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cfrethrow
Last update:
May 18, 2026
Description
Rethrows the currently active exception. Preserves the exception's cfcatch.type and cfcatch.tagContext variable values.
Category
Syntax
<cfrethrow>See also
cferror, cfthrow, cftry; Handling runtime exceptions with ColdFusion tags in the Developing ColdFusion Applications
Usage
Use this tag within a cfcatch block. This tag is useful in error handling code, if the error handler cannot handle an error that it catches. For example, if cfcatch type = "any" gets a DATABASE exception, and the code is designed to handle only CFX exceptions, the handler raises the exceptions again, with details intact, so that a higher-level handler can process the error information. If you used the cfthrow tag, the type and details of the original exception would be lost.
Example
<h3>cfrethrow Example</h3>
<!--- Rethrow a DATABASE exception. --->
<cftry>
<cftry>
<cfquery name = "GetMessages" dataSource = "cfdocexamples">
SELECT*
FROM Messages
</cfquery>
<cfcatch type = "DATABASE">
<!--- If database signalled a 50555 error, ignore; otherwise, rethrow
exception. --->
<cfif cfcatch.sqlstate neq 50555>
<cfrethrow>
</cfif>
</cfcatch>
</cftry>
<cfcatch>
<h3>Sorry, this request can't be completed</h3>
<h4>Catch variables</h4>
<cfoutput>
<cfloop collection = #cfcatch# item = "c">
<br>
<cfif IsSimpleValue(cfcatch[c])>#c# = #cfcatch[c]#
</cfif>
</cfloop>
</cfoutput>
</cfcatch>
</cftry>
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