Error on Java class calling in the Oracle database

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• Java class to connect to Oracle Database Express Edition11g and URL

  Can I use Oracle SQL Developer to do or use it as the value of the URL for the host name?

  I'm just starting to learn Java and with it, learn how to use the Oracle Database Express Edition11g and with it the Oracle SQL Developer...

  At this point, I have the Express Edition is installed and the SQL Developer installed and were able to establish a connection and to run a query and get a result.

  I use Eclipse for JAVA.  I have a work of class that performs a query on a database/table in MySQL.

  So now I'm eager to make the same use as the database Oracle Database Express Edition11g engine.

  And this means that two different versions of JAVA that I need to get the right to be able to do.

  The first is the value of the url variable.

  I now like

  String url = "jdbc:oracle:thin:@localhost";

  then

  Class.forName ("oracle.jdbc.OracleDriver");

  and then

  Connection connection = DriverManager.getConnection (url);

  The thing I'm puzzled on is in the URL where I 'localhost' was supposed to be the term generic and not so much as the text, you should use.

  I see in Web sites like 3 connection to Oracle Database XE

  and decrease example 3-2 by specifying the URL of database using the XE Client Setup

  There I see

  JDBC:driver_type: [username/password] @[//]host_name[: port] [XE]]

  And just what is and what is not is explained here.  So what I ended up with was

  String url = "jdbc:oracle:thin:@localhost";

  So if it was just a text to rest for a name I wonder just such a value or name might really where.

  I noticed that view that an app called "Oracle JDeveloper" has been used to create the values.   I don't have such a thing, or at least I don't think I do.

  Do I need?

  I have Oracle SQL DEVELOPER, where I used the following to connect to the database of the XE.

  My choice for Oracle's SQL Developer Help

  Name of connection: Connection1

  User name: Rod

  Password: myOracle11

  Host name: localhost

  Port: 1521, which is the default value

  SID: xe

  Above so I have to host name set to localhost

  Can I use Oracle SQL Developer to do or use it as the value of the URL for the host name?

  1. I do nothing

  2. While wouldn't you say it

  3. no results from the earlier assignment.

  I asked "'can I use Oracle SQL Developer to do or use it as the value of the URL for the host name?" "

  I showed the choice that I used in SQL Developer to connect to the schema.  And I was wondering, now that I had done this case those are the values that I could use in the Java class that I wrote.  The web site in the first post of this thread showed connection but he was using JDeveloper and SQL Developer.

  So I was wondering if the connection that I made using SQL Developer would do the same trick, and if I could use the values I did there.

  I'm happy to announce that YES, The values used to connect using SQL Developer work exactly like JDeveloper.

  So, given that in SQL Developer for Hostname I chose the value "localhost" "Rod" Username and password "myOracle11".

  I did the following JAVA CLASS that worked:

  package VC_2_9;

  Java for COBOL - copyright 1999 Doke & Hardgrave programmer

  import java.sql. *;

  public class DataBaseDemoOracle

  {

  Public Shared Sub main (string args [])

  {

  String CUST_LAST_NAME;

  / * String url = "jdbc:mysql://localhost/visualcafe";                     */

  String url = "JDBC: thin: @localhost';"

  / * String sqlQuery = "SELECT Name, SSNo, address, telephone OF THE customer;    */

  String sqlQuery = "SELECT CUST_LAST_NAME FROM DEMO_CUSTOMERS";

  //                                               |||||||||||||||

  Try

  {

  Class.forName ("oracle.jdbc.OracleDriver");

  Connection connection = DriverManager.getConnection (url, "Rod","myOracle11" ");

  Statement statement = aConnection.createStatement ();

  ResultSet rs = aStatement.executeQuery (sqlQuery);

  Boolean more = rs.next ();

  (more)

  {

  CUST_LAST_NAME = rs.getString (1);

  /* */

  System.out.println ("name:" + CUST_LAST_NAME);

  more = rs.next ();

  }

  RS. Close();

  aStatement.close ();

  aConnection.close ();

  }

  catch (ClassNotFoundException e)

  {System.out.println ("Exception caught" + e) ;}}

  catch (SQLException e)

  {If (e! = null)}

  {System.out.println ("SQLException taking" + e);}

  e = e.getNextException ();

  } / / end of while loop

  } / / end of capture

  } / / main end

  } / / end DataBaseDemoOracle.java

• by using the DCDataRow class instead of the oracle.jbo.Row interface

  Hello
  
  The API documentation says that class oracle.adf.model.bean.DCDataRow extends oracle.jbo.server.ViewRowImpl and implements oracle.jbo.Row.
  
  -In the case of a reply in another forum thread, Re: best way to recover an attributeValue of links in a backing bean?:
  ""Btw.: you can cast DCDataRow, which is the super class for data models that do not work with oracle.jbo.Row, ".
  -Also in oct2010-otn-harvest - 183714.pdf it says:
  "As I mentioned earlier, the business can be anything, casting, in which case the line type for the type of business ADF oracle.jbo.Row component may not be a generic solution to use. In this case, the type of line to DCDataRow cast
  DCDataRow vRow = (DCDataRow) vDCIteratorBinding.getCurrentRow (); "
  
  This sample application uses the DCDataRow class instead of the oracle.jbo.Row interface
  at http://www.consideringred.com/files/oracle/2010/Thread1665841AttributeValuesApp-v0.03.zip

    public String getMyNameFromIterator()
    {
      BindingContainer vBindingContainer =
         BindingContext.getCurrent().getCurrentBindingsEntry();
      DCBindingContainer vDCBindingContainer = (DCBindingContainer)vBindingContainer;
      DCIteratorBinding vDCIteratorBinding =
         vDCBindingContainer.findIteratorBinding("findSomeMyRowsIterator");
      DCDataRow vDCDataRow = (DCDataRow)vDCIteratorBinding.getCurrentRow();
      return (String)vDCDataRow.getAttribute("myName");
    }

  question
  -(q1), which would be the more detailed explanation about when and why to make a cast of the class oracle.adf.model.bean.DCDataRow instead of the oracle.jbo.Row of the interface in managed bean code?
  
  Thank you very much
  Jan Vervecken

  Hello

  the answer to that is that I was wrong. DCDataRow is not the super class, but one of the classes of implementation. I'll fix the entrance of the harvest with the next update. Indeed line runs through implementations

  Frank

• How to find the name of the Oracle database server?

  People,

  Hello. I installed Oracle Database 11 g 2 OS Oracle Linux 5. The installed directory is/home/user/OracleDB_Home and/home/user/OracleDB_Base.

  Host name is "mylinux". Name of the database instance is PT853.

  I use "mylinux" as the name of the database server, it does not work. I use another way to do as below:

  Export ORACLE_HOME = / home/user/OracleDB_Home

  Can I use "mylinux ORACLE_HOME" as the name of the database server, it does not work either.

  
  My question is:

  How to find the name of the database server Oracle with Oracle Linux 5 OS?

  
  Thank you.

  You must learn the basic of database Oracle.

  Please don't regard it not same as SQL server in terms of configuration.

  You never specify the database server name in Oracle.

  You specify the host name in only two places, 1) Tnsnames.ora/JDBC/ODBC (or any client you want to connect) and listener.ora) 2.

  There was nothing called specify the name of the Oracle database from an oracle database server.

  Concerning

  Anurag.

• Question about the Oracle database resource management

  Good evening
  I have a question about Oracle database Resource Management (DRM) for Oracle Database 10 g. I had an incident which, in a development/UAT environment (different instances, same box, don't ask), a developer wrote a wrong SQL statement that consumed 99% of the CPU. Currently, there is no limit of resources on two cases of db, and the developers don't want limits. However, my manager wants a method to prevent something like this does not happen. If I use the Oracle database resources management, create a consumer group (called "DevEnv") at 40% CPU usage, what will happen if a user of DevEnv runs a bad SQL statement that normally consumes 90% CPU again? Anyone would take a different approach? Thank you.
  
  Sincerely,
  Sho Fukamachi

  782718 wrote:
  If users in the case of "db_uat" use 60% CPU would be users who belongs to DevEnv pending 'db_test' cannot be used more than 40% CPU, so their queries become slower at their end? I would like to know if this behavior works the same in an environment of multiple instances. Thank you.

  Yes, because the available processor would be 40%, they use more, while.

• 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.

• Target of hyperlink connects since the Outlook file in the Oracle database mail

  Greetings.
  Lack of permissions, I can't create text file on the UNIX server.
  This will not be changed.
  I saved the file in the Oracle 11 g database.
  
  I want to send e-mail to PL/SQL with attached file.
  No UNIX don't scripts at all.
  
  It's a big file.
  Thought has crossed my mind.
  
  Can I send e-mail to PL/SQL with a hyperlink that connects to the file that is stored in the Oracle database?
  The target of the link is a file stored in the Oracle database.
  
  Did anyone done this before?
  
  Let me know your ideas.
  
  Thank you.

  Freq Oracle wrote:

  I want to send e-mail to PL/SQL with attached file.
  No UNIX don't scripts at all.

  Can be done using UTL_SMTP or more recent UTL_MAIL.

  Attachments to emails are just that - the content of the file is attached to the body of the mail. Mail arrives at its destination, the mail reader recognizes the attachment and allows it to be saved to disk (or open/read).

  It's standard stuff... See MIME for more details on how to build a body of message with attachments.

  Can I send e-mail to PL/SQL with a hyperlink that connects to the file that is stored in the Oracle database?
  The target of the link is a file stored in the Oracle database.

  Yes. You need a web server that has been configured with Oracle "+ access +"-the default is using the Apache Oracle server which includes a module called mod_plsql. This module allows the web browser to use a URL that refers to a procedure from PL/SQL web enabled in a specific database schema - and pass parameters (as part of the URL query string) to the proceedings.

  You can also use Oracle EPG (Extended procedure gateway according to me, is what does the acronym). This provides a web server directly within the Oracle instance using Oracle XDB (integrated database of XML). It also has a module of type mod_plsql which provides that a web interface (via http) enabled PL/SQL procedures.

  This procedure can be a procedure "+ document download. Oracle provides a system procedure called WPG_DOCLOAD.download_file ()+ you can use inside this active web PL/SQL procedure. This will return the contents of the blob/clob as a 'file' in the web browser.

  For example, a download web-enabled simplistic procedure will look something like this:

  create or replace procedure downloadFile( fileName varchar2 ) is
          b       blob;
          mimeType varchar2(50);
  begin
          select
              file_content, mime_type  into b, mimeType
          from my_documents where file_name = fileName;
  
          OWA_UTIL.mime_header( mimeType, false );
          HTP.p('Content-Length: ' || DBMS_LOB.getlength(b));
          OWA_UTIL.http_header_close;
          WPG_DOCLOAD.download_file( b );
  end;
  

  The URL will look like this:

  http://my-webserver.my-domain.com:7777/pls/ora/scott.downloadfile?filename=somefile.doc
  

  where:
  Scott.DownloadFile = name of the PL/SQL procedure
  filename = somefile.doc = name values of the parameter to pass to the procedure

• 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

• 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

• 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

• Record great shape data in the Oracle database

  Hi all

  I have a question as to how we store a large xml for example more than 10000 bytes in the oracle database. I tried to use varchar, but the length is limited to only 4000 bytes. Could someone let me know how to achieve this.

  Basically what I'm doing is in adobe livecycle workflow I will get the user entered data in the form as formData (xml) variable and I want to keep the same for any future reference. I need to use the same data to fill the form again in the future.

  Thanks in advance.

  Shekhar,

  I had handy MySQL, so I did it using that and attached here is a sample. For Oracle, this is mission for you as well as recovery.

  -Wasil

• The Oracle database is free for individuals?

  Is the Oracle database free for private developers, just test the database, or what I personally contact them in order to pay them? Only, I went to the page of download of Oracle and downloaded 2 pcs. Installation of 1 GB, installed files database on my Windows 7 computer and then started using it.

  Have you paid attention to the license agreement you agreed before downloading software? Restrictions on use are clearly stated.

  Oracle Technology Network Developer for Oracle Database 11g Express Edition license terms

  The limits for 11g XE are also documented-

  Oracle & reg; Database Express Edition

  Oracle & reg; Database Express Edition

  HTH
  Srini

• How to start the oracle database server and its client in windows 8

  Hi all

  I am a new entry in this forum and I am a beginner with oracle database.

  I always used SQL Server as the database, and it was easy to use after installation.

  With management program configuration of SQL Server I could to start service SQL Server (SQLEXPRESS) and the database server start!

  With SQL Server management studio, I was able to launch the client application, then was to establish a connection to the server and everything worked great!

  Now, how to work with the oracle database?

  I installed the oracle server and client version 11g R2 in windows 8, but how do I start the database?... and how can I start the client application to query?

  best wishes in advance.

  PS: Sorry for my English.

  If you are on the same machine, the only service that you absolutely need to start is the database service.  In your case OracleServiceSYSDBA (hmmm... How did you find with this name?).

  For queries, you can use SQL * Plus which should also be installed.  If you want something GUI, you can use SQL Developer (you need to install separately I think).