Wlappc ANT task "runtimeFlags" attribute doesn't take effect

Question

I am intermittently counter "java.lang.OutOfMemoryError" error while I am running wlappc ANT task to compile jsp pages. I have lots of jsp files (about 500). According to weblogic's document, I set runtimeFlags="-J-ms512m -J-mx1024m". So my ant task looks like this:
          <wlappc source="${websrc}" output="${output}" runtimeFlags="-J-ms1024m -J-mx1024m">
          </wlappc>
          But it doesn't work. It still complains out of memory error. I tried various approach including "-J-Xms1024m -J-Xmx1024m". But not helpful at all.
          So I gave up and ended up using weblogic.appc class to build my jsp pages. So I have fully control of jvm options. I set up -Xms1024m -Xmx1024m as JVM parameters and works well.
          It looks to me that wlappc ANT task ignore runtimeFlags at all. It doesn't take any effect.
          Is it a known bug? anyone succeeded solving OutOfMemoryError by setting runtimeFlags attribute of wlappc ANT task?

Answer 1

I was having the same issue.
          Try using the maxmemory argument for the standard java ant task and calling weblogic.appc:
          <java classname="weblogic.appc" fork="yes" failonerror="true" maxmemory="256m">
          <classpath>
          <fileset dir="${weblogic.home}/server/lib" includes="weblogic.jar,webservices.jar" />
          </classpath>
          <arg value="${ear.dir}" />
          <arg value="-verbose" />
          </java>