tool to diagnose performance problems in the oracle database

Similar Questions

• Improving the performance of OLAP in Oracle Database 11

  Hi all

  First of all sorry for a very generic question, lately I been faced with some problems of performance during the generation cubes

  for example we had a problem of low SGA_memory, now we have referred questions to Doc-ID 1464064.1

  to cut short-we have a list of things to look for in advance for OLAP can improve performance?

  similar to the one mentioned in a blog post (improving the performance of OLAP in Oracle Database 10 g Release 1) which is for 10 g

  we ORDM DW, which has the dimension of TIME based with about 10 k records sometimes, that it takes about 20 minutes to build recently its not not building at all throwing error mentioned Doc-ID 1464064.1 I have a wip SR to even SR 3-9620792761

  Similarly, we produced Sun with approximately 9million records sometimes he finished in 4 hours sometimes it ends quite

  I have twice fallen & recreated workspace that helps a little but does not appear inconsistent.

  Pointers would be really useful

  Thank you

  Prateek

  You can update following anonymous pl/sql block and change in your

  specific information for the name of the cube and measure names. You

  can add more steps as you like following the same convention of xml.

  DECLARE

  CLOB xmlCLOB;

  tmp varchar2 (4000);

  BEGIN

  DBMS_LOB.CREATETEMPORARY (xmlCLOB, true);

  DBMS_LOB. Open (xmlCLOB, DBMS_LOB. LOB_READWRITE);

  tmp: ='

  ';

  DBMS_LOB. WriteAppend (xmlCLOB, length (tmp), tmp);

  dbms_cube.import_xml (xmlClob);

  DBMS_LOB. Close (xmlClob);

  END;

• Problem with the Oracle text markup

  Hello
  
  I have a problem with the Oracle text markup.
  
  I am looking for keywords in a text which is composed by a question and answer.
  Here is the structure of my text:
  & lt; div class = 'question' & gt;
  & lt; a & gt; the title of my question & lt; /a & gt;
  & lt; div class = "reply & gt;
  content of response
  & lt; / div & gt;
  & lt; / div & gt;
  
  It is possible to search those keywords in the question or answer only. For this, I use the stored procedure:
  
  {call CTX_DOC. MARKUP)
  index_name = >?
  textkey = >?
  text_Query = >?
  restab = >?
  query_id = >?
  startTag = >?
  (EndTag = >?)}
  
  _with these parameters: _
  
  index_name = < my index >
  textkey = < id for the search text >
  text_Query = < a query containing the keywords >
  restab = < a table SQL to store the marked text >
  query_id = < id >
  startTag = ' < span class =-"highlight\" >. "
  EndTag = "</span >.
  
  The markup should be done only in the place you want (question, answer, or both).
  The markup is good when I search a keyword throughout the text, in the question or answer only.
  * If I search two key words in the question or answer, the markup is bad *.
  
  _Example: __
  I am looking for the words "* Internet *" in question only.
  Here's the query passed to the stored procedure:
  + * text_query * = 'service & internet' INPATH (//div[@class = 'question'] / has) +.
  
  In the question, these words are well marked.
  In response, only the first word is marked.
  
  * Why the first keyword is also marked in the response while the query specifies a search in question only? *
  
  The same problem appears when I search for the same keywords in the response only.
  In this case, in the answer, these words are marked as well.
  In the issue, only the first word is marked.
  
  Thanks for your help
  
  Edited by: user11088931 Apr 21. 2009 06:17

  Try text_query = (service & internet) INPATH (//div/a)

  Single quotes in a query do nothing. I think that your request has been treated as

  Service & (internet INPATH (//div/a))

• PDF files in the Oracle database

  First all the Hi and thanks to all the gurus of this forum to provide non-stop services to solve problems at the global level.
  
  I'm using Oracle Database 11 g - R1 with Oracle Application Express 4.1.
  
  My clients (end-users) can visit to download PDFs in the database via a built-in Oracle Application Express application.
  
  All of a sudden ".dmp" size increased rapidly from 360 MB to 2.7 GB and everything that happened due to downloading of PDF files.
  
  I want to know it's alarming for the Oracle database? Because I'm in doubt, users have a lot of files to download, Services of Oracle database that will / Performance will be disturbed by the increase in the size of the database or Oracle database server could be crushed?
  
  
  Please confirm. Thanks in advance.
  
  Looks: Mohammed Uzair Awan

  Performance may be affected.
  Backup time would increase.
  Backup space (disk / tape) would increase the requirements.

  There should not be a 'crash' of the database
  As you run 11 GR 1 material, I assume that you do not run the Express edition.

  Hemant K Collette

• Area of private use in the Oracle database

  Hello

  one of my customers have very specific needs. In this case, it has its own "characters". It uses Latin characters and certain characters. Their data are mixture of these characters. Their own characters are not in Unicode format and we have specific policies.

  These specific characters will be in the private use area, but I don't know if and how the Oracle database support unicode private use area.

  Oracle database support unicode private use area?

  And what sorting, filtering data? What classification is applied?

  Does anyone have experience with characters in the private use area?

  Thank you

  Fabrice.

  Oracle supports Unicode PUA you can store codes of PUA in a database AL32UTF8 and you can treat strings containing characters without special considerations. PUA characters are classified into letters in the Oracle database.

  Oracle maps the characters (EUDC) user of various character sets defined multibyte (JA16SJIS, ZHS16GBK, ZHT16MSWIN950, KO16MSWIN949, etc.) to the characters of PUA. These characters are also used by the former Hong Kong HKSCS extension mapping. If supporting user-defined characters in PUA is not a problem for the customer, they can use the standard plane 0 (BMP) PUA [U + E000 to U + F8FF] in their purpose. However, to avoid conflicts with existing maps, they should put their characters in plane 15 PUA [U + F0000-U + FFFFD] or plane 16 PUA [U + 100000-U + 10FFFD]. The downside is that the planes 15 and 16 require four bytes per character in AL32UTF8 compared to three bytes for plane 0.

  The classification applied to the characters PUA is the same as that applied to the other characters in a given environment. The order of the characters PUA in the given classification, depends on the type of snack:

  • In BINARY classification, the comparison is obviously based on binary codes. The order depends on encoding (AL16UTF16 vs AL32UTF8), especially for aircraft 15 and 16 PUA plane.
  • In monolingual rankings (which are not well suited for Unicode characters anyway) PUA are generally ignored in the sorting (but does not) than the characters defined explicitly in the given classification. Compared only among themselves, they use the UTF-16 Binary order.
  • In multilingual characters rankings PUA are generally classified after all characters defined explicitly in the rankings, which are characters from scripts (Latin, Cyrillic, Greek, Georgian, Armenian) Europeans and, in some rankings, an East Asian script. Between them, they are classified according to AL16UTF16 (= UTF-16BE) binary collation.
  • In the UCA, the characters multilingual rankings PUA generally are classified into once all characters defined explicitly in the rankings, which are usually all defined Unicode characters. Between them, they are classified according to AL32UTF8 (= UTF - 8) binary collation. Note that the UCA rankings are new in the database Oracle 12 c.

  Thank you

  Sergiusz

• How to clean the Oracle database?

  Dear gurus and DBA. My company wants to give old computer at the local school. We have the Oracle database on this server. My boss want to make sure that the school not getting all the Oracle data. Some data bank is and must be a secret. The Bank's major customer and so exposed information, it means big problem for us. Ideas you might have appreicated. Thank you.

  >

  Hi Rajiv,

  Dear gurus and DBA. My company wants to give old computer at the local school.
  We have the Oracle database on this server. My boss want to make sure that the school
  not all Oracle data. Some data bank is and must be a secret.
  The Bank's major customer and so exposed information, it means big problem for us.
  Ideas you might have appreicated. Thank you.

  DBAN is your man - even not God could get information about a Dban disk ' ed - get it [url http://www.dban.org/] here.

  I have some work for a charity that sends computers in East Africa a few years ago.
  These PC came from banks, insurance companies, lawyers & law firms - a lot of
  potentially sensitive data. Much of the company to simply delete the
  files, which, as we all know is not really effective.

  The first thing we did with each machine was Dban them - no work allowed the
  any PC until it had a sticker of Dban top. Never had any problems.

  HTH,

  Paul...

  Published by: Paulie July 22, 2012 00:26

  Published by: Paulie July 22, 2012 00:27

• The upgrade of the Oracle Database 11g while maintaining the forms on 10g

  Hello
  I am relatively new to the oracle application servers and forms.
  
  In my view, it is possible to upgrade the database to 11g but let application servers and forms on 10g. I can't find it mentioned explicitly in documentation, but she seems to be involved.
  
  Someone at - it encountered problems with the database running on 11 g and leaving forms, application, the interfaces running on 10 g servers.
  
  Thank you
  Jim

  Salvation;

  Your question and answer is Yes,

  See the link below:
  http://www.Oracle.com/technetwork/middleware/IAS/downloads/as-certification-R2-101202-095871.html#BAJGCBEA

  Which is mention below notes:

  All editions of Oracle Database 11 g (11.1.0.6) or more are supported. Please refer to Metalink Note 740417.1 for more information on the Oracle Database 11 g 1 material Certification for Oracle Application Server 10 g (10.1.2.x), and Metalink Note 887365.1 for more information about the database Oracle 11 GR 2 Certification for Oracle Application Server 10 g (10.1.2.x).

  Respect of
  HELIOS

• How do I get the name of the web page in v$ session table in the Oracle database

  We have asp.net web application hosted on IIS (windows) and the connection to the Oracle (10g) database.
  
  
  When I query the table v$ session in the database as a Jr.DBA, I don't see the name of the program as "w3wp.exe.
  coming from the computer host IIS (web server).
  
  Now, it is difficult to diagnose as session in the database that refers to what web page in the web application.
  
  If I have 10 web pages open in my web application connecting to the Oracle database, now if I wanted to go
  session info, when I browse the v$ session all it shows me what "w3wp.exe.
  
  Now is there a way to get the name of the web page in the session of $ v.
  
  (maybe he needs a few changes to the code in the application web asp.net, change in the configuration of IIS web server as well).
  
  Let me know

  Dear johnpau2013,

  It's an interesting question. See the documentation below and see if they help you or not?

  DBMS_APPLICATION_INFO;

  http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14258/d_appinf.htm#CHEEFBBD
  http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14258/d_appinf.htm#i999290
  http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14258/d_appinf.htm#ARPLS003

  Hope that helps.

  Ogan

• Loading data to SQL server for the Oracle database

  I want to create a table in oracle db table in sql server. Table is huge that he has obtained the documents 97,456,789.
  I created the link (HS) db in the oracle database that points to the sql server. I choose this oracle db on the link table.
  
  Select * from 'dbo '. "T1@dblink;
  
  I shot below to create the table.
  create table t2 nologging parallel (degree = 3) as select * from 'dbo '. "T1@dblink;
  and its taking a long time... but its operation...
  
  is there any other method to do this and and fill the table in oracle db faster.
  
  Please notify. Thank you.

  vhiware wrote:
  create table t2 nologging parallel (degree = 3) as select * from 'dbo '. "T1@dblink;
  and its taking a long time... but its operation...

  I doubt that parallel processing will be used because it is unique to Oracle (using rowid varies in general) and not SQL-Server.

  is there any other method to do this and and fill the table in oracle db faster.

  Part of the performance overhead is to pull that data from SQL Server to Oracle in the whole of the liaison network between them. This can be accelerated by compressing the data first - and who then transfer them over the network.

  For example: using + bcp + to export the data in the SQL Server box to a CSV file, compress/zip file, scp/sftp file Oracle and then to unzip there. In parallel and direct treatment of load can now be done using SQL * Loader to load the CSV file into Oracle.

  If it is a basic Linux/Unix system, the process of decompression/unzip can be run in parallel with the SQL * process Loader by creating a pipe between the two – where the decompression process writes data uncompressed in the pipe and SQL * Loader reads and loads the data that is available through the pipe.

  Otherwise you are PQ own transformation. Assume that the data is date varies. You can create a procedure on Oracle that looks like this:
  {code}
  create or replace procedure as copyday (day) is
  Start
  Insert / * + append * / into local_tab select * from remote_tab@remotedb where col_day = day;
  -Add logging info, validation, etc.
  end;
  {code}

  You can now start 10 or more of these different days and run it in the background using DBMS_JOB.

• Convert flat file to XML document and store it in the Oracle database

  First of all:
  I have a flatfile and created an external table to read this file in Oracle
  Now, I want to create an XML document for each line and insert in the Oracle database, I think as XMLtype.
  Could you please give me some information/steps.
  
  Second:
  Are there performance issues, because every day, I need to check that the XML document stored in the database against the next file.
  Thank you.

  I won't tell it not in the same words that Marco used, but your solution is impassable and an invitation for bad things to happen.

  Wait miserable performance, and you will not be disappointed.

  The concept of total flexibility works up a code that you depend on has no idea what to do with what is playback.
  Will happen to enough short term and is roughly the equivalent of the absurdity of Java to be independent of the database.

  I would recommend you take the concept and consider, with your data volumes, something more likely to succeed.

• connection / disconnection of the oracle database

  Hello
  I looked upwards and downwards in the documentation of oracle for a good reason why we should not connect to the oracle database, delivery time of 4 or 5 Oracle sql disconnect, reconnect 4-5 sql statements and disconnect again(using sqlplus).
  What I currently have is an application that has this kind of behavior that would be as connect/disconnect to the database over 300 times in 25 minutes.
  I know that this is not scalable, but would like to show the programmer in the oracle documentation that is not a recommended bestpractes.
  Any help will be appreciated.

  What you can explain the developer that is whathappens when a connection is given and terminated, the concept of the PGA and server allocation and dealloction process. You can include more use of server resources when all that happens. Once this part is well to him, you can tell him that hisapplication this constant opening and closing of session, it don't let not the server works optimally as morethan optimize work of its apps, server would be busy giving him the connection later by removing its connetion.

  Just take a look at the documentation and found this guide, PT
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14211/design.htm#CJHFIHFC

  >
  Factors that may prevent a linear scaling include:

  Configuration, implementation and poor application design

  The application has the greatest impact on scalability. For example:

  The poor schema design can cause expensive SQL that do not evolve.

  Poor transaction design can cause problems of locking and serialization.

  Bad connection management can cause periods of poor response and reliable systems
  >

  Would that help?
  HTH
  Aman...

  Published by: Aman... April 26, 2009 15:29
  Adding link guide PT

• Database alert is not triggered when the Oracle database monitor by mistake.

  Hello

  Database alert is not triggered when the monitor of the Oracle database by mistake. If we test the alert manually alert works correctly. Could someone let me know the solution for this.

  This isn't a question of PC or operating system. You should post your questions in the forums of Oracle database.

• What is the name of the table that has the name of the custom in the Oracle database Section?

  What is the name of the table that has the name of the custom in the Oracle database Section?

  Thank you

  Nefertari

  The names of the custom Sections are stored in commonExtendedAttributeML, the extended attribute table.

• How to store images in the oracle database and get back on a jsff page in ADF?

  Mr President.

  How to store images in the oracle database and get back on a jsff page in ADF?

  I have students and employees in my database and want to store their pictures against their ID.

  How to do this?

  Concerning

  Tender,

  You can check the links that explain this below.

  https://tompeez.WordPress.com/2011/11/26/jdev11-1-2-1-0-handling-imagesfiles-in-ADF-part-2/

  Johny tips: ADF: display image files from database as a popup in Application Web ADF

  See you soon

  AJ

• Why use Oracle Grid in the oracle database

  Hi experts,

  In fact in my workplace, we use normal database (use not the grid). I want to know why we use the grid in the oracle database. all that the advantage of it.

  Reg,

  Thomas

  You might have a grid of database servers (access to the shared storage) or application servers.

  You can use the Grid control to monitor and manage multiple database / application servers.

  10g and 11g and 12 c facilities grid Infrastructure is installed to facilitate the DSO (is not part of the 10g GI) but a part of the 11 g and 12 c GI and Clustering.

  Then, depending on the context "grid" can refer to another product.

  Hemant K Collette