Preventing an out-of-memory error during XDE import

When you import a large model, or when you import a large set of models, you may encounter an out-of-memory error during the XDE model import process. You can take some steps to reduce your chances of encountering this memory error.

Whether you encounter an out-of-memory error depends on many factors, including, but not limited to, the size of your XDE model and how much RAM your machine contains. If your XDE model is collectively greater than 200 MB (including all referenced models and subunits), there is a higher risk of encountering an out-of-memory error during the import process even if your machine has a 2 GHz processor and a sufficient amount of memory.

There are two levels of error severity related to memory consumption that may occur during the XDE import process. When the Rational® XDE Model Import wizard detects that available memory is running low, the wizard automatically stops migrating diagrams, even though the model continues to migrate model elements. When this situation happens, an incident is logged in the XDE import report. The more severe error occurs when all memory available to the process is completely exhausted. In this case, the import process stops and an internal error window opens, explaining that an out-of-memory error has occurred.
Important: Before you attempt any of the steps below, you should temporarily reduce the memory used by other parts of the Rational UML modeling products by closing all editors and unnecessary projects. Then, restart the Rational modeling product and try to import your XDE model.
Related concepts
XDE model migration
Rational XDE model upgrade process
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