CF11-setup error page for database not available

[#1]

we are using ColdFusion 11 enterprise , every evening our database backup team taking database offline for baclup, unfortunatly some user are trying to access same database, we wanted to setup error page on that datasource availability, need help 

[#2]

we are using ColdFusion 11 enterprise , every evening our database backup team taking database offline for baclup, unfortunatly some user are trying to access same database, we wanted to setup error page on that datasource availability, need help 

[#3]

A possible solution:

1) Make sure your Application.cfc file implements the onError eventhandler.

2) Include code in the onError handler to check whether datasources are available. For example, to check whether a datasource, myDSN, is available, you could do something like 

<cffunction name="onError">
<cfargument name="Exception" required=true >
<cfargument name = "EventName" type="String" required=true >

	<!--- Login into Coldfusion Administrator. --->
	<cfset  createObject("component","cfide.adminapi.administrator").login("my_CFAdmin_password")>
	
	<!--- Instantiate the data source object. --->
	<cfset  var datasourceObject = createObject("component","cfide.adminapi.datasource")>
	 
	<!--- Get a structure containing all the data sources --->
	<cfset var datasources = datasourceObject.getDatasources()>
	 
	<cfif structCount(datasources) eq 0 or not structKeyExists(datasources, 'myDSN')>
		Sorry, the data source in unavailable.
	</cfif>

</cffunction>