We have already worked with support team(for dynatrace 6.2 version) and came to know that siteminder is not supported by dynatrace java agents. We faced the following two issues after installing dynatrace java agents on those policy servers.
1. Application took long time to start after the installation.
2. Sometimes, agent took long time to come up in console.
3. Though agent was reporting to console, we were not able to see purepath details etc..
Could you please let us know whether there is any way to implement this in dynatrace 6.5 version?