Community Tip - You can change your system assigned username to something more personal in your community settings. X
Try setting wt.pom.queryLimit=-1 (this is the default so it might already be set this way)
com.ptc.windchill.search.queryLimit=-1 (default is 5000)
But be careful as -1 means no limit.
If you don't want no limit just bump them up to an acceptable limit.
