{"id":351,"date":"2011-03-24T13:08:08","date_gmt":"2011-03-24T18:08:08","guid":{"rendered":"http:\/\/www.serverprontouniversity.com\/?p=351"},"modified":"2018-11-06T00:44:56","modified_gmt":"2018-11-06T05:44:56","slug":"support-of-the-day-install-32-bit-software-on-64-bit-os","status":"publish","type":"post","link":"https:\/\/www.serverpronto.com\/spu\/2011\/03\/support-of-the-day-install-32-bit-software-on-64-bit-os\/","title":{"rendered":"Support of the day: Install 32-bit Software on 64-bit OS"},"content":{"rendered":"

This support solution is on installing a 32-bit app on an x64 system. Stated on the example of Java Development Kit installed on Fedora x64 bit.<\/p>\n

Three layers are essential when it comes to 32\/64bit compatibility:<\/p>\n

– Processor<\/p>\n

– Operating System<\/p>\n

– Application<\/p>\n

\"\"<\/a><\/p>\n

A 32 bit OS will run on a 32 or 64-bit processor, without any problems.<\/strong><\/p>\n


\nA 32-bit software on a 64 bit OS works but could cause difficulties even if the 64 bit systems are backward compatible with the 32-bit counterparts.<\/strong><\/p>\n


\nTo run a 64 bit OS, you need support from its lower level (a 64-bit processor). Therefore a 64 bit OS does not work for a 32 bit CPU.<\/strong><\/p>\n


\nTo run a 64-bit application, you need support from all lower levels (64 bit OS and 64-bit processor).<\/strong><\/p>\n

Linux commands:<\/span>
\nCheck your processor:<\/p>\n

# cat \/proc\/cpuinfo<\/pre>\n
Check Kernel\/System:<\/p>\n
# uname -m<\/pre>\n
For our example, the perfect solution is to install a 64-bit version of JDK on the Fedora x64 bit operating system.<\/p>\n
Here is the How-To-Do:<\/span><\/p>\n
The first thing we need to do is get the JDK installer
\nJDK Home from Oracle.com<\/p>\n
Once we have the installer in our local repository (as root):<\/p>\n
chmod a+x  jdk-6u21-linux-x64-rpm.bin.\/jdk-6u21-linux-x64-rpm.bin<\/pre>\n
Next, we must add these two lines to the file: \/etc\/profile<\/p>\n
JAVA_HOME=\/usr\/java\/jdk1.6.0_21\npathmunge $JAVA_HOME\/jre\/bin after<\/pre>\n
At the end of the line that starts with export, we need to add this our JAVA_HOME variable, so the line should be like this:<\/p>\n
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC JAVA_HOME<\/pre>\n
Then, we need to execute the next statements. Hint: Copy all the lines as it were just one.<\/p>\n
export JAVA_HOME=\/usr\/java\/jdk1.6.0_21\nexport JAVA_ALTERNATIVE_PRIORITY=16021\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/java java $JAVA_HOME\/bin\/java $JAVA_ALTERNATIVE_PRIORITY\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/javadoc javadoc $JAVA_HOME\/bin\/javadoc $JAVA_ALTERNATIVE_PRIORITY\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/appletviewer appletviewer $JAVA_HOME\/bin\/appletviewer $JAVA_ALTERNATIVE_PRIORITY\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/javah javah $JAVA_HOME\/bin\/javah $JAVA_ALTERNATIVE_PRIORITY\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/javac javac $JAVA_HOME\/bin\/javac $JAVA_ALTERNATIVE_PRIORITY\n\/usr\/sbin\/update-alternatives --install \/usr\/bin\/jar jar $JAVA_HOME\/bin\/jar $JAVA_ALTERNATIVE_PRIORITY\n<\/pre>\n
Then, we export the alternatives:<\/p>\n
\/usr\/sbin\/update-alternatives --auto java\n\/usr\/sbin\/update-alternatives --auto javadoc\n\/usr\/sbin\/update-alternatives --auto appletviewer\n\/usr\/sbin\/update-alternatives --auto javah\n\/usr\/sbin\/update-alternatives --auto javac\n\/usr\/sbin\/update-alternatives --auto jar<\/pre>\n
To confirm that our installation is successful:<\/p>\n
java -version<\/pre>\n
Should give us output like this:<\/p>\n
[root@yourMachine]# java -version\njava version \"1.6.0_21\"\nJava(TM) SE Runtime Environment (build 1.6.0_21-b02)\nJava HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)\n<\/pre>\n
ServerPronto<\/a> offers the best affordable and secure hosting service in all dedicated server packages.<\/p>\n
Further information:
\nhttp:\/\/www.techsupportalert.com\/content\/32-bit-and-64-bit-explained.htm<\/a><\/p>\n
http:\/\/wporta.wordpress.com\/2010\/07\/06\/installing-jdk-in-fedora-13\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
This support solution is on installing a 32-bit app on an x64 system. Stated on the example of Java Development Kit installed on Fedora x64 bit. Three layers are essential when it comes to 32\/64bit compatibility: – Processor – Operating System – Application A 32 bit OS will run on a 32 or 64-bit processor,<\/p>\n","protected":false},"author":2,"featured_media":3064,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64],"tags":[123,17,112,22,18],"class_list":["post-351","post","type-post","status-publish","format-standard","has-post-thumbnail","category-support-of-the-day","tag-cloud","tag-dedicated-server","tag-hosting","tag-server","tag-web-hosting"],"_links":{"self":[{"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/posts\/351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/comments?post=351"}],"version-history":[{"count":19,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/posts\/351\/revisions"}],"predecessor-version":[{"id":3065,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/posts\/351\/revisions\/3065"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/media\/3064"}],"wp:attachment":[{"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/media?parent=351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/categories?post=351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.serverpronto.com\/spu\/wp-json\/wp\/v2\/tags?post=351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}