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Editorial Team
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Asked: 2026-05-16T05:50:43+00:00

I have installed jdk1.6.0_21 and sqldeveloper(using alien) on debian(lenny). Now when I run sqldeveloper

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I have installed jdk1.6.0_21 and sqldeveloper(using alien) on debian(lenny). Now when I run sqldeveloper it asks for J2SE installation path, after I type the jdk path it exits with the below error message.

Oracle SQL Developer
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Type the full pathname of a J2SE installation (or Ctrl-C to quit), the path will be stored in ~/.sqldeveloper/jdk
/usr/java/jdk1.6.0_21
/opt/sqldeveloper/sqldeveloper/bin/../../ide/bin/launcher.sh: line 430: /root/.sqldeveloper/jdk: No such file or directory
Error occurred during initialization of VM
java/lang/NoClassDefFoundError: java/lang/Object
Error: SQL Developer can't recognize the JDK version
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1 Answer

  1. Editorial Team

    There are several possible causes for this error message:

    • The VM can’t find the rt.jar file
    • The VM and the rt.jar file don’t match (e.g. VM is version 1.6.x, rt.jar is version 1.4)
    • The JDK wasn’t installed properly

    What’s the output of the following commands?

    which java
java -version
/usr/java/jdk1.6.0_21/bin/java -version
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