Standalone workflow is not supported in 11g database unless you are using OWB.
WorkflowFAQ.com - the ONLY independent resource for Oracle Workflow development
Alpha review chapters from my book "Developing With Oracle Workflow" are available via my website http://www.workflowfaq.com
Have you read the blog at http://www.workflowfaq.com/blog ?
WorkflowFAQ support forum: http://forum.workflowfaq.com