Upgrade to Apache Ant 1.9.9 causes invocations of the installapp Ant target to fail
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If you upgrade to Apache Ant 1.9.9, invocations of the installapp Ant target can fail if the wsadmin.extra.args property is passed from the command line.
Invocations of the installapp Ant target can fail if you pass a value that is enclosed in quotes for the wsadmin.extra.args property as an argument from the command line, as shown in the following example:
-Dwsadmin.extra.args=\"-javaoption -Xmx1024m -appendtrace true\"
Resolving The Problem
If the issue occurs, you can specify some WebSphere wsadmin options either through the wsadmin.properties file, or by modifying the wsadmin.sh script.