When SDDM x64 says "Cannot find a J2SE SDK installed at ..." what is it actually looking for?

First of all,please forgive me if this question has been answered before, but search facilities in this new forum are even more rubbish than the old one, which is an achievement I wouldn't have thought possible.
Anyhoo.
I have downloaded the 64-bit version of Data Modeller, which comes without the JRE.
I have installed JDK1.3.0.21. I have subsequently also downloaded and installed JRE 1.7u21. However when I run datamodellerx64.exe for the first time it hurls with this message: "Cannot find a J2SE SDK installed at C:\Program Files\Java\jdk1.7.0_21\bin". It also doesn't like C:\Program Files\Java\jre7\bin (under the JDK install) or .C:\Program Files (x86)\Java\jre7\bin (the JRE install)
So what path does it actually want?
I suppose I could download and install the 32-bit version with the inbuilt JRE but that would be a pretty sorry workaround.
Cheers, APC
Message was edited by: APC - just realised I had typed "with the JRE" instead of "without", which is actually the entire source of the issue. Doh!

The first time you start up Data Modeler, it should prompt for the Java home. You should select the java.exe file within the jre\bin folder of a Java JDK.
Thanks! This was the bit which was confusing me. What I needed was C:\Program Files\Java\jdk1.7.0_21\jre\bin\java.exe
Of course, then I get a message telling me that versions above 1.6 are not certified, but I'm not installing a monstrous rootkit on my new laptop simply to run SDDM, so I guess I'll just rub along without the certification. It seems to start up just fine.
Cheers, APC

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Installation error: Cannot find a J2SE SDK installed at path C:\Program Fi

I am installing latest version of SQL Developer, Release 1.2. I have Sun Java 2 Standard Edition Version 1.5.0 (build 1.5.0_10-b03). When I browse and select the java.exe found it comes up with error: Cannot find a J2SE SDK installed at patch
C:\Program Files\Java\jre1.5.0_10
I am installing the version I downloaded for Windows systems with JDK1.5.
I have tried on two different machines.
Any ideas?

This is going to seem loooong, but comprehensive.
I'd initially always suggest using the bundled
package, since that's supposed to be a tested and
proven combination.You know what, I'm gonna be mighty surprised if you're implying that Oracle hasn't 'tested and proven' the releases at http://www.oracle.com./technology/software/products/sql/index.html other than the first 77 MB download labeled Oracle SQL Developer for Windows... :)
After having problems with a graphics card for
example, installing the latest JDK might be
indicated.Huh?!? Not a clue what you're talkin' 'bout! :S
It's also easy for users who don't know which Java
version to download, or even where to find it! You
guys have proven that: although it's stated you need
.First of all, it says right there on the download page (http://www.oracle.com./technology/software/products/sql/index.html) that:
"JDK 1.5 (JDK 5.0) is required. This is the minimum JDK version required"
And we've "proven that [..] although it's stated you need the JDK, [we]'ve tried running with the JRE" and have NOT been able to run the application. It just presents the user a dialog box to locate the 'SDK' manually and exits gracefully if you try to dismiss it. So, conclusively proven, the JDK (or as SQL Developer puts it, Java SDK) is required- QED.
And given users might have several versions running
on the same machine (I have half a dozen), sqldev
could easily pick up a wrong version.And every JRE installation (atleast all of Sun's) make sure they update the default (via PATH and other required system variables) JRE point to the latest one installed. So if you have anything 1.5+ you're good to go; if not, you've got an incompatile JRE. Doesn't sound that hard to me!
As for being bulky, even without the bundled JDK, it
still is.Ya missed the point. Developers are making Java applications bulkier by including the JRE/JDK with their distributions. A SQL Developer release sans JDK is about 46 MB; with JDK that climbs to 77 MB (sizes quoted from download page linked above).
Imagine what happens when you have, besides SQL Developer (JDK 1.5 included), some-cool-java-app that also includes the JRE/JDK it was built on; and then another-java-app that also includes a JRE/JDK... I bet JDeveloper also comes with a JDK bundled in. So, now you have FOUR copies of JRE/JDK (aside from the "have half a dozen" that probably installed themselves via Java Update Checker)!
Here's the big picture, the savings in disk space would only be the beginning of your benefits. Here's a few others:
- Class Data Sharing (http://java.sun.com/javase/6/docs/technotes/guides/vm/class-data-sharing.html) introduced in Java SE 5.0 provides for storing definitions of commonly used classes in a representation closer to machine code, even closer than bytecode, this reducing load and startup time. Plus all VM's launced using that particular distribution get to share the cache- Performace+ !!
Running each app offa' it's own VM just causes multiple caches to be loaded. You just multiplied your losses! :(
- Sun is currently working on a way to have applications simply inject into a running JVM. That way, there is no load and startup time for the JVM, just the time to load you app classes. Using different distros would completely defeat this!
(The reason why this feature isn't out yet is because they're still trying to make it possible to specify hitherto VM configurations like security and logging as application configurations. Then there's also the issue of setting up class loading boundaries between applications.
You say you don't have to bring over the VB runtime
for each app? I remember in the 90's doing it all the
time. Of course, being MS, now that's not necessary
anymore, since it's "magical" Windows. I don't have
any machine from Sun, but for sure they've got Java
bundled with it, right?I don't believe you had to do that since VB 5; and that's because MS realized that they messed up on this very point upto then! Sun worked the simple solution to that into their deployment strategy- install only ONE runtime and run all apps off that. As for you're half-a-dozen, I think you can safely uninstall the five older versions; because, even today, people are running apps developed using JDK1.1 on Java SE 6.0!
Again, I find the most logical difference between JRE
and JDK being the debugger. As you say it yourself:
JRE for end-users, who don't need to do any
debugging.
Now, sqldev is not just a table browser, but also for
debugging PL/SQL. 1 + 1 = 2.I think it's a little naive to differentiate between the JRE and JDK on just the debugger! Aside from the obvious inclusion of a compiler, the JDK has several other tools for monitoring/managing the heap, threads and logging on the fly. There's also the Doclet API and Sun's javadoc implementation, dev interfaces for instrumenting the VM, native interfaces, ...
And I reiterate, we're talkin' PL/SQL developers here. Why would I want to give a PL/SQL developer a Java Development Kit?!? ;|
Nevertheless, as said in the other thread, if the
team discloses how to circumvent the SDK check at
startup, you can go ahead and use the JRE. In any
case, you'd have to agree that won't work as
out-of-the-box solution...You're right, it won't work like a standard Windows OOTB app. But, it WILL work as a Java OOTB that only mandates that there be a JRE available; just like the scores of Java apps out there- from tiny little Pong clones to large IDE's like NetBeans.
BTW, don't even think about quoting Websphere/Rational/Eclipse as counter-arguments. They are the biggest offenders as far as this issue goes. And jikes is an abomination, a curse Sun must carry as a result to opening the VM Spec. But, I digress...

Cannot find a J2SE SDK installed at path C:\Program Files\Java\jre6

Hi,
I am trying to install the latest version of SQL Developer 3.0 on my brand new Windows7(64-bit) computer. I already installed the Java SDK6 (Update26). Unfortunatelly I am forcing some problems.
When I start the sqldeveloper.exe for installing - at the beginning when I browse and select the java.exe an error comes up:
Cannot find a J2SE SDK installed at path C:\Program Files\Java\jre6
Why isn't it working?
Can you help me? Any ideas?
Thanks a lot!

That's because you are trying to run SQLDeveloper with a JRE not a JDK.
Since you already installed a JDK you should have a folder labeled
jdk1.6.0_26in your C:\Program Files\Java directory.
If you cant find the proper JDK in your system the 64 bit version for windows can be found here:
http://download.oracle.com/otn-pub/java/jdk/6u26-b03/jdk-6u26-windows-x64.exe

Cannot find a J2SE SDK installed at path...

I posted this in the SQL-Deveolper forum, but perhaps it is better posted here, since it is a Java issue.
I found a thread for this same problem from 2007, but did not find an answer for it.
I'm installing sql-developer on a Windows7 machine 64bit. When I go to run the exe, I get the popup:
"Cannot find a J2SE SDK installed at path: C:\Program Files\Java\jre7."I've downloaded and installed a couple of jdk's to fix this:
jdk-6u37-windows-x64.exe
jdk-7u9-windows-x64.exe
These did not work.
Can anyone tell me what I need to download to get this to work and where I can find it?
Thanks,

I realized we have another wiindows machine that runs sql-developer just fine. I copied the jdk-6u25-windows-x64.exe from that machine and installed on the newer one. The install complained that a new version of java was already installed. But, the older version works where the newer one did not - does not.
So I'm good. But it would be nice to know why the new versions do not include all the foo that seems to make sql-developer work.

[RESOLVED] Cannot find a J2SE SDK installed at path: C:\java16

I have SQL Developer 3.0.04.34 in C:\apps\sqldeveloper\ and the 32-bit 1.6 JDK in C:\java16\. SQL Developer was working properly until this morning after I updated my JRE (C:\Program Files\Java\jre6\) from 1.5 to 1.6 and JDK (C:\java16\) from 1.6.something to 1.6.26. Now SQL Dev prompts me again for the path to java.exe, but when I specify C:\java16\bin\java.exe, it gives me the error shown in the thread title. The existing sqldeveloper.conf shows "SetJavaHome C:\java16". I found other threads that mention this error, but the problem is typically pointing to the JRE instead of JDK (C:\java16\ is the JDK in my case) or 32-bit vs. 64-bit (this is 32-bit JDK in XP x86). What else might cause the error? I'd rather not reinstall the SQL Developer package that includes the JDK since I already have the JDK elsewhere and it was working before.
EDIT: Never mind. Something must have gone wrong when I was updating the JRE and JDK. I reinstalled the JDK, and now SQL Developer starts.

When i start sqldeveloper.exe (there no exe with a 64 in the name) there ist a dialog that wants to know the path to the JRE.
I tried to chose the directory i placed the Java 7 JDK.
Tried the bin folder in that.
Tried the jre folder and the bin folder in jre.
Everytime i do this ther is the message "cannot find java se sdk installation".
Maybe i am doing it wrong.
What i did:
Downloaded jdk-7u45-windows-x64.exe from oracle.com
Downloaded sqldeveloper-4.0.0.12.84-no-jre.zip from oracle.com
Unzipped sqldeveloper-4.0.0.12.84-no-jre.zip to directory
Opened jdk-7u45-windows-x64.exe with 7zip, there opened tools.zip, unzipped tools.zip to a directory
Started sqldeveloper.exe from software directory and tried to find the JRE... diddn't work
Maybe sqldeveloper.exe ist looking for 32 bit Java?
Update:
Downloaded jdk-7u45-windows-i586.exe from oracle.com
Opened jdk-7u45-windows-i586.exe, there opened tools.zip, unzipped tools.zip to a directory
Started sqldeveloper.exe from software directory and tried to find the JRE... diddn't work
Doesn't look like its working this way.
I would realy be very happy to have the new SQL Developer packaged with JAVA again - thats the sollution i am looking for.
Nachricht geändert durch user2905395 - added update

Problem installing SQLdeveloper. Cannot find a J2SE SDK error

I am trying to install SQL developer in my windows 7 64 bit machine. It is asking for the java path when clickin the sqldeveloper.exe. I am giving the path of java as C:\Program Files (x86)\Java\jre6\bin where i have java application file available. but i am getting cannot find a j2se SDK installed in the above path error. Please help

Hello,
please ask this in the appropriate forum: {forum:id=260}
It seems to be a common problem
https://forums.oracle.com/forums/search.jspa?objID=f260&q=win+64bit
Regards
Marcus
Edited by: Marwim on 12.10.2011 10:59
added search link

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When SDDM x64 says "Cannot find a J2SE SDK installed at ..." what is it actually looking for?

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