A

Anonymous

Question

Showing error information?

Forum|Forum|15 years ago
August 19, 2010
2 replies
842 views

I have a problem finding the cause of an error, the hosting company has disabled cfdump & the 'robust error reporting' so that when I get this error:

The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or some system code.

Null Pointers are another name for undefined values.

I have no idea where or why it is happening [actually I do know it seems to be session related]

is there any other troubleshooting method or tag or something I can use to show the extended error information? [i.e. the session/application/form/cgi values etc]

-thanks

-sean

This topic has been closed for replies.

M

mack_

Participating Frequently

You can also copy the dump.cfm file from a local instalation of

ColdFusion to the remote server (search for dump.cfm in your CF

directory, it should be in a directory called cftags).

--

Mack

ilssac

Inspiring

Without Robust and <cfdump...> you have two choices off the top of my head.

ONE

Ask the hosting company for the relevant log entries for the ColdFusion Application and|or Exception log files. Depending on how good or bad a hosting company they are, they should be able to provide this for you. But one that disables <cfdump....> about as innocuous of tag as it is useful is rather disturbing.

TWO role you own <cfdump...> anlog.

It is not that hard with the <cfloop....> tag.

Between

<cfoutput>#structVar[key]#</cfoutput>

</cfloop>

AND

<cfoutput>#arrayVar[ind]#</cfoutput>

You should be able to output any variable you care to with some work. You could either put a <cftry><cfcatch> block around suspected code and use the above output techniques on the #cfcatch# structure. OR put a onError() Method in an Applicaiton.cfc file and output the argument structure it provides when it handles expceptions.

OR

You may want to find a hosting provider that understands ColdFusion and allows one to work properly with it.

Upen1

Inspiring

@ilssac

Hi ..

I am getting the same error during the simple querying data base.It was not showing the error when I was running the application in my local environment.

But when I deployed it at client site it shows the following error

"The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or some system code.Null Pointers are another name for undefined values."

By the way I have used the every DB call inside the function and when this error is occuring I am getting the cfcatch.message as null string but for other types of error it is getting the error string as the cfcatch.message value.So I checked the condition inside the catch block and making again function call to the same function when the condition is satisfied.

My code from where I was getting error is:

<cfquery name="qry_testDB" datasource="testDSN">
SELECT * FROM myTables WHERE pkID = 1;
</cfquery>
<cfdump var="#qry_testDB#">

So if you have any other better solution please suggest me .

NOTE: I am using My Sql 5.0 data base.

A

Anonymous

using cf9?

I got around this by disabling " Maintain connections across client requests." in the datasource setup.... apparently it's a well known-little-documented bug.... I had the same issue, worked here - didn't work there....

-sean

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