#18600 [Com]: Unable to create Java Virtual Machine

ID: 18600 Comment by: asifrrana at hotmail dot com Reported By: nalves at equifax dot com dot br Status: Open Bug Type: Java related Operating System: Windows 2000 PHP Version: 4.2.3 New Comment: Has anyone found a good (not using cgi-bin) resolution to this problem yet? I just downloaded the latest release 4.3.2 with JDK1.4.0 on Windows 2000 and I am still getting the same error "Fatal error: Unable to create Java Virtual Machine" Previous Comments: ------------------------------------------------------------------------ [2003-05-22 04:11:11] Mike at 123456 dot net Hi everybody, I experience the problem of the "Unable to create Java Virtual Machine", on a Windows 2000, with easyphp, after some search, my conclusion is that you couldn't use (for the moment) php as a module in Apache, you must for that use it in cgi mode (I tried it and it work fine, and change from module to cgi mode doesn't affect usage of PHP). My configuration is : Windows 2000 Apache 2.0.45 J2SDK 1.4.1_02 PHP 4.3.2 RC3 You must install J2SK, Apache, and then php (the tutorial indicate how to install in cgi mode), you can go to the following adress for installation (a very good tutorial) : http://hotwired.lycos.com/webmonkey/00/44/index4a_page8.html?tw=programming after that just configure you php.ini with the following values : [Java] extension=php_java.dll java.home = C:\j2sdk1.4.1_02\jre\bin java.library = C:\j2sdk1.4.1_02\jre\bin\server\jvm.dll java.library.path = C:\php4\extensions java.class.path = "C:\php4\extensions\php_java.jar;C:\MyClasses;" Don't forget to affect the extension_dir value like : extension_dir=C:\php4\extensions And now it's work. ------------------------------------------------------------------------ [2003-05-16 10:37:30] fj at hilab dot it I personally have experienced the same problem with the 1.4.0_02 SDK externally connected to php4.3.1 under Win2K. I had very frequently the aforementioned 'Unable to create Java Virtual Machine' error and after a number of tests I discovered that such error never happened the first time I restarted the php engine by restarting the Apache server. This made me think that the JVM is left in an abnormal state after the php interpreter exits the page. For this reason I inserted an explicit call to the System.exit(0) at the very end of the page and this solved all the problems! The only side effect is that now it is mandatory to call the flush() php function, or the page will not be completely shown... ------------------------------------------------------------------------ [2003-05-07 16:35:51] db_farr at excite dot com isnt there a way to close the instantiated class and release the resources????? like the unset() command.... seems that would clear any resource retention problem and allow php to reinstantiate the jvm. ------------------------------------------------------------------------ [2003-05-01 14:35:34] sohelnmerchant at yahoo dot com Hi, I am using PHP as a SAPI modlue in Apache (as it was recommended in the readme file that its unsafe to use PHP in CGI mode) on windows. Whenever I try to use a java class I keep on getting this problem "Unable to create Java Virtual Machine". Some people have sggested to use CGI version instead of SAPI. But I dont wanna use it for the reasons mentioned above. I am wondering, if there exist any patch which can eliminate this problem. Thanks, Sohel Merchant. ------------------------------------------------------------------------ [2003-04-30 05:27:08] belin at fc-net dot fr Running Apache 1.3.22 and PHP 4.3.1 as module, sablotron IS NOT enabled, and I use JDK 1.4.0_01 after many times configuring php.ini (there is jvm.dll bundled with my php distrib but it seems to be useless, I used the jvm.dll into the jre\server directory). well well well... it works when my PHP code is fully clean, even if I reload my page several times. now, let's try to make a little error... if i try to create an object (using $o = new Java(java_class_name)) if the class exists... no problem, if it doesn't, just get an error but all is ok, now if I try a java_class_name starting with a lowercase character... -> Unable to load virtual machine ok ok. close explorer, modify the script, and rewrite it correctly... lauching IE... and the script... -> Unable to load virtual machine seems that if one error occurs everything after is bad, even if it would not ! -> and then, the only thing to do is to shutdown apache, and restart it... then the script goes ok... conclusion. at the first error, shutdown and restart apache, aaaaaargh ???? NOTE : this is only true for the apache module, when using the cli version of php (command line), no probleme with java VM... hope it helps. -Nicolas, french coder ;o) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/18600 -- Edit this bug report at http://bugs.php.net/?id=18600&edit=1