BIP 11.1.1.7.1: java.lang.OutOfMemoryError: Java heap space

Hello,

When creating a data model for a large query (300+ columns), when Viewing Data, I got an error: "XML Parsing Error: mismatched tag...."

When I looked at the Engine Log, I saw "Java heap space". Next I looked at the bipublisher.log and in there I saw following message:

[2014-01-14T14:35:12.704-06:00] [bi_server1] [WARNING] [] [oracle.xdo] [tid: 28] [userId: <anonymous>] [ecid: 11d1def534ea1be0:5ac9a830:143796d727c:-8000-0000000000023ad5,0] [APP: bipublisher#11.1.1] java.lang.OutOfMemoryError: Java heap space[[

From this point on, most reports give an error.

What can I do about this (apart from restarting OBIEE)? This BIP is part of OBIEE 11.1.1.7.1 running on Linux.