Class.forName in jdbc

Similar Questions

• Error Trying to use java.lang.Class.forName ("oracle.jdbc.OracleDriver") ';

  I use SDDM 4.0.1.836.  I get the error message "wrapped java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver (Query Test n ° 3).

  importPackage(java.sql);
  java.lang.Class.forName ("oracle.jdbc.OracleDriver");
  conn = java.sql.DriverManager.getConnection ("jdbc:oracle:thin:@localhost:1521:DESN", "READONLY_USER", "READONLY");
  stmt = conn.createStatement();
  rset = stmt.executeQuery("SELECT * FROM DUAL");
  rset.close();
  stmt.close();
  conn.close();
  
  

  There is an archived topic,unable to connect to oracle (not found driver) transformation script , but this issue has not been resolved.

  It seems that the thread has been forgotten.

  You need to add following the datanodeler64.conf and/or datamodeler.conf

  AddJavaLibFile... /... /JDBC/lib/ojdbc6.jar

  Philippe

• CodeModuleManager and Class.forName

  I have a specific question.

  My application download both modules and install them.  Both modules are libraries.

  Module 1: Library without any dependencies.

  Module 2: Library that depends on another Module 1 and Module already installed.

  I have install the module 1 and then install the module 2.

  At this point if I call Class.forName ("class of module 1"), everything works.

  If I call Class.forName ("module class 2"), he throws ClassNotFoundException.

  Any ideas?

  The modules are correct return codes when installed CMM and make their appearance in the list of modules.  They are both duly signed.

  Note, installation from CMM requires a restart and the same problem occurs after restarting the device.

  It seems so be that module 1 using code RTT required.  After fixing that Module 2 is loaded...

• I need help with the use of Class.forName and getResourceAsStream

  I am trying to write code that will play an audio file. All references I found the point of code as follows...

                            Class dir = Class.forName("lib.testother");
                              InputStream input = dir.getResourceAsStream("/explosion.aac");
                              Player player =
                                  javax.microedition.media.Manager.createPlayer(input, "audio/aac");
                              player.realize();
                              VolumeControl vol = getVolumeControl(player);
                              if (vol != null)
                              {
                                  int volume = vol.getLevel();
                                  vol.setLevel(volume);
                              }
                              player.prefetch();
                              player.start();
  

  I use Blackberry JDE. Now, I'm supposed to put the audio file of the project?

  Second, how then use the class.forName function? I put the audio file as a member of the project and then tried the above code and I get that it can not find lib.testother (which is the path of the code).

  If I use getClass() instead of dir above, getResourceAsStream returns null.

  Are there examples of the use of these or how to include the audio in your project... from end-to-end. The code snippet above is all I could find and it isn't enough.

  THX

  D

  Check this thread:

  http://supportforums.BlackBerry.com/Rim/Board/message?board.ID=java_dev&message.ID=11616&query.ID=18...

• CodeModuleManager.createNewModule and Class.forName

  I install a module on interest. I use funtion of CodeModuleManager.createNewModule and CodeModuleManager.saveNewModule. It s completed successfully.

  Then I try to get a class that sits inside the new module. but I can't class. If I have resetblackberry, then I can get this class. but, just after the creation and registration of module, I can not class. I have to reset the device.

  is it possible that get new class without resetting the unit?

  Note: I call CodeModuleManager.isResetRequired (funstion), and for me it s not no need to reset.

  and I am using BB 9700

  Welcome to the club.

  The only 'solution' that I know is to make the module a startup auto/library/application.  What will happen, is that the app will be linked correctly before you start and Class.forName will start work.   After you have installed via CMM, Autostart library starts automatically (calling the libMain method) and will be linked/fixed.  Only I must give ~ 1 second after the installation to do his thing.

  Once you get that 'fixed', you might in other "features" that revolve around download cod and their installation by programming.    Some have difficulties, some don't.

  Go to the question of Class.forName, he just might start to work for you, if the library is fairly simple.

• Class.forName throws ClassNotFoundException

  I encountered a similar problem as the display thread: http://supportforums.blackberry.com/t5/Java-Development/CodeModuleManager-and-Class-forName/m-p/6338...

  However, the solution for the first display does not solve my problem, or maybe I'm not clearly understand. I decided to open a new thread and want to help with.

  My workspace contains three projects: main project which is BB application, module 1 is a library and acts as an interface between the main project and module 2. module 2 is a library as well and depends on module 1. I want to create an instance of module 2, if a third-party driver is installed on the device; otherwise, just use module 1.

  After you install applications on the real BB and with thirdpartydriver installed, if I call Class.forname ("class of module 1"), it works for me, however, if I call Class.forname ("module class 2"), it still throws ClassNotFoundException.

  The application works very well on Simulator

  The three projects are properly built and signed.

  Thanks in advance for any help coming.

  Solution found:

  Adding a control RIM API dummy in all libraries depended to force RRT code signing enabled for all libraries solved my problem.

  Thanks for all the answers.

• Failed to load class com.timesten.jdbc.TimesTenDriver

  Hello

  I want to use proxool with TimesTen database, but it does not work, please help...

  URL of the pilot: = jdbc:timesten:direct:dsn; oraclepwd =

  driver: com.timesten.jdbc.TimesTenDriver

  
  

  It is said:

  Caused by:

  org.xml.sax.SAXException: unable to load class com.timesten.jdbc.TimesTenDriver

  org.logicalcobwebs.proxool.ProxoolException: unable to load class com.timesten.jdbc.TimesTenDriver

  at org.logicalcobwebs.proxool.configuration.XMLConfigurator.endElement(XMLConfigurator.java:198)

  at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1528)

  at org.apache.crimson.parser.Parser2.content(Parser2.java:1779)

  at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1507)

  at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:500)

  at org.apache.crimson.parser.Parser2.parse(Parser2.java:305)

  at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:442)

  at javax.xml.parsers.SAXParser.parse(SAXParser.java:392)

  at org.logicalcobwebs.proxool.configuration.JAXPConfigurator.configure(JAXPConfigurator.java:87)

  at org.logicalcobwebs.proxool.configuration.JAXPConfigurator.configure(JAXPConfigurator.java:56)

  Caused by: org.logicalcobwebs.proxool.ProxoolException: unable to load class com.timesten.jdbc.TimesTenDriver

  at org.logicalcobwebs.proxool.ConnectionPool.setDefinition(ConnectionPool.java:749)

  to org.logicalcobwebs.proxool.ConnectionPool. (ConnectionPool.java:121)

  at org.logicalcobwebs.proxool.ConnectionPoolManager.createConnectionPool(ConnectionPoolManager.java:93)

  at org.logicalcobwebs.proxool.ProxoolFacade.registerConnectionPool(ProxoolFacade.java:109)

  at org.logicalcobwebs.proxool.ProxoolFacade.registerConnectionPool(ProxoolFacade.java:97)

  at org.logicalcobwebs.proxool.ProxoolFacade.registerConnectionPool(ProxoolFacade.java:69)

  at org.logicalcobwebs.proxool.configuration.XMLConfigurator.endElement(XMLConfigurator.java:196)

  ... 12 more

  I don't know anything about "proxool", but:

  1. your JDBC URL must provide a value for the DSN, UID, and PWD attributes with values and, if Oracle access/updated caching is used, a value for oraclepwd.

  2. in order for the JDBC driver to find and load:

  (a) the TimesTen ttjdbc appropriaten. jar file are added to the JVM classpath.

  (b) the TimesTen 'lib' directory (Unix/Linux) or the 'bin' (Windows) directory are added to the JVM's native library path. The JDBC TT driver is a JDBC/ODBC bridge and needs to load native ODBC libraries.

  Chris

• Exception in thread "main" java.lang.RuntimeException: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

  
  

  Dear Sir

  
  

  I have this problem to connect the JAVA oracle database. I use Eclipse March, here is my code:

  package db;

  import java.sql.Connection;

  to import java.sql.DriverManager;

  import java.sql.SQLException;

  public class {ConnectionFactory

  public static {connection getConnection()

  try {}

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

  return DriverManager.getConnection ("jdbc:oracle:thin:@myhost:1521:orcl", "scott", "Tiger");

  } catch (ClassNotFoundException |) SQLException e) {}

  throw new RuntimeException (e);

  }

  }

  Public Shared Sub main (String [] args) {}

  Connection connection = ConnectionFactory.getConnection ();

  System.out.println ("Conexao criada com sucesso.");

  try {}

  Connection.Close;

  } catch (SQLException e) {}

  e.printStackTrace ();

  }

  }

  }

  Belown the error:

  Exception in thread "main" java.lang.RuntimeException: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

  DB. ConnectionFactory.getConnection (ConnectionFactory.java:14)

  DB. ConnectionFactory.main (ConnectionFactory.java:19)

  Caused by: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

  at java.net.URLClassLoader.findClass (unknown Source)

  at java.lang.ClassLoader.loadClass (unknown Source)

  to Sun.misc.Launcher$appclassloader$ AppClassLoader.loadClass (unknown Source)

  at java.lang.ClassLoader.loadClass (unknown Source)

  at java.lang.Class.forName0 (Native Method)

  at java.lang.Class.forName (unknown Source)

  DB. ConnectionFactory.getConnection (ConnectionFactory.java:11)

  ... 1 more

  Someone help me, please?

  Thank you

  Jurandyr F. Alves

  A ClassNotFound exception means just what it says: it can't find this class.

  Make sure that the ojdbc7.jar file is in your classpath.

• Need to call the PL/SQL Package in the group dynamics of approval class that implements IDynamicApprovalGroup

  Hi all

  This is regarding the approval of invoice AP I need in my project where the user selects the users/people approval when creating the invoice based on logic. There may be any number of users who could be part of the approval group.

  Approval users information is stored in a table with a single Bill.

  When the user initiates invoice approval, approval of the Bill should go to all the people/users selected in the invoice.

  I created the dynamic of approval group which is the result of a java class. This java class implements IDynamicApprovalGroup. (what is the oracle Developer Guide).

  I called PL/SQL to java class package to get all the details of users of custom for the current invoice table.

  I used the DriverManager.getConnection method by hard coding (JDBC URL, Username, Pwd) connection details that works perfectly fine.

  But I don't want to hard-code the connection details because it will change in bodies SIT/UAT/PROD.

  Please ask you to guide me if there is no solution for the information of connection without hard coding it.

  Following code used to get the connection details

  try {}

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

  System.out.println ("= class loaded");

  }

  catch (ClassNotFoundException ex) {}

  System.out.println ("= class loading error");

  ex.printStackTrace ();

  }

  Fitting out = null;

  CallableStatement cstmt = null;

  Try

  {

  connection = DriverManager.getConnection ("jdbc:oracle:thin:@xxhostname:1521/SID", "FUSION", "*");

  Connection = GetConnection ();

  System.out.println ("= connection =" + connection);

  prepare the call

  cstmt = connection.prepareCall ("{call XX_AP_INV_DYN_APPROVAL_PKG. {GET_GROUP_PARTICIPANTS (?,?)} ») ;

  cstmt.setString (1, '12345');   ID on invoice

  Exit of the register

  cstmt.registerOutParameter (2, java.sql.Types.VARCHAR);

  Call the stored procedure

  cstmt. Execute();

  System.out.println ("= procedure being executed");

  approvalGroupMembers = cstmt.getString (2).split("#");

  System.out.println ("= output:" + cstmt.getString (2));

  }

  catch (Exception ex) {}

  ex.printStackTrace ();

  }

  Finally

  {

  Try

  {

  If (cstmt! = null)

  close the callable statement

  {

  cstmt. Close();

  cstmt = null;

  }

  System.out.println ("= stmt closed");

  }

  catch (SQLException ex)

  {

  System.out.println ("= stmt close err");

  ex.printStackTrace ();

  }

  Try

  {

  If (connection! = null)

  close the connection

  {

  Connection.Close;

  connection = null;

  }

  System.out.println ("= closed conn");

  }

  catch (SQLException ex)

  {

  System.out.println ("= Close conn err");

  ex.printStackTrace ();

  }

  }

  Thank you

  Dipak.

  HI Dembélé - you should be able to call the provider database from the java class. Documentation is here. However, you need to specify the name of the data provider that is the same in all environments. Do you know what it is? If it's not I'll take a look and get back to you.

  __

  Peter Maurer

  Relationship with the developers of Applications in fusion

  https://blogs.Oracle.com/fadevrel/

• 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

• Cannot be cast to ConnectionWrapper to oracle.jdbc.OracleConnection

  Hello community,

  I have a problem to get a custom of my database object.

  Exception:

  Java.lang.ClassCastException

  org. Apache.Tomcat.DBCP.dbcp2.PoolingDataSource$ PoolGuardConnectionWrapper

  cannot be cast to oracle.jdbc.OracleConnection to

  oracle.sql.scruptdescriptor.createDescriptor)

  My Code:

  Class.forName("oracle.jdbc.OracleDriver");
          Context contextEnv = (Context) new InitialContext().lookup("java:/comp/env");
          DataSource dataSource = (DataSource) contextEnv.lookup("xxxx/xxx/xxxx_xxx");
       
          Connection connectionDB = dataSource.getConnection();
    
         
          System.out.println("-- 1 --");
          System.out.println("Type: " + connectionDB.unwrap(oracle.jdbc.OracleConnection.class));
       
         
          final StructDescriptor structDescriptor_Mitglied = StructDescriptor.createDescriptor("KPZ.RECTYPE_MITGLIED", connectionDB);   
          final ResultSetMetaData metaData_Mitglieder = structDescriptor_Mitglied.getMetaData();
          System.out.println("-- 2 --");
        
           Struct recMitglied = connectionDB.createStruct("KPZ.RECTYPE_MITGLIED",new Object[]
                                               {
                                                   itemMitglied.getItemProperty("bname_id").getValue()
                                                  ,itemMitglied.getItemProperty("bvorgang_id").getValue()
                                                  ,itemMitglied.getItemProperty("mnr").getValue()
                                                  ,itemMitglied.getItemProperty("bnr").getValue()              
                                                  ,itemMitglied.getItemProperty("anrede").getValue()
                                                  ,itemMitglied.getItemProperty("titel").getValue()
                                                  ,itemMitglied.getItemProperty("vorname").getValue()
                                                  ,itemMitglied.getItemProperty("nachname").getValue()
                                                  ,itemMitglied.getItemProperty("name1").getValue()
                                                  ,itemMitglied.getItemProperty("name2").getValue()
                                                  ,itemMitglied.getItemProperty("name3").getValue()
                                                  ,itemMitglied.getItemProperty("strasse").getValue()
                                                  ,itemMitglied.getItemProperty("haus_nr").getValue()
                                                  ,itemMitglied.getItemProperty("plz").getValue()
                                                  ,itemMitglied.getItemProperty("ort").getValue()
                                                  ,itemMitglied.getItemProperty("telefon").getValue()
                                                  ,itemMitglied.getItemProperty("email").getValue()
                                                  ,itemMitglied.getItemProperty("status_kurz").getValue()
                                               });
                   System.out.println("-- 3 --");
                                             
         
           CallableStatement cs;   
           cs = connectionDB.prepareCall("BEGIN KPZ.PCK_MITGLIED.PRC_LESE_MITGL_ADRESSE(?,?,?); END;");
          
         
          cs.setObject(1, recMitglied);       
          cs.registerOutParameter(2, Types.STRUCT,"KPZ.RECTYPE_TECHINFOS");    
          cs.registerOutParameter(3, Types.ARRAY,"KPZ.TABTYPE_MITGLIED");
          
          cs.execute();
  
  
  
  

  Context.Xml

    <Resource name="xxxx/xxx/xxxxx" auth="Container"
                type="oracle.jdbc.pool.OracleDataSource"
                driverClassName="oracle.jdbc.OracleDriver"
                factory="oracle.jdbc.pool.OracleDataSourceFactory"
                url="jdbc:oracle:thin:@xx.xx.xxx.xxxx:xxxx:AAAAAA"
                user="xxxxx" password="xxxx" maxTotal="20" maxIdle="10"
                maxWaitMillis="-1"/>   
  
  

  If someone has an idea, id would be great.

  THX

  Hi, Yes. You get a connection regrouped, which naturally is a wrapper around naked OracleConnection

  and pass you (still packed connection) to a method of Oracle that in their own country is expected to benefit from a nude

  OracleConnection.

  Try this:

  OracleConnection oconn = connectionDB.unwrap (OracleConnection);

  final StructDescriptor structDescriptor_Mitglied = StructDescriptor.createDescriptor ("KPZ. RECTYPE_MITGLIED", oconn);

  Struct recMitglied = oconn.createStruct ("KPZ. RECTYPE_MITGLIED", new Object []...

  oConn = null; do not use for standard JDBC, and * do not close TI *.

• JDBC: thin gives error mystery

  Hi all

  I'm using Oracle 11 G and I have a java clause that is used to connect the other DB and extract the data. Here is my Echappementjdbc

  Public Shared Sub query (string usr, String pssw, String hostname, String, String DB, String InitialDate port) survey of exceptions
  {
  Class.forName ("oracle.jdbc.OracleDriver");
  String url = "jdbc:oracle:thin:@//" + name + ":" + port + "/" + DB;
  Jacot connection = DriverManager.getConnection (url, usr, pssw);
  try {}
  Statement stmt = connIW.createStatement ();

  Now I get

  ORA-29532:
  Appeal of Java completed by eception Java exception: java.sql.SQLException:
  ORA-01017: name of user and password invalid. connection refused

  But I can't able to connetc with Sql developer, using the same user name, password, HOST, port, and DB Service name .

  Could help me solve the problem.

  Kind regards

  San.

  We have fixed the problem. This
  is an Oracle Bug, please see the Oracle note for reference below.

  Connection to the external database
  Oracle Jvm using the Jdbc thin driver server-side throws Ora-01017 (Doc ID
  1303712.1)

  Applies to: Version - JDBC: 11.2.0.1 and later [Release: 11.2 and later] Information in this document applies to any platform. Symptoms A Java stored procedure using the JDBC/thin driver side server to connect to another database. When Java code is deployed on a pre - 11 g of the side database server JDBC/thin connection works very well. Once the Java code is deployed on a 11.2 the database-side JDBC/thin server failed to connect with ORA-01017: name of user and password invalid. connection refused If the Java code is executed on an external JAVA virtual machine connection works fine. Despite the error ORA-01017 it was determined that the user name and password are correct, and that it is not a matter of case sensitivity. Cause Corruption with the JIT compiled version of Java code. Oraclei¿½ The database Java Developer's Guide 11g Release 1 (11.1) Part number B31225-05 "Overview of the JITStarting JVM Oracle with Oracle 11 g release 1 (11.1), There's a just-in-time (JIT) compiler for Oracle JVM environment. A JIT for Oracle JVM compiler allows much faster execution, because it manages the invalidation, recompilation and code without an external storage mechanism. Based on profiling data collected dynamically, this compiler seamlessly selects the Java methods to compile to native machine code and dynamically make them available for Java sessions running. In addition, the compiler can take advantage of the Oracle JAVA virtual machine class model to possibly persist methods Java compiled in the database of calls, sessions, or instances. This persistence avoids unnecessary recompilations overload through sessions or instances, when we know that semantically the Java code has not changed. " Solution Workaround solution: change the system java_jit_enabled = FALSE; This allows the JIT code to be bypassed, by simply interpreting the Java the code that is generated by bytecode, rather than using the JIT. There is no need to re - compile Java code. Just run the command above

  
  and repeat the Java stored procedure.

  To restore the functionality of JIT just do:

  change the system
  java_jit_enabled = TRUE;

  Solution:

  Delete all the lines in the java table $ mc$ and restart the database

  The java$ mc$ table stores the persistent version of the JIT code generated
  for performance reasons. remove this code apparently requires the JIT to
  regenerate the code.

• To connect to an Oracle database using oracle.jdbc.OracleDriver: error

  Hello

  I am trying to connect to an Oracle database so that we can extract information on tables, views, and packages.

  Using the Data Modeler (transformation script) API, we will add these notes to the corresponding objects in the Data Modeler.

  I'll start with this:

  importPackage (java.lang);

  importPackage (java.awt);

  importPackage (java.sql);

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

  An error occurs when I run this code:

  

  It must be something of Java...

  Someone at - it a suggestion?

  Problem solved! A colleague of mine referred to in this post: import def properties from Oracle Designer

  More in detail: it's this couple of lines:

  Copy the file ojdbc6.jar for... Directory of \datamodeler-home\jlib

  Add this line to datamodeler.conf

  AddJavaLibFile... /... /jlib/ojdbc6.jar

  I changed my file datamodeler.conf, DM rebooted and now is no longer an error when I try to use the Oracle JDBC drive.

• Error on Java class calling in the Oracle database

  I have a java class indicated below:

  /*

  * To change this license header, choose license headers in the project properties.

  * To change this template file, choose Tools | Templates

  * and open the template in the editor.

  */

  package oracletree1;

  import java.sql.Connection;

  to import java.sql.DriverManager;

  import java.sql.ResultSet;

  import java.sql.SQLException;

  import java.sql.Statement;

  /**

  *

  * @author oracle

  */

  public class TREEUPDATER {}

  int levels;

  int NodeId;

  int ParentId;

  String FatherID;

  int ChildBed_new;

  int ChildBes_new;

  int ChildMande_new;

  int ChildBed_old;

  int ChildBes_old;

  int ChildMande_old;

  int ParentBed;

  int ParentBes;

  int ParentMande;

  Script string;

  String ValueState;

  String TreeState;

  Public TREEUPDATER() throws SQLException {}

  }

  public void update (levels int, int NodeIds, int childBed_old, int childBes_old, int childMande_old) throws SQLException {}

  This. ChildBed_old = childBed_old;

  This. ChildBes_old = childBes_old;

  This. ChildMande_old = childMande_old;

  This. Levels = levels;

  This. NodeId = NodeIds;

  String [] array;

  try {}

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

  } catch (ClassNotFoundException e) {}

  System.out.println ("where is your Oracle JDBC Driver?');

  return;

  }

  System.out.println ("Oracle JDBC Driver registered!");

  Fitting out = null;

  try {}

  connection = DriverManager.getConnection)

  "jdbc:oracle:thin:@192.168.1.12:1521:orcl", "tree1"

  'oracle');

  } catch (SQLException e) {}

  System.out.println ("connection failed! Check the console output");

  return;

  }

  If (connection! = null) {}

  Statement stmt = connection.createStatement ();

  Instruction stmt2 = connection.createStatement ();

  stmt.executeUpdate ("insert into test.java_test (id) values (21)" ");

  ResultSet rs = stmt.executeQuery ("SELECT * from value" + "where nodeid =" + NodeId);

  ResultSet rs2 = stmt.executeQuery ("select * from tree where id =" + NodeId);

  While (RS. Next {}

  This. FatherID = rs2.getNString("FatherID");

  This. ChildBed_new = rs2.getInt ("bed");

  This. ChildBes_new = rs2.getInt ("bes");

  This. ChildMande_new = rs2.getInt ("control");

  table = new String [100000];

  Table = FatherID.split ("_");

  for (int i = 0; i < array.length; i ++) {}

  ResultSet rs3 = stmt2.executeQuery ("SELECT * from tree" + "where id =" + array [i]);

  This. ParentId = rs3.getInt ("id");

  This. ParentBed = rs3.getInt ("bed");

  This. ParentBes = rs3.getInt ("bes");

  This. ParentMande = rs3.getInt ("control");

  connection.setAutoCommit (false);

  ParentBed = ChildBed_new - ChildBed_old;

  ParentBes = ChildBes_new - ChildBes_old;

  This. TreeState = rs2.getNString ("state");

  If (TreeState.equalsIgnoreCase ("BED")) {}

  This. ParentMande = ParentBed - ParentBes;

  } else {}

  This. ParentMande = ParentBes - ParentBed;

  }

  This. Script = ("update the bed = bed set value +" + ParentBed + "and bes = bes +" + ParentBes + "and control = control +"+ ParentMande ")

  + ' where id = "+ ParentId);»

  stmt2. ExecuteUpdate ("" + Script);

  }

  }

  }

  }

  }

  I have a main class, which show below:

  /*

  * To change this license header, choose license headers in the project properties.

  * To change this template file, choose Tools | Templates

  * and open the template in the editor.

  */

  package oracletree1;

  import java.sql.SQLException;

  /**

  *

  * @author oracle

  */

  public class OracleTree1 {}

  /**

  @param args command-line arguments

  */

  Public Shared Sub main (String [] args) throws SQLException {}

  TODO logical application of the code here

  TREEUPDATER t = new TREEUPDATER();

  }

  }

  I was responsible for these classes in oracle database 11 g 2 and I want to use a trigger to execute the updating() method. If I created a procedure like this:

  CREATE OR REPLACE PROCEDURE REPORT4

  (

  LEVELS IN NUMBERS

  NODEID NUMBER

  CHILDBED_OLD NUMBER

  CHILDBES_OLD NUMBER

  CHILDMANDE_OLD NUMBER

  ) AS

  Name of the java LANGUAGE "TREEUPDATER.updating (1,2,3,4,5);

  But when I want to compile and run this procedure, I get this error:

  Error: PL/SQL: analysis of completed Compilation unit

  Error (9,16): PLS-00311: the declaration of 'TREEUPDATER.updating' (1,2,3,4,5) is incomplete or incorrect

  Can any one solve this?

  Thank you

  The correct syntax for PORCEDURE4 is:

  No it's not. I already gave the correct syntax, which apparently ignored you.

  I don't know how can pass these parameters to this method.

  My question is clear?

  It is clear that you are interested in reading the documentation. All the answers are there.

  You're mixing two things:

  (1) creating the procedure (once), and I already told you how to do it

  (2) the procedure call

  For 1)-do you only once :

  CREATE OR REPLACE PROCEDURE REPORT4)

  LEVELS IN NUMBERS

  NODEID NUMBER

  CHILDBED_OLD NUMBER

  CHILDBES_OLD NUMBER

  CHILDMANDE_OLD NUMBER

  )

  AS

  JAVA LANGUAGE

  NAME of ' oracletree1. TREEUPDATER.updating (int, int, int, int, int)';

  For 2)-procedure call:

  ...

  BEGIN

  ... of the code

  -you call proc with your real settings:

  procedure4 (v_levels, v_nodeid, v_childbed_old, v_childbes_old, v_childmande_old);

  ... rest of your code

  END;

  Pay attention to remarks from other institutions.

• JDBC

  I'm new to java...
  I am facing a problem of 'no driver found' in java using 4 type drivers database connectivity, even if I set the classpath of the jar file.
  so please give me some tip for this problem.

  >
  Please suggest me a solution to this problem.
  >
  Thanks for posting the code and the classpath. Now we can see what is the problem.

  Copy the following code

  Class.forName("oracle.jdbc.driver.oracleDriver");
  

  uses the wrong class name. The name of the class is "OracleDriver" with a capital letter 'o'.

  Use

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

  This ojdbc14.jar is is an ancient jar file. You should upgrade to the current version of the pot.