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Default Java Heap Size Might Be Insufficient

By default, the JVM Java heap size is set to 256 MB. This size is insufficient to explore a directory with 250,000 accounts.

The JVM heap size should be 512 MB.

If you need to increase the Java heap size, use the instructions for editing the JVM memory options in the JCS Implementation Guide.

More information:

Edit JVM Memory Options on Windows

Edit JVM Memory Options on UNIX