 10g will be of no use. There are other Apps DBA certification documents. I should stay put in performance tuning & wait for a chance to base DBA or I will accept the opportunity to Apps DBA.
  
  Also, did my exp. in SQL tuning performance hold any value as such with exposure to activities of s/n?
  
  Please guide me in this matter I am very confused right now.
  
  Kind regards
  Lucette

  Lucette wrote:
  Hello bigdelboy, thank you very much for your answer.

  Yes, I meant by oracle Apps DBA Oracle EBS.

  1Z0-046 clearing, is an option. However, my question is will delete both reviews the Admin I and Admin II being of any help, bypassing the expericnce practice? The EBS DBA work involves support and patching, cloning and installation of the new node etc.

  Also, is my performance tuning experience will help me somehow on the way forward as a DBA / EBS DBA?

  Thank you for your valuable time.

  Kind regards
  Lucette Sarath

  The way I read it is that.

  People notice that you are able to understand and SQL performance. And you must have some knowledge of Oracle EBS. And in fact, you also have a DBA OCA.

  So, there are 98% + chance you can be transformed into a good Oracle Apps DBA (and the core s/n). If I was in their position I want you on my team. It's the way we used to bring on DBA in the old days before approval, and he still has a lot of merit. OK you can only do tasks limited at first... but the number of taks you can do will increase substantially in recent months.

  I imagine that the Oracle Apps DBA will be pleased to have a person on board who can tune SQL which sometimes can sometimes seem more like an art than a science of performance. The application of patches, etc. can be taught in small doses. If they are a good team, they're not trying to give you all at once, they'll get to learn one procedure at a time.

  And remember, if in doubt ask. and if you do not understand ask again. And be safe and not sorry on actions that could be serious.

  .................

  If your fear on liinux: recipes of Linux for Oracle DBA (Apress) might be a good book to read but can be expensive in India
  Same: (Oracle Applications Dba field Guide) can agree, and the same (Rman recipes for Oracle Database 11 g A problem-solution approach) can have some value if you need to get fast speed in these areas.
  They are not perfect, but they sometimes have to consolidate the information carefully; However only buy if you think they are pretty cheap. You can buy them well and feel disappointed (these all is found by Apress which have produced a number of good books... they also published some waste as well)

  And review the dba examples 2 days as well and install examples n OTN linux so... they are free from books I mentioned.

  Rgds - bigdelboy.

• Dates for "Oracle Database 11g: Performance Tuning" exam

  Hello!
  
  Today Oracle posted the info on the new database Oracle 11 g Performance Tuning review required for new certification expertise:
  
  http://education.Oracle.com/pls/web_prod-PLQ-dad/db_pages.GetPage?page_id=41 & p_exam_id = 1Z0_054 #2
  
  It is said that pre-registration for the beta version review starts today, however, it does not say when the phase beta begins and ends. Anyone know?
  
  Thank you
  Marcus

  March 31, 2009 is the current provisional end date for the exam in beta 1Z1-054. This date is subject to change.

  Kind regards
  Brandye Barrington
  Certification Forum Moderator
  Manager certification program

• 1Z0-024 1Z0-054 vs Performance Tuning

  Hello

  obiously, they are tests for very different versions (8i vs 11g), but if you take that into consideration, I think they are very similar... But in Oracle 8i you had to pass 5 exams (Yes FIVE!) If you want to get your OCP. Today, you get 11G OCP with 3 tests... and if you pass 1Z0-054 you have one cerfitication others...

  Is this true?

  Are different so the two reviews?, it seems that they are very similar (all similar which can be oracle 8i and oracle 11g)

  Anyone who has had 1z0-024 (there are almost 13 years) took 1z0-054?

  Concerning

  Is this true?

  I guess that what you are asking to be true is that the 11g OCP requires three exams (TRUE) and passing the 1Z0 - 054 you grant OCÉ certification in addition to the 11 g OCP (also TRUE).  Theoretically, you could also win the 11g tuning certification without an OCP, but there're so much, we need practical training that must also be met.

  Are different so the two reviews?, it seems that they are very similar (all similar which can be oracle 8i and oracle 11g)

  Well, I don't have a handy list of topics for 1Z0 - 024, so I'll work from subjects for 1Z0 - 054 and extrapolate. First of all, I will list some of the topics in 054 which are features that did not exist in 8i:

  Automatic maintenance AWR, ADDM, tasks, reports of ASH, database Resource manager, planner of the Oracle, SQL tuning automatically, planning Plan SQL, SQL Performance Analyzer, Database Replay, Automatic Shared Memory Management, automatic memory management, space management auto Segment, Segment retractable, Automatic Storage Management, Statspack.

  Please note that the list above is perhaps not complete.  I might have missed some.  However, I think I can answer your question with confidence, saying: "Yes - the two reviews are very different."

• Will there be any tools avialable to the on query performance tuning

  Hello
  
  How to tune a database query?
  Suppose that there are basic query "select * from emp where empid = '1101' ';"
  
  Y at - it all avilabale tools to suggest performance Tuning on a query?
  
  How can I resolve this application, and what is the best approach on this?
  
  Please share your ideas and thanks.

  Oracle provides tools such as SQL Trace and TKPROF. For the information on a SQL query.

  But basically, you should know how oracle works. You must be aware of the different access plans and know why they are being used.

  You need to know when to use an index and when not to use a.

  There are many more. Best thing for you would be to start reading the document.

• Foglight performance tuning - Cache Code JVM

  Just curious about this setting. Currently, our new FMS are amazing. But I noticed this option in the field guide. No indication on that? The docs a bit thin. When I use it? What is the default if I don't specify? How to monitor the need to increase this?

  Performance Tuning field Guide

  To optimize the execution of code in larger environments, you can increase the size of the

  JVM code cache.

  To increase the size of the JVM code cache:

  1 open /config/foglight.config.

  2. change the line foglight.vm.option0 as follows:

  Foglight.VM.option0 = '-XX:ReservedCodeCacheSize = 128 m "

  3. restart the management server.

  The default setting is different based on the platform of the JVM.

  It is default to 1024 m on 64-bit systems or 32 m on most systems except Solaris where it could be 48 m.

  It sets the size used by the cache code during compilation JIT compiler. If this cache is small you will receive errors like this in the log file

  Java HotSpot(TM) Client VM warning: CodeCache is full. Compiler has been disabled. Java HotSpot(TM) Client VM warning: Try increasing the code cache size using -XXReservedCodeCacheSize=

  And it allows to disable the JIT compiler, which will result in reduced performance because all dynamic logic as rules and other groovy scripts will no longer be dealt with by the JIT.

  The default settings will work in most cases, but a big FMS with many objects and rules may require a greater reserve of cache to keep the happy JIT compiler.

  Stefan

• Oracle performance management system

  Hi all

  Can someone help me on the implementation, the scope and assumptions about the Oracle performance management system?

  Hello

  If you want to learn the whole thing... go to this URL for R12.

  http://docs.Oracle.com/CD/B34956_01/current/HTML/docset.ht..findml

  Human resources, search for pl

  "Oracle HRMS effective Sourcing, deployment, and Talent Management Guide.

  with doc not. B31620-02.

  You can go through the talent management (which is up to 11i Performance management system).

  Is it to 11i... Click on the following link.

  http://docs.Oracle.com/CD/B25284_01/current/HTML/docset.html

  The study guide thoroughly and then ask specific questions.

  Kind regards
  Siva

• Experience Performance Tuning Oracle professional

  Hi people,
  
  has followed the performance oracle tuning professional experience can be used to replace the certificate of apprenticeship or training in the OCP 9i - DBA?
  
  concerning
  Sunil

  sunilkrishna wrote:
  Hi people,

  has followed the performance oracle tuning professional experience can be used to replace the certificate of apprenticeship or training in the OCP 9i - DBA?

  concerning
  Sunil

  No, if you want proof of the OCP DBA, you will need classroom training. Tip: WDPFund, it may be cheaper. Or do you have a 11g s/n of class performance... you can learn something new.

• Oracle Database 11 g: performance tuning

  I would like to know, if this certification Oracle Database 11g: performance optimization is only for those who is employed by a specialist of the Oracle partner, or anyone who has spend the exame can have this certification
  
  Best regards

  Hello

  For what is the CA Certified Specialist certification, who earn this certification? the company or the employee?

  Please see these links.

  CA launches new levels of partner Oracle, "OPN" specialized
  http://blogs.Oracle.com/certification/2009/12/0127.html

  OPN certified specialist railways
  http://education.Oracle.com/pls/web_prod-PLQ-dad/db_pages.GetPage?page_id=342

  If I work in a company that is a member in the OPN, business certification, not me?

  In my view, that deserves both. Here are the links mentioned above:

  The Oracle Certification candidates who provide their OPN company identification number when you register for and successfully select Oracle Certification exams - in addition to winning the basic certification - also handed the Oracle Partner Network Certified Specialist designation for this area also.

  And I need to be an OCP 11 g before I can earn this certification?

  Is this correct?

  OK, you should have a prior certification 'Oracle 11 g DBA OCP' before obtaining this certification.

  Kind regards
  Hussein

• Poor Oracle Performance consistency running concurrent queries

  We have 600 million records in the cache must be retrieved on queries (filter or Multi Extractor, we tried both), but we are faced with poor performance when we increase concurrency, we use 5 son of job by node Manager representing a total of 300 sons, we are not able to get a rate higher than 400 records/s (that is, each node consistency to recover 6 records/s) It would take too long (nearly 20 days) to 600 M of process records. This means that consistent performance are poor until the database.

  The improvements that we tried:

  We have created the index (index simple and compound), implemented from POF, tunned shuts down the JVM to reduce the GC, configured network communication (doesn't any sense cause we run everything on the same machine, but we tried), increased coherence nets, implemented best practices and after all, we tried to run on Exalogic , and after all, we had the same problem.

  The material on our tests, we used:

  -Dell R910 with 1 TB of Ram and 80 processors;

  -Oracle Exalogic X 3.

  Each node consistency is using 16 GB of Ram, and we use a distributed Cache.

  Before dropping out of coherence I would like to know if there is something more, we can try.

  We opened the SR and after many tests, that we abandoned consistency, we changed the technology, and now the Solution works well. We understood that the consistency is just for the cache and not for intensive query.

• Performance tuning for Unix hosted components

  Hello

  I have Foundation, Planning, APS, EAS on Unix - Solaris environment. Do I need to increase the size of the JAVA heap for these components? We do this on windows, but I don't remember done previously for OEL.  It is meaningless for me to increase java heap xms and xmx values of size of 128 to 4096.

  version of hyp: 11.1.2.4

  Please advice

  Thank you

  Anjum

  Allow you the JVM, whether windows or * nix platforms, although saying that according to the load it may not need passing in 11.1.2.4 as the xmx will be 4096

  It is interesting to go through the tuning guide- https://blogs.oracle.com/pa/resource/Oracle_EPM_11_1_2_3_Tuning_Guide_v2.pdf

  Even if it's for 11.1.2.3 it is still topical for most in 11.1.2.4

  See you soon

  John