DbAssistant Problems & Java Problems in General

Like many people in this situation, I have struggled with
installing 8.1.5. The biggest problem was that dbAssist
appeared to not install correctly (it actually installed, but
could not launch). The error is a java class exception "Could
not find java.lang.Thread."
The problem lies in that Oracle is not loading the JVM using
environment variables PATH and CLASSPATH (which is the JAVA
way). Instead they have hard-coded paths to specific classes.
Oracle products are looking for java.lang.Thread in the rt.jar
file which may or may not exist (depending on whether you have
the JDK or the JRE). Instead you may have classes.zip which
also has the java.lang.Thread class.
The fix that worked for me is simply to link rt.jar to
classes.zip.
$ cd /usr/local/jre/lib
$ ln -s classes.zip rt.jar
So far this seems to work well (in light of the total install
experience).
null

That's because you are using the JDK (which uses classes.zip),
instead of the JRE (which uses rt.jar) as mentioned in the docs.
David Rasmussen (guest) wrote:
: Like many people in this situation, I have struggled with
: installing 8.1.5. The biggest problem was that dbAssist
: appeared to not install correctly (it actually installed, but
: could not launch). The error is a java class exception "Could
: not find java.lang.Thread."
: The problem lies in that Oracle is not loading the JVM using
: environment variables PATH and CLASSPATH (which is the JAVA
: way). Instead they have hard-coded paths to specific classes.
: Oracle products are looking for java.lang.Thread in the rt.jar
: file which may or may not exist (depending on whether you have
: the JDK or the JRE). Instead you may have classes.zip which
: also has the java.lang.Thread class.
: The fix that worked for me is simply to link rt.jar to
: classes.zip.
: $ cd /usr/local/jre/lib
: $ ln -s classes.zip rt.jar
: So far this seems to work well (in light of the total install
: experience).
null

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