When i try to start SQLDeveloper, it is giving me the following error in command prompt:
Error: This product requires a Java(TM) Platform 5.0 runtime.
You are using 1.4.2-b28 from C:\j2sdk1.4.2\jre
But my JAVA_HOME is set to java 6
JAVA_HOME=C:\Program Files\Java\jdk1.6.0_32
Can anyone explain what exactly to do to resolve this?
Oracle SQL Developer uses a configuration file named products.conf which is situated at your roaming directory.
If you are using Windows 7 then the directory path will be: C:\Users\\AppData\Roaming\sqldeveloper\1.0.0.0.0
- Delete whole sqldeveloper directory from C:\Users\\AppData\Roaming\
- Re run sqldeveloper executable, this will prompt for jdk home
- Select jdk home. i.e C:\Program Files\Java\jdk1.7.0_55
- Enjoy!
In my case i had 2 folders under C:\Users\username\AppData\Roaming\
- sqldeveloper
- SQL developer
after removing both of them and launching installation dir\sqldeveloper\sqldeveloper\bin\sqldeveloper64.exe it worked.
True acknowledgement / attribution belongs to Vishal at the following URL: http://vishalorcl.blogspot.com/2012/12/sql-developer-from-11201-client-software.html. It describes in detail how to resolve this problem. From the page:
I am running Oracle 11g version of SQLDeveloper. I have same problem noted above, after fresh install of Oracle. The summary is that SQLDeveloper seems to require the Java 32-bit JDK.
Install 32-bit jdk V7 from Oracle: http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
There is a sqldeveloper.conf file located in C:\app\UserName\product\11.2.0\dbhome_1\sqldeveloper\sqldeveloper\bin
In the file change pathname within the line at end of file: SetJavaHome C:\app\admin\product\11.2.0\client_1\jdk
To point to pathname of the jdk install directory; also sometimes known as JAVA_HOME.
I had this problem too! you should go to: C:\Users-your user name-\AppData\Roaming\sqldeveloper-version of your sql developer- there is a file named product.conf there. Right click on it and edit it with notepad in the document change the address of java home and save it. Done!
I don't think SQLDeveloper uses the environment variable. There should be a .conf file that contains a reference to the JDK directory.
I solved this by deleting the folder /home/USERNAME/.sqldeveloper After that, I started SQLDeveloper and without typing anything, it found the right java-version and started without complaining :-)
So, if you don't want to delete the whole folder, maybe search there for the file which defines the java-version :-)
edit: just found that: "Type the full pathname of a J2SE installation (or Ctrl-C to quit), the path will be stored in ~/.sqldeveloper/jdk"
check the version of java that you are installing to you Pc the error show that you are using 4 so uninstall the java that you have then install a new one that is version higher than 5
In my case, none of the other suggestions worked. Instead, I moved the installation directory from
c:\sqldeveloper
to
anything else
And things worked again. Perhaps, some Windows registry value got broken in an unfixable way...
Removing the instances from the registry worked for me.
来源：https://stackoverflow.com/questions/22810318/sqldeveloper-not-starting