Memory leaks

IBM® App Connect Enterprise is tested for memory leaks and the impact for application performance and stability is understood and respected. When a DataFlowEngine (DFE) is started and runtime processing begins, the DFE process can appear to continually take more memory for some time. However, after some period of continuous running with a representative or mixed workload, DFE memory usage should no longer continue to increase. When such observations are made, customers need to account for the characteristics of their workload; for example, occasionally larger messages.

Memory leaks sometimes do occur during exception handling. Do not write applications to rely on exception handling as the usual means to complete a process. Exceptions need to be an exception and not the rule.

If observations indicate that memory usage is continuing to grow and never stabilize, do the following things:

Check whether your message flows or the DFE itself is encountering any kind of regular exception.
Confirm that the workload that is being processed is an expected workload. For example, confirm that the workload is not just a set of progressively large messages that are being tested.