Issue: When you modify a large mapping table that has approximately 8000 entries by using iManager plug-ins for Identity Manager, iManager reports a Java exception in the catalina.out file and logs you out of the application.
This issue is not reported in Designer.
Workaround: Remove the post request size and parameter limit from Tomcat’s server.xml file.
Navigate to the server.xml file. For example, /var/opt/novell/tomcat8/conf or C:\Program Files\Novell\Tomcat\conf\.
Add the following attributes under the <Connector> entry in the file.
maxParameterCount="-1" maxPostSize="-1"
Restart the iManager service.