Oracle ATG Web Commerce Search requires a certain amount of virtual memory (also known as swap space) in order to carry out indexing tasks. If Search does not have sufficient memory, you may see the following error:

java.io.IOException: Not enough space

You can estimate the required amount using the following formula:

<memory reserved by application server> + (<memory
reserved by search engine> * <number of search engines>)

The amount reserved by the search engine is controlled by the MemoryReserveSize setting in the AEConfig.xml file located in <ATG10dir>/Search10.2/SearchEngine/platform/bin.

For most Search installations on JBoss, 2 GB minimum free is required. If your index is very large, you may require more.