Who can tell me the details about "JMSJVMOPTS" environment variable of JMSC API

Question

          I have a question about JMS C API.
          When in windows service application, JMSContectCreate return JMS_JVM_ERROR error.
          But in desktop app, it does well.
          I think I may need set the JMSJVMOPTS environment variable.
          But how to set JMSJVMOPTS ?
          

Answer 1

OK,
          The JMSJVMOPTS are extra options passed to the "java" executable itself
          along with
          "-Djava.class.path=${CLASSPATH}"
          Hence, the actual things you can set with this depend on which java compiler
          you are using. If you are using the Sun JVM for instance, here are some of
          the options you can set (from java -?)
          where options include:
          -client to select the "client" VM
          -server to select the "server" VM
          -hotspot is a synonym for the "client" VM [deprecated]
          The default VM is client.
          -cp -classpath <directories and zip/jar files separated by ;>
          set search path for application classes and resources
          -D<name>=<value>
          set a system property
          -verbose[:class|gc|jni]
          enable verbose output
          -version print product version and exit
          -showversion print product version and continue
          -? -help print this help message
          -X print help on non-standard options
          -ea[:<packagename>...|:<classname>]
          -enableassertions[:<packagename>...|:<classname>]
          enable assertions
          -da[:<packagename>...|:<classname>]
          -disableassertions[:<packagename>...|:<classname>]
          disable assertions
          -esa | -enablesystemassertions
          enable system assertions
          -dsa | -disablesystemassertions
          disable system assertions
          As far as what sort of things can cause a JMS_JVM_ERROR from
          JmsContextCreate the answer is that there are many, many reasons this might
          be happening. Please look for a file named ULOG.<mmddyy> (where mmddyy is
          month/day/year - for example ULOG.081403) somewhere on your system (I am not
          sure where this file would go being run from a W2K service). That "userlog"
          file should contain more information about why the failure occurred.
          Also, you can set JMSDEBUG=y in your environment which will print to stdout
          (again, not sure where stdout goes in a system service) stack traces and
          other debugging information into the ULOG file.
          Hope this helps...
          "Luke" <[email protected]> wrote in message
          news:[email protected]...
          >
          > Hi,John Wells,
          > thanks for your help.
          > But what I really don't know is what value I can set for JMSJVMOPTS.
          > There is not document about the detail of optional values for JMSJVMOPTS.
          > And what reasons can result a JMS_JVM_ERROR in JmsContextCreate() ?