There is ESB deployer in JBoss SOA-P platform. When ESB application is deployed, libraries from directory esb.deployer/lib should be available for application.
Problem occurs when VFS Cache expires and therefore classes are not loaded for one SOA-P component. It is specifically Camel component. Timeout is in default set to 30 minutes (could be changed). After 30 minutes the ESB application is deployed, but when application tries to use library from esb.deployer/lib directory, it fails. If it's needed to use library at deployment time, it will fail too.
This problem is tracked in
SOA-2743 and then continues in bugzilla. There are also attached logs and reproducer for this problem.