If you are using JavaScript
calling web services on SharePoint site, you might see web pages as “Loading…” without
the results. The following site has three ContentQuery webpart and all
displayed as “Loading…”.
The quick way to debug this
is to use Chrome and click More Tools -> Developer Tools. Click console and
you might be able to find out the “500” exception as below.
Another quick way to what
exactly is the issue, you could call the web service like http://spsbx08/sites/DocCenter/_vti_bin/client.svc
in this case to see the real error.
“Memory gates
checking failed because the free memory (214859776 bytes) is less than 5% of
total memory. As a result, the service will not be available for incoming
requests. To resolve this, either reduce the load on the machine or adjust the
value of minFreeMemoryPercentageToActivateService on the
serviceHostingEnvironment config element.”
In this case, the
issue is the search services are taking too much memory on the server. We could
restrict the service not to take too much memory or bounce the server as short
term solution.