Contenu d'une page Web limité en taille : Erreur Oracle "ORA-01401: inserted value too large for column"

Lors de la modification du contenu d'une "Web Page", au delà d'un certain nombre de caractères (environ 1200 caractères), une erreur se produit à la validation :
Context

Request Attributes:

nuxeo.disable.redirect.wrapper : true
com.sun.faces.util.RequestStateManager :

{com.sun.faces.renderKitImplForRequest=org.ajax4jsf.renderkit.ChameleonRenderKitFactory@408e80, com.sun.faces.ComponentForValue=org.nuxeo.ecm.platform.ui.web.component.date.UIInputDateTime@17ae714, com.sun.faces.INVOCATION_PATH=.faces, com.sun.faces.ExternalContextImpl=com.sun.faces.context.ExternalContextImpl@1d8f3a1}

org.jboss.seam.core.conversationPropagation : org.jboss.seam.core.ConversationPropagation@630657
org.jboss.seam.core.conversationContext : ConversationContext(0NXMAIN2)
deleteActions : org.nuxeo.ecm.webapp.action.DeleteActionsBean@1357365
org.richfaces.component.DecodesPhaseNotifiyingListener:_AFTER_DECODE_PHASE : true
org.jboss.seam.core.eventContext : BasicContext(EVENT)
org.jboss.seam.core.manager : Manager([0NXMAIN2])
org.ajax4jsf.application.AjaxStateManager.AJAX_VIEW_SEQUENCE : j_id26
stackTrace : javax.servlet.ServletException: javax.servlet.ServletException: #

{documentActions.updateDocument}

: org.nuxeo.ecm.core.api.RollbackClientException: org.nuxeo.ecm.core.api.WrappedException: Exception: org.nuxeo.ecm.core.api.ClientException. message: Failed to save session
at org.nuxeo.ecm.platform.ui.web.rest.FancyURLFilter.doFilter(FancyURLFilter.java:131)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:482)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoRequestControllerFilter.doFilter(NuxeoRequestControllerFilter.java:135)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)