The session failover configuration script (amsfoconfig) fails on Linux 2.1 server because the tab character (\t) is not being interpreted correctly.
Workaround: Configure session failover manually. For the steps, see Configuring Session Failover Manually in Sun Java System Access Manager 7 2005Q4 Deployment Planning Guide.
This problem is fixed in patch 1. See Access Manager 7 2005Q4 Patch 1 for information about applying the patch for your specific platform.