Oracle SQL Developer Unable to find a JVM

Question

I m trying to open Oracle SQL Developer on my Windows7 64-bit   When I tried to open SQL Developer it asked for java exe path and I gave C  Java jdk1 6 0 34 jre bin java exe  I got an error from Oracle SQL Developer saying  Unable to find a Java Virtual Machine  To point to a location of a JVM  Please refer to oracle9i jdeveloper install guide  jdev install html       Any clue on how to fix this   Another Solution   This worked for me several times  Install JDK7 and point to location of jdk7 jre bin java exe

User · Accepted Answer

Probably this is you are looking for  from this post    Oracle SQL developer is NOT support on 64 bits JDK  To solve it  install a 32 bits   x86 JDK and update your SQL developer config file  so that it points to the 32 bits JDK  Fix it  Edit the    sqldeveloper conf     which can be found under     ORACLE HOME  sqldeveloper sqldeveloper bin sqldeveloper conf     make sure    SetJavaHome    is point to your 32 bits JDK   Update  Based on  FGreg answer below  in the Sql Developer version 4 XXX you can do it in user-specific config file   Go to Properties - gt  Help - gt  About Add   Change SetJavaHome to your path  for example - C  Program Files  x86  Java jdk1 7 0 03  - this will override the setting in sqldeveloper conf  Update 2  Based on  krm answer below  if your SQL Developer and JDK  quot bits quot  versions are not same  you can try to set the value of SetJavaHome property in product conf  SetJavaHome C  Program Files Java jdk1 7 0 80 The product conf file is in my case located in the following directory  C  Users username AppData Roaming sqldeveloper 1 0 0 0 0

User · Answer

The solution that worked for me  If you have Sqldeveloper with java incorporated  you can use the  sqldeveloper bin sqldeveloper bat to launch sqldeveloper as told here

User · Answer

If you have a 64-bit version of SQL Developer  but for some reason your default JDK is a 32-bit JDK  e g  if you develop an Eclipse RCP application which requires a 32-bit JDK   then you have to set the value of the SetJavaHome property in the product conf file to a 64-bit version of JDK in order to run the SQL Developer   For example    SetJavaHome C  Program Files Java jdk1 7 0 80   The product conf file is in my case located in the following directory    C  Users username AppData Roaming sqldeveloper 1 0 0 0 0   The solution described above worked in my case  The solutions of  evgenyl and  FGreg did not work in my case

User · Answer

I just installed SQL Developer 4 0 0 13 and the SetJavaHome can now be overridden by a user-specific configuration file  not sure if this is new to 4 0 0 13 or not    The location of this user-specific configuration file can be seen in the user conf property under  Help -  About  on the  Properties  tab  For example  mine was set to   C  Users username AppData Roaming sqldeveloper 1 0 0 0 0 product conf   On Windows 7   The first section of this file is used to set the JDK that SQLDeveloper should use       By default  the product launcher will search for a JDK to use  and if none   can be found  it will ask for the location of a JDK and store its location   in this file  If a particular JDK should be used instead  uncomment the   line below and set the path to your preferred JDK    SetJavaHome C  Program Files  x86  Java jdk1 7 0 03   This setting overrides the setting in sqldeveloper conf

User · Answer

Version 1 5 is very  very old   In the latest builds  we support 32 and 64 bit JDKs  In version 4 0  we find the JDK for you on Windows  If the software can t find it  it prompts for that path   That path would look something like this  C  Java jdk1 7 0 45  You can read more about this here

User · Answer

The Oracle SQL developer is not supported by the 64bit JDK   To resolve this issue    Install a 32bit JDK  x86  Update your SQL developer config file  It should now point to the new 32bit JDK   Edit the sqldeveloper conf  which can be found under  ORACLE HOME  sqldeveloper sqldeveloper bin sqldeveloper conf Make sure SetJavaHome is pointing to your 32bit JDK    For example   SetJavaHome C  Program Files  x86   Java jdk1 6 0 13

User · Answer

The secret is you need to copy msvcr100 dll to the path where the installation says msvcr100 dll is missing   dialog box  and then try to install the sql developer   For me I had to create  bin folder in   C  sqldeveloper jdk bin   and Copy msvcr100 dll to it    If still not working  Try this   You might also need to change the config file settings found in   C  sqldeveloper sqldeveloper bin  Download and install 32 bit JDK  Windows  and set the path in config file as  SetJavaHome C  Program Files  x86  Java jdk1 7 0 01

User · Answer

There is another route of failure  besides the version of Java you are running  You could be running out of Heap RAM  If you had a once working version of SQLDeveloper  and you are starting to see the screenshot referenced in the original post  then you can try to adjust the amount of space SQLDeveloper requests when starting up    Edit the file    ide bin ide conf  Edit the line that specifies the max ram to use  AddVMOption -Xmx  reducing the size  For example I changed my file to have the following lines  which solved the issue    AddVMOption  -Xmx640M     Original Value AddVMOption  -Xmx256M      New Value

User · Answer

This is known to happen even if there are some syntactical errors in your heap space setting in the sqldeveloper conf  If you have defined the heap space in any of the wrong ways mentioned here  it still will show the same error when you launch it   EDIT   The correct way to set your heap size parameters would be something like this   AddVMOption -XX MaxPermSize 256M AddVMOption -Xms256M AddVMOption -Xmx768M

User · Answer

C  Users admin Downloads sqldeveloper sqldeveloper bin sqldeveloper conf    is misleading  it   s not the file which sets the Java Home variable  The actually file used is    AppData  sqldeveloper PRODUCT VERSION  product conf     in my case it is   AppData  sqldeveloper 1 0 0 0 0 product conf

User · Answer

I also had the same problem after installing 32 bit version of java  it solved

[java] Oracle SQL Developer: Unable to find a JVM

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