Request header too large Exception

Request header too large Exception
G.Morreale

In a production system, in calling a webservice I encounter this problem:

..WEB0777: Unblocking keep-alive exception
java.lang.IllegalStateException: PWC4662: Request header is too large
at org.apache.coyote.http11.InternalInputBuffer.fill(InternalInputBuffer.java:740)
at org.apache.coyote.http11.InternalInputBuffer.parseHeader(InternalInputBuffer.java:657)
at org.apache.coyote.http11.InternalInputBuffer.parseHeaders(InternalInputBuffer.java:543)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.parseRequest(DefaultProcessorTask.java:712)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:577)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(PortUnificationPipeline.java:380)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
|#]

I solve it, by using maxPostSize property.

In order to setup this value open admin console, go to Configuration->Http Service->Http Listener and add the property

maxPostSize.

The default value is 4096, so increment it until the exception doesn't appear anymore.