On 2012-12-20 11:53, Andrew Myers wrote:
Thanks Richard for your advice. This seems to have worked.
Also note that some programs (esp. system-bundled ones in Sun Solaris) can rely on particular definition of JAVA_HOME env.var pointing to a directory. Valid definition for the standard directory structure is JAVA_HOME=/usr/java which you update by updating the /usr/jdk/latest symlink.
Keep track of JVM customizations you might put in place, to redo them upon upgrades (tzupdate, private CA certificates, etc.) However, as with any software, some versions are better compatible than others due to some intimacy between JVM and compiled programs, so certain programs might require older JVM to stay around in the path they expect to use (or reconfigure their path from default to particular for such programs). Finally, to help me install JDK from tarballs/selfextractors I have packaged the Sun-standard dirs and symlinks to precreate the needed structure. I attach a SVR4 for Solaris and a RPM for RHEL/CentOS. In particular, this sticks needed symlinks to current installation into /usr/bin. Feel free to use or integrate anyplace :) A typical installation procedure looks like this: :; gzcat $DOWNLOAD_DIR/COSjavadirs-1.6.0-1.pkg.gz > /tmp/x :; pkgadd -d /tmp/x :; cd /usr/jdk/instances :; $DOWNLOAD_DIR/jdk-6u37-solaris-i586.sh :; $DOWNLOAD_DIR/jdk-6u37-solaris-x64.sh :; rm -f jdk1.6.0 && ln -s `ls -1d jdk1.6.0_* | tail -1` jdk1.6.0 (likewise for jdk1.7.*) In this structure, /usr/jdk/instances/jdk1.6.0 points to the latest jdk1.6.0_* installation, and /usr/jdk/latest statically points to ./instances/jdk1.6.0 (in our conservative case), and /usr/java points to ./jdk/latest, and /usr/bin/java and an horde of other programs point to ../java/bin/java etc. HTH, //Jim Klimov
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