java.lang.UnsupportedClassVersionError and Java versions

Similar Questions

• ORA-29552: check warning: java.lang.UnsupportedClassVersionError

  Hello
  I am trying to load a class file into Oracle using loadjava and I get the following error:
  
  ORA-29552: check warning: java.lang.UnsupportedClassVersionError: helloworld (unsupported major.minor version 51.0)
  
  Without doubt, this is related to an inconsistency between the jdk I used to compile helloworld and the Oracle JVM? Or something like that?
  
  My JAVA_HOME is C:\Program Files (x 86) \Java\jre7\bin
  My version of javac used to compile the code is javac 1.7.0_15
  Java-version is '1.7.0_15 '.
  When I do a find on java.exe in the oracle installation directory (I'm under 11.2) I get
  
  J - PC:J > find - name java.exe
  ./Product/11.2.0/dbhome_1/JDK/bin/Java.exe
  ./Product/11.2.0/dbhome_1/JDK/JRE/bin/Java.exe
  ./Product/11.2.0/dbhome_1/JRE/1.5.0/bin/Java.exe
  
  Finally, the jdbc jar is ojdbc6.jar
  
  BTW, the code is just the ordinary Tester:
  

  import oracle.jdbc.driver.*;
  
  public class helloworld {
  
      public static String hello()
      {
          return "Hello World";
      }
  
      public static String hello(String s)
      {
          return "Hello " + s ;
      }    
      
      public static void main(String[] args)
      {
          helloworld.hello();
          helloworld.hello("Larry");
      }
  }

  How can I get this class file loaded? Thank you very much
  Jason

  >
  How can I get this class file loaded?
  >
  I suggest you load the file source instead. As cardan2 said all the class in the database files MUST be compatible with the internal JVM used by the database. For 11g versions it is Java 1.5 and the major version in the 1.5 Java class files is 49.

  You also have to take the same version in account number if you need load all the jar files in the DB. That the load will be successful if these classes have been compiled for a later version of compatibility of Java. ;

  If you load the source file and compiling the virtual machine JAVA DB will be used and you will not get this exception. You will also make sure that you use the correct support classes; for example, classes for the JDBC driver that you import will be versions of the JVM and those will NOT be the same as those of ojdbc6.jar.

  You must ensure that you are not currently using the JDBC classes or features that are not available in the version of DB of the driver.

  Using Java and JDBC in the database means that you might be able to take advantage of the internal JDBC driver for Oracle. Refer to the chapter "Server - Side internal Driver" of the Dev Guide JDBC for more details.
  http://docs.Oracle.com/CD/B28359_01/Java.111/b31224.PDF

  Overview of the Server-Side Internal Driver
  The server-side internal driver is intrinsically tied to Oracle Database and to the Java
  Virtual Machine (JVM). The driver runs as part of the same process as the database. It
  also runs within the default session, the same session in which the JVM was started.
  
  The server-side internal driver is optimized to run within the database server and
  provide direct access to SQL data and PL/SQL subprograms on the local database. The
  entire JVM operates in the same address space as the database and the SQL engine.
  Access to the SQL engine is a function call. This enhances the performance of your
  Java Database Connectivity (JDBC) applications and is much faster than running a
  remote Oracle Net call to access the SQL engine.
  
  The server-side internal driver supports the same features, application programming
  interfaces (APIs), and Oracle extensions as the client-side drivers. This makes
  application partitioning very straightforward. For example, if you have a Java
  application that is data-intensive, then you can easily move it into the database server
  for better performance, without having to modify the application-specific calls.
  

• java.lang.UnsupportedClassVersionError when loading bridges IB connectors

  Passing of one of the problems to the other... Installing PeopleTools on OEL5 8.52. Everything works; Database, application server, Task Scheduler process etc. However when I try to load the Integration broker gateways connectors I get the following error:
  
  java.lang.UnsupportedClassVersionError: Bad version in .class file number
  
  8.52 came with JRE 1.6.0 installed in the PS_HOME directory. $JAVA_HOME here and $JAVA_HOME is one of the first variables in my $LD_LIBRARY_PATH. I created a new domain after setting this correctly, because initially the JRE directory of Tuxedo preceded that of PS_HOME. I modified it in the tux.env everything seems to point to the JRE in the PS_HOME now. I always get this error however and it seems I'm missing something. Does anyone have an idea? When executing "including java' get the path correct and 'java-version' specifies the correct version. I tried several solutions posted on support of Oracle, but nothing helped. More later certified Java version is the version 1.6.0_23 - b05, but I am unable to find a download for that location. I doubt, that it is necessary to update of the JRE, since it is already running on 1.6.0.

  No, sorry, perhaps misunderstanding. I was using this jdk for Weblogic installation, as it seems that you have done.
  The symbolic link to jre under $PS_HOME goes to $PS_HOME/jre1.6.0.

  Nicolas.

• ODI - MySQL Connector Java 5.1.13 - java.lang.UnsupportedClassVersionError

  I use ODI 10.1.3.5 tries to connect to a version of database MySql 5.1.45
  
  I downloaded the mysql-connector - java5.1.13 - bin and installed in the oracledi\drivers directory
  
  I created the "Data Server" under the MySQL node successfully in the tab of the physical Architecture (Topology Manager).
  I used the test button and the connection is successful.
  
  Here's the problem:
  
  When I try to create the schema 'physical' I get an error
  
  java.lang.UnsupportedClassVersionError: com/mysql/jdbc/driver (unsupported major.minor version 49.0)
  
  Help
  
  I also tried the previous MySQL connector/j 5.0.8 I wasn't able to create "Data Server" with this driver.
  Any help is greatly appreciated.

  When I looked carefully at the jdbc, the JDBC url: / / is repeated twice. Correct and try again.
  JDBC:MySQL://JDBC:MySQL://10.128.8.134:3306 / alfresco333

• java.lang.UnsupportedClassVersionError

  When I compile my java file, there is no error. But when I run this code, it is in error:
  java.lang.UnsupportedClassVersionError: MyClass (unsupported major.minor version 50.0).
  
  What is this error? Why I get this error? How to solve this error?

  I suspect that another JRE is intalled on your computer, maybe even that some third-party software, and the path variable contains the path to the java.exe in front of your "last updated."

  Check the contents of the PATH system variable.

  DB

• java.lang.UnsupportedClassVersionError in Import Java Classes

  Hello
  I've recently upgraded to Forms Developer 10 g (10.1.2.3) and JDeveloper (10.1.3.4). I recompiled my classes in JDeveloper, and when I go to import them in my form, I get
  
  Exception occurred: java.lang.UnsupportedClassVersionError: classes/eps/Palm/Pick-up/customer/ResultSpec (unsupported major.minor version 49.0).
  
  Someone at - it clues about how to solve this problem?
  
  Thank you
  
  Margaret

  Make a right click on the project-> Project Properties node-> compiler...

  François

• I just download the latest Java Version 7 update 25 update build 1.7.0_25 - b16 and all hell broke loose with FF, nothing, but nothing works.

  I just downloaded the latest updates of Java Version 7 update 25 build 1.7.0_25 - b16 and hell is loose with my FF.

  Just a few examples are when I open the browser, it opens as a band full-width in the upper part of the screen and I have to drag down and reduce the size and instead of being able to start the browser in the bar of me seems to have all the tabs online when I click on the FF icon nothing opens.

  All my previous tabs are no longer in the browser, but seem to be hidden. I disabled the 'Java' content in the "Java Panel" but nothing seems to work. I uninstalled and reinstalled FF (version 21) but nothing seems to have solved the problem - I need really your help in simple, easy to understand instructions for my beloved than FF back to a working state.

  Well, I have the theme 'default' in the guise of cat. and under the cat just «click to Call Skype» Extensions

  No one else in use.

  So now, it would appear all is well and (fingers crossed), I have confidence he's going to stay that way - my grateful thanks for your time and your support once again, I appreciate it.

• How to solve this problem of ASDM and Anyconnect VPN with same java version?

  Hi two things that I can't the same Java version. I want to launch ASDM and also be able to connect on the web page through web browser (SSL vpn). Java is a pain. If my PC uses java 1.6.0.32. the ASDM is easily accessible, but cannot open my web page through web browser. If I install java 7, the Web page can be opened, but ASDM cannot be opened. Can someone tell how to solve the problem? Thank you

  Hello

  You can probably try 2 things here: -.
  Please go to control panel > Java > go to the Security tab > lower to medium security.
  You can also use Java version 45.

  Kind regards
  Dinesh Moudgil

  PS Please rate helpful messages.

• Firefox said I need to update Java plugin 2 but there is no update available on the Apple software update. On the Java site, I found that I use version 29 which is clean for snow leopard. Should I switch to Lion and use version 31?

  first noticed this need to be updated after download of Firefox 11.0

  Apple today released an update to Java version, so you should run software update to get security fixes.

  http://blog.Mozilla.com/addons/2012/04/04/Update-on-Java-blocklist/

• How to disable the Java version check

  I have a small pc based on Linux, Firefox running in kiosk mode. The pc is not connected to the Internet and only has access to a dedicated server under my control, serving a few Web pages and a java applet. Suddenly the system started complaining java my version of java is obsolete to spoil the kiosk display.

  -How to have firefox figure on the java version is outdated so the Slingshot pc end or the back-end server have Internet access
  -are there a way to disable security java verification in one of the firefox config files? Boots pc kiosk network, firefox profile is generated automatically, so I need a way to change this in the config files, not through the GUI that I won't be there every time the kiosk boots.

  I am running Firefox 13.0.1, I know it's old but security is not a problem because I only go to my own server and update the version of firefox on the PXE image is a pain.

  It turns out that the 9Oracle) Java installation has a built-in expiration date. He was so Java blocking himself, not firefox blocking Java.

  To disable the Java version check, start the Java ("jcontrol") Panel, tab "Security" the security level to 'low '. This will disable all the controls of the version and run Java.

  Needless to say that this should only be applied when executing in a completely controlled environment where you control the client and the server (as is the case in my setup).

  More information:
  http://docs.Oracle.com/javase/7/docs/TechNotes/guides/jweb/client-security.html

• Java version 7, updated 17 is NOT recognized by FireFox version 19.0.2

  Sigh. He has such a cacophony of solutions to solve Java installation problems that even a user strays. The last solution to the problems of installation of Java refers to Java v7 u10. The solution is yet to indicate the version of Firefox, they run. It comes to March 2013. The latter was published in September 2012.

  Frankly, I am very, very disappointed. I love Firefox - but someone dropped / is dropping the ball on this one.

  What on Earth is the solution for Firefox version 19.0.2 not recognize installation of Java version 7, 17 update?

  Anyone in the community KNOW?

  Answer to my own post:

  Out of all the solutions posted about Java install problems, I was able to glean one thing: a re-installation of Java and a reinstall of Firefox may well resolve the issue.

  Well, for me, so far, he has.

  The simple steps I followed:

  1. Create Restore Point (Control Panel, search for "Create a Restore Point")
  2 uninstall my version of Java (Panel, "Uninstall a program")
  3 reset
  4. Download Firefox latest version (for me, was the 19.0.2, version in my downloads folder)
  5. download AND install the latest Java (now version 7, updated 17 @java.com)
  6 reboot
  7 install the latest Firefox ("Firefox Setup 19.0.2" application-double-click in my downloads folder)
  8A started Firefox (NOTE: my current extensions and plugins are not affected) and went to my favorite site that requires Java.
  9 THANK GOD, it worked! (NOTE: he did ask me if I wanted to RUN THIS APPLICATION)
  .
  I hope it works for you.

  (Technical note: all posted solutions, I have taken note that it becomes clear registry entries are not updated or are deleted.) The re-installing Java (after the withdrawal and reset) and the re-installing Firefox solved 'my' problem).

• Cannot install Java Version 6 Update 17

  Original title: Java problem!

  I need to run a payroll Web system and it needs of Java version 6 update 17 but my computer won't open the web page. I already disable other versions, restart the pc, download the right version several times and nothing! Any suggestions? I have version 32-bit windows XP my antivirus disappeared and the firewall its judgment too don't know not what else to do

  Hi Vanessa,

  1. What is the name of the site?

  2. you receive an error code or message?

  3 is confined to a particular Web site or all Web sites?

  As you have disabled the other versions, I suggest you to other or old versions of Java to uninstall and install Java Version 6 Update 17 and check the issue.

  Please follow the links below:

  How to uninstall Java on my Windows computer? :

  http://www.Java.com/en/download/uninstall.jsp

  I hope this helps.

• I can't uninstall the old Java version 6 update 29. I get a "error code 1606: could not locate the directory."

  I am running Windows XP SP3, I can't uninstall the old java version 6 update 29, I get a "error code 1606: could not locate the directory... fatal error" How can I remove the old version of java?  I tried to uninstall regedit.exe, javaRa and windows unsuccessfully capability.  I uninstalled java, deleted the program file, but the version 6 29 poster update still in the program directory.  Help, please!

  original title: uninstall older versions of Java
  Hello
   
  Method 1:
  Check out the link and follow the steps.
   
  After uninstalling Java, how to remove its entry in the windows?
  http://www.Java.com/en/download/help/regkey_addremove.XML
   
  Method 2:
   
  See the article and follow the steps.
   
  Error message when you install a program: "Error 1606. Could not access the network location. "All the users\ directory '
  http://support.Microsoft.com/kb/315352
   
   
  Method 3:
  Check out the link and follow the steps.
  
  Download errors: 1305, 2755, 1606, etc..
  http://www.Java.com/en/download/help/error_installshield.XML
  Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base: 322756 (http://support.microsoft.com/kb/322756/ ) how to back up and restore the registry in Windows

• Java Version 6 Update 29-'not enough privileges to complete installation'!

  I need help please! I tried to download Java Version 6 update 29, but at the end of installation it is says something like "insufficient privileges to complete installation"! How can I fix it? I have a windows XP

  I guess that you have administrator privileges on your machine...

  Half the time, this problem can be fixed by going into the Control Panel Add/Remove Programs, uninstall Java, then reinstall Java from the web.

  The other half of the time, the uninstall will fail.  In this case, run the uninstall troubleshooting utility to this page:

  "Solve problems installing and uninstalling programs on Windows computers.
    <>http://support.Microsoft.com/kb/2438651/en-us >

  HTH,
  JW

• JRE 8 update 31 on a Machine of Windows 8 'Java-version' does not

  Hi people

  I work for a software development company. For the moment, we test Java 8 features with our software and the use of Java 8 in our environment. For installation, we use an automatic installation of the .msi file for 32-bit and 64-bit Version of Java 8.

  So far, everything works fine on our test with Java update 31 8 machines. The only thing we noticed is that we had a few mistakes when we were checking the version of java via the console.

  For example, when upgrade us a Java 7 to 8 Java machine, we have first of all uninstall Java 7, restart and then install Java 8. After that the process, we receive an error when we execute the command 'java-version '.

  Error: The "java" command is not found or is written incorrect (not exactly this error, because we have a German version of windows).

  This only happens on machines with windows 8

  On a windows 7, we get a correct output:

  C:\ > java-version

  Java version "1.8.0_31".

  Java (TM) SE Runtime Environment (build 1.8.0_31 - b13)

  Java for 64-bit Server VM (build 25.31 - b07, mixed mode)

  We could resolve the problem on a windows machine 8 by adding the java installation directory in the systemvariable "path." Once the 'C:\Program Files\Java\jre1.8.0_31\bin' is added, the command returns the correct output.

  This work around is not a good option, in my opinion, because I don't want to install some GPO crazy to hardcode the installationdir in the systemvariable. I think that the installer must handle this task for me.

  Someone here run into similar problems with java on windows 8 at or someone knows a better way to solve the problem?

  Best regards

  Daniel

  We could resolve the problem on a windows machine 8 by adding the java installation directory in the systemvariable "path." Once the 'C:\Program Files\Java\jre1.8.0_31\bin' is added, the command returns the correct output.

  This work around is not a good option, in my opinion, because I don't want to install some GPO crazy to hardcode the installationdir in the systemvariable. I think that the installer must handle this task for me.

  Someone here run into similar problems with java on windows 8 at or someone knows a better way to solve the problem?

  Your "workaround" is your solution. The Java installer does NOT change the path. Any change in the path must be carried out by the user.

  Another alternative is to create a simple "java.bat" file that is located in a directory that is located on the path.

  This batch file can add the entry appropriate to the PATH environment variable and then launch Java.