IBM User Guide for Java V7 on Windows > Performance > Class data sharing between JVMs > Considerations and limitations of using class data sharing

Cache size limits

The maximum theoretical cache size is 2 GB. The size of the cache you can specify is limited by the amount of available disk space and available virtual address space.

The cache is limited by the following factors:

• Available disk space. A file is created to store the class data in a directory called javasharedresources. This directory is created in the user's profile directory, which is typically C:\Documents and Settings\<username>\Local Settings\Application Data\javasharedresources\. The shared file is deleted every time Windows is restarted.
• Available virtual address space. Because the virtual address space of a process is shared between the shared classes cache and the Java™ heap, increasing the maximum size of the Java heap reduces the size of the shared classes cache you can create.

Parent: Considerations and limitations of using class data sharing

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